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linux/drivers/clk/renesas/r9a06g032-clocks.c

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clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
// SPDX-License-Identifier: GPL-2.0
/*
clk: renesas: r9a06g032: Fix some typo in comments This file seems to be for R9A06G032 only. So replace reference to R9A09G032 by R9A06G032 to avoid confusion. AFAIK, R9A09G032 does'nt exist. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/20200413041709.3630-1-christophe.jaillet@wanadoo.fr Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-04-13 04:17:09 +00:00
* R9A06G032 clock driver
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
*
* Copyright (C) 2018 Renesas Electronics Europe Limited
*
* Michel Pollet <michel.pollet@bp.renesas.com>, <buserror@gmail.com>
*/
#include <linux/clk.h>
#include <linux/clk-provider.h>
#include <linux/delay.h>
#include <linux/init.h>
clk: Remove io.h from clk-provider.h Now that we've gotten rid of clk_readl() we can remove io.h from the clk-provider header and push out the io.h include to any code that isn't already including the io.h header but using things like readl/writel, etc. Found with this grep: git grep -l clk-provider.h | grep '.c$' | xargs git grep -L 'linux/io.h' | \ xargs git grep -l \ -e '\<__iowrite32_copy\>' --or \ -e '\<__ioread32_copy\>' --or \ -e '\<__iowrite64_copy\>' --or \ -e '\<ioremap_page_range\>' --or \ -e '\<ioremap_huge_init\>' --or \ -e '\<arch_ioremap_pud_supported\>' --or \ -e '\<arch_ioremap_pmd_supported\>' --or \ -e '\<devm_ioport_map\>' --or \ -e '\<devm_ioport_unmap\>' --or \ -e '\<IOMEM_ERR_PTR\>' --or \ -e '\<devm_ioremap\>' --or \ -e '\<devm_ioremap_nocache\>' --or \ -e '\<devm_ioremap_wc\>' --or \ -e '\<devm_iounmap\>' --or \ -e '\<devm_ioremap_release\>' --or \ -e '\<devm_memremap\>' --or \ -e '\<devm_memunmap\>' --or \ -e '\<__devm_memremap_pages\>' --or \ -e '\<pci_remap_cfgspace\>' --or \ -e '\<arch_has_dev_port\>' --or \ -e '\<arch_phys_wc_add\>' --or \ -e '\<arch_phys_wc_del\>' --or \ -e '\<memremap\>' --or \ -e '\<memunmap\>' --or \ -e '\<arch_io_reserve_memtype_wc\>' --or \ -e '\<arch_io_free_memtype_wc\>' --or \ -e '\<__io_aw\>' --or \ -e '\<__io_pbw\>' --or \ -e '\<__io_paw\>' --or \ -e '\<__io_pbr\>' --or \ -e '\<__io_par\>' --or \ -e '\<__raw_readb\>' --or \ -e '\<__raw_readw\>' --or \ -e '\<__raw_readl\>' --or \ -e '\<__raw_readq\>' --or \ -e '\<__raw_writeb\>' --or \ -e '\<__raw_writew\>' --or \ -e '\<__raw_writel\>' --or \ -e '\<__raw_writeq\>' --or \ -e '\<readb\>' --or \ -e '\<readw\>' --or \ -e '\<readl\>' --or \ -e '\<readq\>' --or \ -e '\<writeb\>' --or \ -e '\<writew\>' --or \ -e '\<writel\>' --or \ -e '\<writeq\>' --or \ -e '\<readb_relaxed\>' --or \ -e '\<readw_relaxed\>' --or \ -e '\<readl_relaxed\>' --or \ -e '\<readq_relaxed\>' --or \ -e '\<writeb_relaxed\>' --or \ -e '\<writew_relaxed\>' --or \ -e '\<writel_relaxed\>' --or \ -e '\<writeq_relaxed\>' --or \ -e '\<readsb\>' --or \ -e '\<readsw\>' --or \ -e '\<readsl\>' --or \ -e '\<readsq\>' --or \ -e '\<writesb\>' --or \ -e '\<writesw\>' --or \ -e '\<writesl\>' --or \ -e '\<writesq\>' --or \ -e '\<inb\>' --or \ -e '\<inw\>' --or \ -e '\<inl\>' --or \ -e '\<outb\>' --or \ -e '\<outw\>' --or \ -e '\<outl\>' --or \ -e '\<inb_p\>' --or \ -e '\<inw_p\>' --or \ -e '\<inl_p\>' --or \ -e '\<outb_p\>' --or \ -e '\<outw_p\>' --or \ -e '\<outl_p\>' --or \ -e '\<insb\>' --or \ -e '\<insw\>' --or \ -e '\<insl\>' --or \ -e '\<outsb\>' --or \ -e '\<outsw\>' --or \ -e '\<outsl\>' --or \ -e '\<insb_p\>' --or \ -e '\<insw_p\>' --or \ -e '\<insl_p\>' --or \ -e '\<outsb_p\>' --or \ -e '\<outsw_p\>' --or \ -e '\<outsl_p\>' --or \ -e '\<ioread8\>' --or \ -e '\<ioread16\>' --or \ -e '\<ioread32\>' --or \ -e '\<ioread64\>' --or \ -e '\<iowrite8\>' --or \ -e '\<iowrite16\>' --or \ -e '\<iowrite32\>' --or \ -e '\<iowrite64\>' --or \ -e '\<ioread16be\>' --or \ -e '\<ioread32be\>' --or \ -e '\<ioread64be\>' --or \ -e '\<iowrite16be\>' --or \ -e '\<iowrite32be\>' --or \ -e '\<iowrite64be\>' --or \ -e '\<ioread8_rep\>' --or \ -e '\<ioread16_rep\>' --or \ -e '\<ioread32_rep\>' --or \ -e '\<ioread64_rep\>' --or \ -e '\<iowrite8_rep\>' --or \ -e '\<iowrite16_rep\>' --or \ -e '\<iowrite32_rep\>' --or \ -e '\<iowrite64_rep\>' --or \ -e '\<__io_virt\>' --or \ -e '\<pci_iounmap\>' --or \ -e '\<virt_to_phys\>' --or \ -e '\<phys_to_virt\>' --or \ -e '\<ioremap_uc\>' --or \ -e '\<ioremap\>' --or \ -e '\<__ioremap\>' --or \ -e '\<iounmap\>' --or \ -e '\<ioremap\>' --or \ -e '\<ioremap_nocache\>' --or \ -e '\<ioremap_uc\>' --or \ -e '\<ioremap_wc\>' --or \ -e '\<ioremap_wc\>' --or \ -e '\<ioremap_wt\>' --or \ -e '\<ioport_map\>' --or \ -e '\<ioport_unmap\>' --or \ -e '\<ioport_map\>' --or \ -e '\<ioport_unmap\>' --or \ -e '\<xlate_dev_kmem_ptr\>' --or \ -e '\<xlate_dev_mem_ptr\>' --or \ -e '\<unxlate_dev_mem_ptr\>' --or \ -e '\<virt_to_bus\>' --or \ -e '\<bus_to_virt\>' --or \ -e '\<memset_io\>' --or \ -e '\<memcpy_fromio\>' --or \ -e '\<memcpy_toio\>' I also reordered a couple includes when they weren't alphabetical and removed clk.h from kona, replacing it with clk-provider.h because that driver doesn't use clk consumer APIs. Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: Chen-Yu Tsai <wens@csie.org> Acked-by: Maxime Ripard <maxime.ripard@bootlin.com> Acked-by: Tero Kristo <t-kristo@ti.com> Acked-by: Sekhar Nori <nsekhar@ti.com> Cc: Krzysztof Kozlowski <krzk@kernel.org> Acked-by: Mark Brown <broonie@kernel.org> Cc: Chris Zankel <chris@zankel.net> Acked-by: Max Filippov <jcmvbkbc@gmail.com> Acked-by: John Crispin <john@phrozen.org> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2019-04-18 22:20:22 +00:00
#include <linux/io.h>
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
#include <linux/kernel.h>
#include <linux/math64.h>
#include <linux/of.h>
#include <linux/of_address.h>
clk: renesas: r9a06g032: Probe possible children The clock controller device on r9a06g032 takes all the memory range that is described as being a system controller. This range contains many different (unrelated?) registers besides the ones belonging to the clock controller, that can necessitate to be accessed from other peripherals. For instance, the dmamux registers are there. The dmamux "device" will be described as a child node of the clock/system controller node, which means we need the top device driver (the clock controller driver in this case) to populate its children manually. In case of error when populating the children, we do not fail the probe on purpose to keep the clk driver up and running. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220427095653.91804-7-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-04-27 09:56:50 +00:00
#include <linux/of_platform.h>
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
#include <linux/platform_device.h>
clk: renesas: r9a06g032: Add clock domain support There are several clocks on the r9a06g032 which are currently not enabled in their drivers that can be delegated to clock domain system for power management. Therefore add support for clock domain functionality to the r9a06g032 clock driver. Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-05-28 11:54:27 +00:00
#include <linux/pm_clock.h>
#include <linux/pm_domain.h>
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
#include <linux/slab.h>
clk: renesas: r9a06g032: Export function to set dmamux The dmamux register is located within the system controller. Without syscon, we need an extra helper in order to give write access to this register to a dmamux driver. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220427095653.91804-5-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-04-27 09:56:48 +00:00
#include <linux/soc/renesas/r9a06g032-sysctrl.h>
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
#include <linux/spinlock.h>
#include <dt-bindings/clock/r9a06g032-sysctrl.h>
soc: renesas: r9a06g032-sysctrl: Handle h2mode setting based on USBF presence The CFG_USB[H2MODE] allows to switch the USB configuration. The configuration supported are: - One host and one device or - Two hosts Set CFG_USB[H2MODE] based on the USBF controller (USB device) availability. Signed-off-by: Herve Codina <herve.codina@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230105152257.310642-3-herve.codina@bootlin.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-05 15:22:54 +00:00
#define R9A06G032_SYSCTRL_USB 0x00
#define R9A06G032_SYSCTRL_USB_H2MODE (1<<1)
clk: renesas: r9a06g032: Export function to set dmamux The dmamux register is located within the system controller. Without syscon, we need an extra helper in order to give write access to this register to a dmamux driver. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220427095653.91804-5-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-04-27 09:56:48 +00:00
#define R9A06G032_SYSCTRL_DMAMUX 0xA0
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
/**
* struct regbit - describe one bit in a register
* @reg: offset of register relative to base address,
* expressed in units of 32-bit words (not bytes),
* @bit: which bit (0 to 31) in the register
*
* This structure is used to compactly encode the location
* of a single bit in a register. Five bits are needed to
* encode the bit number. With uint16_t data type, this
* leaves 11 bits to encode a register offset up to 2047.
*
* Since registers are aligned on 32-bit boundaries, the
* offset will be specified in 32-bit words rather than bytes.
* This allows encoding an offset up to 0x1FFC (8188) bytes.
*
* Helper macro RB() takes care of converting the register
* offset from bytes to 32-bit words.
*/
struct regbit {
u16 bit:5;
u16 reg:11;
};
#define RB(_reg, _bit) ((struct regbit) { \
.reg = (_reg) / 4, \
.bit = (_bit) \
})
clk: renesas: r9a06g032: Document structs Add some kerneldoc comments for the structures. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-4-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:19 +00:00
/**
* struct r9a06g032_gate - clock-related control bits
* @gate: clock enable/disable
* @reset: clock module reset (active low)
* @ready: enables NoC forwarding of read/write requests to device,
* (eg. device is ready to handle read/write requests)
* @midle: request to idle the NoC interconnect
*
* Each of these fields describes a single bit in a register,
* which controls some aspect of clock gating. The @gate field
* is mandatory, this one enables/disables the clock. The
* other fields are optional, with zero indicating "not used".
*
* In most cases there is a @reset bit which needs to be
* de-asserted to bring the module out of reset.
*
* Modules may also need to signal when they are @ready to
* handle requests (read/writes) from the NoC interconnect.
*
* Similarly, the @midle bit is used to idle the master.
*/
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
struct r9a06g032_gate {
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
struct regbit gate, reset, ready, midle;
clk: renesas: r9a06g032: Drop unused fields Drop three unused fields from the clock descriptor structure, and update the macros for filling such structures accordingly. The values for such fields are kept in the source code, now unused, in case they are needed later. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-3-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:18 +00:00
/* Unused fields omitted to save space */
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
/* struct regbit scon, mirack, mistat */;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
};
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
enum gate_type {
K_GATE = 0, /* gate which enable/disable */
K_FFC, /* fixed factor clock */
K_DIV, /* divisor */
K_BITSEL, /* special for UARTs */
K_DUALGATE /* special for UARTs */
};
clk: renesas: r9a06g032: Document structs Add some kerneldoc comments for the structures. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-4-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:19 +00:00
/**
* struct r9a06g032_clkdesc - describe a single clock
* @name: string describing this clock
* @managed: boolean indicating if this clock should be
* started/stopped as part of power management
* @type: see enum @gate_type
* @index: the ID of this clock element
* @source: the ID+1 of the parent clock element.
* Root clock uses ID of ~0 (PARENT_ID);
* @gate: clock enable/disable
* @div_min: smallest permitted clock divider
* @div_max: largest permitted clock divider
* @reg: clock divider register offset, in 32-bit words
* @div_table: optional list of fixed clock divider values;
* must be in ascending order, zero for unused
* @div: divisor for fixed-factor clock
* @mul: multiplier for fixed-factor clock
* @group: UART group, 0=UART0/1/2, 1=UART3/4/5/6/7
* @sel: select either g1/r1 or g2/r2 as clock source
* @g1: 1st source gate (clock enable/disable)
* @r1: 1st source reset (module reset)
* @g2: 2nd source gate (clock enable/disable)
* @r2: 2nd source reset (module reset)
*
* Describes a single element in the clock tree hierarchy.
* As there are quite a large number of clock elements, this
* structure is packed tightly to conserve space.
*/
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
struct r9a06g032_clkdesc {
const char *name;
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
uint32_t managed:1;
enum gate_type type:3;
uint32_t index:8;
uint32_t source:8; /* source index + 1 (0 == none) */
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
union {
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
/* type = K_GATE */
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
struct r9a06g032_gate gate;
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
/* type = K_DIV */
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
struct {
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
unsigned int div_min:10, div_max:10, reg:10;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
u16 div_table[4];
};
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
/* type = K_FFC */
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
struct {
u16 div, mul;
};
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
/* type = K_DUALGATE */
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
struct {
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
uint16_t group:1;
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
struct regbit sel, g1, r1, g2, r2;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
} dual;
};
clk: renesas: r9a06g032: Drop __packed for portability The R9A06G032 clock driver uses an array of packed structures to reduce kernel size. However, this array contains pointers, which are no longer aligned naturally, and cannot be relocated on PPC64. Hence when compile-testing this driver on PPC64 with CONFIG_RELOCATABLE=y (e.g. PowerPC allyesconfig), the following warnings are produced: WARNING: 136 bad relocations c000000000616be3 R_PPC64_UADDR64 .rodata+0x00000000000cf338 c000000000616bfe R_PPC64_UADDR64 .rodata+0x00000000000cf370 ... Fix this by dropping the __packed attribute from the r9a06g032_clkdesc definition, trading a small size increase for portability. This increases the 156-entry clock table by 1 byte per entry, but due to the compiler generating more efficient code for unpacked accesses, the net size increase is only 76 bytes (gcc 9.3.0 on arm32). Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Fixes: 4c3d88526eba2143 ("clk: renesas: Renesas R9A06G032 clock driver") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20201130085743.1656317-1-geert+renesas@glider.be Tested-by: Stephen Rothwell <sfr@canb.auug.org.au> # PowerPC allyesconfig build Acked-by: Stephen Boyd <sboyd@kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-11-30 08:57:43 +00:00
};
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
clk: renesas: r9a06g032: Drop unused fields Drop three unused fields from the clock descriptor structure, and update the macros for filling such structures accordingly. The values for such fields are kept in the source code, now unused, in case they are needed later. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-3-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:18 +00:00
/*
* The last three arguments are not currently used,
* but are kept in the r9a06g032_clocks table below.
*/
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
#define I_GATE(_clk, _rst, _rdy, _midle, _scon, _mirack, _mistat) { \
.gate = _clk, \
.reset = _rst, \
.ready = _rdy, \
.midle = _midle, \
clk: renesas: r9a06g032: Drop unused fields Drop three unused fields from the clock descriptor structure, and update the macros for filling such structures accordingly. The values for such fields are kept in the source code, now unused, in case they are needed later. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-3-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:18 +00:00
/* .scon = _scon, */ \
/* .mirack = _mirack, */ \
/* .mistat = _mistat */ \
clk: renesas: r9a06g032: Improve readability Several small readability improvements: - Move enum gate_type definition up and add comments to each field. - Use this enum instead of generic uint32_t type in clock desc struct. - Tidy up bitfield syntax and comments in clock desc structure - Reformat macros for building clock desc to have one assignment per line There is no functional change. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-2-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:17 +00:00
}
#define D_GATE(_idx, _n, _src, ...) { \
.type = K_GATE, \
.index = R9A06G032_##_idx, \
.source = 1 + R9A06G032_##_src, \
.name = _n, \
.gate = I_GATE(__VA_ARGS__) \
}
#define D_MODULE(_idx, _n, _src, ...) { \
.type = K_GATE, \
.index = R9A06G032_##_idx, \
.source = 1 + R9A06G032_##_src, \
.name = _n, \
.managed = 1, \
.gate = I_GATE(__VA_ARGS__) \
}
#define D_ROOT(_idx, _n, _mul, _div) { \
.type = K_FFC, \
.index = R9A06G032_##_idx, \
.name = _n, \
.div = _div, \
.mul = _mul \
}
#define D_FFC(_idx, _n, _src, _div) { \
.type = K_FFC, \
.index = R9A06G032_##_idx, \
.source = 1 + R9A06G032_##_src, \
.name = _n, \
.div = _div, \
.mul = 1 \
}
#define D_DIV(_idx, _n, _src, _reg, _min, _max, ...) { \
.type = K_DIV, \
.index = R9A06G032_##_idx, \
.source = 1 + R9A06G032_##_src, \
.name = _n, \
.reg = _reg, \
.div_min = _min, \
.div_max = _max, \
.div_table = { __VA_ARGS__ } \
}
#define D_UGATE(_idx, _n, _src, _g, _g1, _r1, _g2, _r2) { \
.type = K_DUALGATE, \
.index = R9A06G032_##_idx, \
.source = 1 + R9A06G032_##_src, \
.name = _n, \
.dual = { \
.group = _g, \
.g1 = _g1, \
.r1 = _r1, \
.g2 = _g2, \
.r2 = _r2 \
}, \
}
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
/* Internal clock IDs */
#define R9A06G032_CLKOUT 0
#define R9A06G032_CLKOUT_D10 2
#define R9A06G032_CLKOUT_D16 3
#define R9A06G032_CLKOUT_D160 4
#define R9A06G032_CLKOUT_D1OR2 5
#define R9A06G032_CLKOUT_D20 6
#define R9A06G032_CLKOUT_D40 7
#define R9A06G032_CLKOUT_D5 8
#define R9A06G032_CLKOUT_D8 9
#define R9A06G032_DIV_ADC 10
#define R9A06G032_DIV_I2C 11
#define R9A06G032_DIV_NAND 12
#define R9A06G032_DIV_P1_PG 13
#define R9A06G032_DIV_P2_PG 14
#define R9A06G032_DIV_P3_PG 15
#define R9A06G032_DIV_P4_PG 16
#define R9A06G032_DIV_P5_PG 17
#define R9A06G032_DIV_P6_PG 18
#define R9A06G032_DIV_QSPI0 19
#define R9A06G032_DIV_QSPI1 20
#define R9A06G032_DIV_REF_SYNC 21
#define R9A06G032_DIV_SDIO0 22
#define R9A06G032_DIV_SDIO1 23
#define R9A06G032_DIV_SWITCH 24
#define R9A06G032_DIV_UART 25
#define R9A06G032_DIV_MOTOR 64
#define R9A06G032_CLK_DDRPHY_PLLCLK_D4 78
#define R9A06G032_CLK_ECAT100_D4 79
#define R9A06G032_CLK_HSR100_D2 80
#define R9A06G032_CLK_REF_SYNC_D4 81
#define R9A06G032_CLK_REF_SYNC_D8 82
#define R9A06G032_CLK_SERCOS100_D2 83
#define R9A06G032_DIV_CA7 84
#define R9A06G032_UART_GROUP_012 154
#define R9A06G032_UART_GROUP_34567 155
#define R9A06G032_CLOCK_COUNT (R9A06G032_UART_GROUP_34567 + 1)
clk: renesas: r9a06g032: Add clock domain support There are several clocks on the r9a06g032 which are currently not enabled in their drivers that can be delegated to clock domain system for power management. Therefore add support for clock domain functionality to the r9a06g032 clock driver. Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-05-28 11:54:27 +00:00
static const struct r9a06g032_clkdesc r9a06g032_clocks[] = {
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
D_ROOT(CLKOUT, "clkout", 25, 1),
D_ROOT(CLK_PLL_USB, "clk_pll_usb", 12, 10),
D_FFC(CLKOUT_D10, "clkout_d10", CLKOUT, 10),
D_FFC(CLKOUT_D16, "clkout_d16", CLKOUT, 16),
D_FFC(CLKOUT_D160, "clkout_d160", CLKOUT, 160),
D_DIV(CLKOUT_D1OR2, "clkout_d1or2", CLKOUT, 0, 1, 2),
D_FFC(CLKOUT_D20, "clkout_d20", CLKOUT, 20),
D_FFC(CLKOUT_D40, "clkout_d40", CLKOUT, 40),
D_FFC(CLKOUT_D5, "clkout_d5", CLKOUT, 5),
D_FFC(CLKOUT_D8, "clkout_d8", CLKOUT, 8),
D_DIV(DIV_ADC, "div_adc", CLKOUT, 77, 50, 250),
D_DIV(DIV_I2C, "div_i2c", CLKOUT, 78, 12, 16),
D_DIV(DIV_NAND, "div_nand", CLKOUT, 82, 12, 32),
D_DIV(DIV_P1_PG, "div_p1_pg", CLKOUT, 68, 12, 200),
D_DIV(DIV_P2_PG, "div_p2_pg", CLKOUT, 62, 12, 128),
D_DIV(DIV_P3_PG, "div_p3_pg", CLKOUT, 64, 8, 128),
D_DIV(DIV_P4_PG, "div_p4_pg", CLKOUT, 66, 8, 128),
D_DIV(DIV_P5_PG, "div_p5_pg", CLKOUT, 71, 10, 40),
D_DIV(DIV_P6_PG, "div_p6_pg", CLKOUT, 18, 12, 64),
D_DIV(DIV_QSPI0, "div_qspi0", CLKOUT, 73, 3, 7),
D_DIV(DIV_QSPI1, "div_qspi1", CLKOUT, 25, 3, 7),
D_DIV(DIV_REF_SYNC, "div_ref_sync", CLKOUT, 56, 2, 16, 2, 4, 8, 16),
D_DIV(DIV_SDIO0, "div_sdio0", CLKOUT, 74, 20, 128),
D_DIV(DIV_SDIO1, "div_sdio1", CLKOUT, 75, 20, 128),
D_DIV(DIV_SWITCH, "div_switch", CLKOUT, 37, 5, 40),
D_DIV(DIV_UART, "div_uart", CLKOUT, 79, 12, 128),
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
D_GATE(CLK_25_PG4, "clk_25_pg4", CLKOUT_D40, RB(0xe8, 9),
RB(0xe8, 10), RB(0xe8, 11), RB(0x00, 0),
RB(0x15c, 3), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_25_PG5, "clk_25_pg5", CLKOUT_D40, RB(0xe8, 12),
RB(0xe8, 13), RB(0xe8, 14), RB(0x00, 0),
RB(0x15c, 4), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_25_PG6, "clk_25_pg6", CLKOUT_D40, RB(0xe8, 15),
RB(0xe8, 16), RB(0xe8, 17), RB(0x00, 0),
RB(0x15c, 5), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_25_PG7, "clk_25_pg7", CLKOUT_D40, RB(0xe8, 18),
RB(0xe8, 19), RB(0xe8, 20), RB(0x00, 0),
RB(0x15c, 6), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_25_PG8, "clk_25_pg8", CLKOUT_D40, RB(0xe8, 21),
RB(0xe8, 22), RB(0xe8, 23), RB(0x00, 0),
RB(0x15c, 7), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_ADC, "clk_adc", DIV_ADC, RB(0x3c, 10),
RB(0x3c, 11), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_ECAT100, "clk_ecat100", CLKOUT_D10, RB(0x80, 5),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_HSR100, "clk_hsr100", CLKOUT_D10, RB(0x90, 3),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_I2C0, "clk_i2c0", DIV_I2C, RB(0x3c, 6),
RB(0x3c, 7), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_I2C1, "clk_i2c1", DIV_I2C, RB(0x3c, 8),
RB(0x3c, 9), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_MII_REF, "clk_mii_ref", CLKOUT_D40, RB(0x68, 2),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_NAND, "clk_nand", DIV_NAND, RB(0x50, 4),
RB(0x50, 5), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_NOUSBP2_PG6, "clk_nousbp2_pg6", DIV_P2_PG, RB(0xec, 20),
RB(0xec, 21), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_P1_PG2, "clk_p1_pg2", DIV_P1_PG, RB(0x10c, 2),
RB(0x10c, 3), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_P1_PG3, "clk_p1_pg3", DIV_P1_PG, RB(0x10c, 4),
RB(0x10c, 5), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_P1_PG4, "clk_p1_pg4", DIV_P1_PG, RB(0x10c, 6),
RB(0x10c, 7), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_P4_PG3, "clk_p4_pg3", DIV_P4_PG, RB(0x104, 4),
RB(0x104, 5), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_P4_PG4, "clk_p4_pg4", DIV_P4_PG, RB(0x104, 6),
RB(0x104, 7), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_P6_PG1, "clk_p6_pg1", DIV_P6_PG, RB(0x114, 0),
RB(0x114, 1), RB(0x114, 2), RB(0x00, 0),
RB(0x16c, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_P6_PG2, "clk_p6_pg2", DIV_P6_PG, RB(0x114, 3),
RB(0x114, 4), RB(0x114, 5), RB(0x00, 0),
RB(0x16c, 1), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_P6_PG3, "clk_p6_pg3", DIV_P6_PG, RB(0x114, 6),
RB(0x114, 7), RB(0x114, 8), RB(0x00, 0),
RB(0x16c, 2), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_P6_PG4, "clk_p6_pg4", DIV_P6_PG, RB(0x114, 9),
RB(0x114, 10), RB(0x114, 11), RB(0x00, 0),
RB(0x16c, 3), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(CLK_PCI_USB, "clk_pci_usb", CLKOUT_D40, RB(0x1c, 6),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_QSPI0, "clk_qspi0", DIV_QSPI0, RB(0x54, 4),
RB(0x54, 5), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_QSPI1, "clk_qspi1", DIV_QSPI1, RB(0x90, 4),
RB(0x90, 5), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_RGMII_REF, "clk_rgmii_ref", CLKOUT_D8, RB(0x68, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_RMII_REF, "clk_rmii_ref", CLKOUT_D20, RB(0x68, 1),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SDIO0, "clk_sdio0", DIV_SDIO0, RB(0x0c, 4),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SDIO1, "clk_sdio1", DIV_SDIO1, RB(0xc8, 4),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SERCOS100, "clk_sercos100", CLKOUT_D10, RB(0x84, 5),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SLCD, "clk_slcd", DIV_P1_PG, RB(0x10c, 0),
RB(0x10c, 1), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SPI0, "clk_spi0", DIV_P3_PG, RB(0xfc, 0),
RB(0xfc, 1), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SPI1, "clk_spi1", DIV_P3_PG, RB(0xfc, 2),
RB(0xfc, 3), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SPI2, "clk_spi2", DIV_P3_PG, RB(0xfc, 4),
RB(0xfc, 5), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SPI3, "clk_spi3", DIV_P3_PG, RB(0xfc, 6),
RB(0xfc, 7), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SPI4, "clk_spi4", DIV_P4_PG, RB(0x104, 0),
RB(0x104, 1), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SPI5, "clk_spi5", DIV_P4_PG, RB(0x104, 2),
RB(0x104, 3), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SWITCH, "clk_switch", DIV_SWITCH, RB(0x130, 2),
RB(0x130, 3), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
D_DIV(DIV_MOTOR, "div_motor", CLKOUT_D5, 84, 2, 8),
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
D_MODULE(HCLK_ECAT125, "hclk_ecat125", CLKOUT_D8, RB(0x80, 0),
RB(0x80, 1), RB(0x00, 0), RB(0x80, 2),
RB(0x00, 0), RB(0x88, 0), RB(0x88, 1)),
D_MODULE(HCLK_PINCONFIG, "hclk_pinconfig", CLKOUT_D40, RB(0xe8, 0),
RB(0xe8, 1), RB(0xe8, 2), RB(0x00, 0),
RB(0x15c, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SERCOS, "hclk_sercos", CLKOUT_D10, RB(0x84, 0),
RB(0x84, 2), RB(0x00, 0), RB(0x84, 1),
RB(0x00, 0), RB(0x8c, 0), RB(0x8c, 1)),
D_MODULE(HCLK_SGPIO2, "hclk_sgpio2", DIV_P5_PG, RB(0x118, 3),
RB(0x118, 4), RB(0x118, 5), RB(0x00, 0),
RB(0x168, 1), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SGPIO3, "hclk_sgpio3", DIV_P5_PG, RB(0x118, 6),
RB(0x118, 7), RB(0x118, 8), RB(0x00, 0),
RB(0x168, 2), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SGPIO4, "hclk_sgpio4", DIV_P5_PG, RB(0x118, 9),
RB(0x118, 10), RB(0x118, 11), RB(0x00, 0),
RB(0x168, 3), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_TIMER0, "hclk_timer0", CLKOUT_D40, RB(0xe8, 3),
RB(0xe8, 4), RB(0xe8, 5), RB(0x00, 0),
RB(0x15c, 1), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_TIMER1, "hclk_timer1", CLKOUT_D40, RB(0xe8, 6),
RB(0xe8, 7), RB(0xe8, 8), RB(0x00, 0),
RB(0x15c, 2), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_USBF, "hclk_usbf", CLKOUT_D8, RB(0x1c, 3),
RB(0x00, 0), RB(0x00, 0), RB(0x1c, 4),
RB(0x00, 0), RB(0x20, 2), RB(0x20, 3)),
D_MODULE(HCLK_USBH, "hclk_usbh", CLKOUT_D8, RB(0x1c, 0),
RB(0x1c, 1), RB(0x00, 0), RB(0x1c, 2),
RB(0x00, 0), RB(0x20, 0), RB(0x20, 1)),
D_MODULE(HCLK_USBPM, "hclk_usbpm", CLKOUT_D8, RB(0x1c, 5),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_48_PG_F, "clk_48_pg_f", CLK_48, RB(0xf0, 12),
RB(0xf0, 13), RB(0x00, 0), RB(0xf0, 14),
RB(0x00, 0), RB(0x160, 4), RB(0x160, 5)),
D_GATE(CLK_48_PG4, "clk_48_pg4", CLK_48, RB(0xf0, 9),
RB(0xf0, 10), RB(0xf0, 11), RB(0x00, 0),
RB(0x160, 3), RB(0x00, 0), RB(0x00, 0)),
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
D_FFC(CLK_DDRPHY_PLLCLK_D4, "clk_ddrphy_pllclk_d4", CLK_DDRPHY_PLLCLK, 4),
D_FFC(CLK_ECAT100_D4, "clk_ecat100_d4", CLK_ECAT100, 4),
D_FFC(CLK_HSR100_D2, "clk_hsr100_d2", CLK_HSR100, 2),
D_FFC(CLK_REF_SYNC_D4, "clk_ref_sync_d4", CLK_REF_SYNC, 4),
D_FFC(CLK_REF_SYNC_D8, "clk_ref_sync_d8", CLK_REF_SYNC, 8),
D_FFC(CLK_SERCOS100_D2, "clk_sercos100_d2", CLK_SERCOS100, 2),
D_DIV(DIV_CA7, "div_ca7", CLK_REF_SYNC, 57, 1, 4, 1, 2, 4),
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
D_MODULE(HCLK_CAN0, "hclk_can0", CLK_48, RB(0xf0, 3),
RB(0xf0, 4), RB(0xf0, 5), RB(0x00, 0),
RB(0x160, 1), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_CAN1, "hclk_can1", CLK_48, RB(0xf0, 6),
RB(0xf0, 7), RB(0xf0, 8), RB(0x00, 0),
RB(0x160, 2), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_DELTASIGMA, "hclk_deltasigma", DIV_MOTOR, RB(0x3c, 15),
RB(0x3c, 16), RB(0x3c, 17), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_PWMPTO, "hclk_pwmpto", DIV_MOTOR, RB(0x3c, 12),
RB(0x3c, 13), RB(0x3c, 14), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_RSV, "hclk_rsv", CLK_48, RB(0xf0, 0),
RB(0xf0, 1), RB(0xf0, 2), RB(0x00, 0),
RB(0x160, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SGPIO0, "hclk_sgpio0", DIV_MOTOR, RB(0x3c, 0),
RB(0x3c, 1), RB(0x3c, 2), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SGPIO1, "hclk_sgpio1", DIV_MOTOR, RB(0x3c, 3),
RB(0x3c, 4), RB(0x3c, 5), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
D_DIV(RTOS_MDC, "rtos_mdc", CLK_REF_SYNC, 100, 80, 640, 80, 160, 320, 640),
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
D_GATE(CLK_CM3, "clk_cm3", CLK_REF_SYNC_D4, RB(0x174, 0),
RB(0x174, 1), RB(0x00, 0), RB(0x174, 2),
RB(0x00, 0), RB(0x178, 0), RB(0x178, 1)),
D_GATE(CLK_DDRC, "clk_ddrc", CLK_DDRPHY_PLLCLK_D4, RB(0x64, 3),
RB(0x64, 4), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_ECAT25, "clk_ecat25", CLK_ECAT100_D4, RB(0x80, 3),
RB(0x80, 4), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_HSR50, "clk_hsr50", CLK_HSR100_D2, RB(0x90, 4),
RB(0x90, 5), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_HW_RTOS, "clk_hw_rtos", CLK_REF_SYNC_D4, RB(0x18c, 0),
RB(0x18c, 1), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_GATE(CLK_SERCOS50, "clk_sercos50", CLK_SERCOS100_D2, RB(0x84, 4),
RB(0x84, 3), RB(0x00, 0), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_ADC, "hclk_adc", CLK_REF_SYNC_D8, RB(0x34, 15),
RB(0x34, 16), RB(0x34, 17), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_CM3, "hclk_cm3", CLK_REF_SYNC_D4, RB(0x184, 0),
RB(0x184, 1), RB(0x184, 2), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_CRYPTO_EIP150, "hclk_crypto_eip150", CLK_REF_SYNC_D4, RB(0x24, 3),
RB(0x24, 4), RB(0x24, 5), RB(0x00, 0),
RB(0x28, 2), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_CRYPTO_EIP93, "hclk_crypto_eip93", CLK_REF_SYNC_D4, RB(0x24, 0),
RB(0x24, 1), RB(0x00, 0), RB(0x24, 2),
RB(0x00, 0), RB(0x28, 0), RB(0x28, 1)),
D_MODULE(HCLK_DDRC, "hclk_ddrc", CLK_REF_SYNC_D4, RB(0x64, 0),
RB(0x64, 2), RB(0x00, 0), RB(0x64, 1),
RB(0x00, 0), RB(0x74, 0), RB(0x74, 1)),
D_MODULE(HCLK_DMA0, "hclk_dma0", CLK_REF_SYNC_D4, RB(0x4c, 0),
RB(0x4c, 1), RB(0x4c, 2), RB(0x4c, 3),
RB(0x58, 0), RB(0x58, 1), RB(0x58, 2)),
D_MODULE(HCLK_DMA1, "hclk_dma1", CLK_REF_SYNC_D4, RB(0x4c, 4),
RB(0x4c, 5), RB(0x4c, 6), RB(0x4c, 7),
RB(0x58, 3), RB(0x58, 4), RB(0x58, 5)),
D_MODULE(HCLK_GMAC0, "hclk_gmac0", CLK_REF_SYNC_D4, RB(0x6c, 0),
RB(0x6c, 1), RB(0x6c, 2), RB(0x6c, 3),
RB(0x78, 0), RB(0x78, 1), RB(0x78, 2)),
D_MODULE(HCLK_GMAC1, "hclk_gmac1", CLK_REF_SYNC_D4, RB(0x70, 0),
RB(0x70, 1), RB(0x70, 2), RB(0x70, 3),
RB(0x7c, 0), RB(0x7c, 1), RB(0x7c, 2)),
D_MODULE(HCLK_GPIO0, "hclk_gpio0", CLK_REF_SYNC_D4, RB(0x40, 18),
RB(0x40, 19), RB(0x40, 20), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_GPIO1, "hclk_gpio1", CLK_REF_SYNC_D4, RB(0x40, 21),
RB(0x40, 22), RB(0x40, 23), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_GPIO2, "hclk_gpio2", CLK_REF_SYNC_D4, RB(0x44, 9),
RB(0x44, 10), RB(0x44, 11), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_HSR, "hclk_hsr", CLK_HSR100_D2, RB(0x90, 0),
RB(0x90, 2), RB(0x00, 0), RB(0x90, 1),
RB(0x00, 0), RB(0x98, 0), RB(0x98, 1)),
D_MODULE(HCLK_I2C0, "hclk_i2c0", CLK_REF_SYNC_D8, RB(0x34, 9),
RB(0x34, 10), RB(0x34, 11), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_I2C1, "hclk_i2c1", CLK_REF_SYNC_D8, RB(0x34, 12),
RB(0x34, 13), RB(0x34, 14), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_LCD, "hclk_lcd", CLK_REF_SYNC_D4, RB(0xf4, 0),
RB(0xf4, 1), RB(0xf4, 2), RB(0x00, 0),
RB(0x164, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_MSEBI_M, "hclk_msebi_m", CLK_REF_SYNC_D4, RB(0x2c, 4),
RB(0x2c, 5), RB(0x2c, 6), RB(0x00, 0),
RB(0x30, 3), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_MSEBI_S, "hclk_msebi_s", CLK_REF_SYNC_D4, RB(0x2c, 0),
RB(0x2c, 1), RB(0x2c, 2), RB(0x2c, 3),
RB(0x30, 0), RB(0x30, 1), RB(0x30, 2)),
D_MODULE(HCLK_NAND, "hclk_nand", CLK_REF_SYNC_D4, RB(0x50, 0),
RB(0x50, 1), RB(0x50, 2), RB(0x50, 3),
RB(0x5c, 0), RB(0x5c, 1), RB(0x5c, 2)),
D_MODULE(HCLK_PG_I, "hclk_pg_i", CLK_REF_SYNC_D4, RB(0xf4, 12),
RB(0xf4, 13), RB(0x00, 0), RB(0xf4, 14),
RB(0x00, 0), RB(0x164, 4), RB(0x164, 5)),
D_MODULE(HCLK_PG19, "hclk_pg19", CLK_REF_SYNC_D4, RB(0x44, 12),
RB(0x44, 13), RB(0x44, 14), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_PG20, "hclk_pg20", CLK_REF_SYNC_D4, RB(0x44, 15),
RB(0x44, 16), RB(0x44, 17), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_PG3, "hclk_pg3", CLK_REF_SYNC_D4, RB(0xf4, 6),
RB(0xf4, 7), RB(0xf4, 8), RB(0x00, 0),
RB(0x164, 2), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_PG4, "hclk_pg4", CLK_REF_SYNC_D4, RB(0xf4, 9),
RB(0xf4, 10), RB(0xf4, 11), RB(0x00, 0),
RB(0x164, 3), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_QSPI0, "hclk_qspi0", CLK_REF_SYNC_D4, RB(0x54, 0),
RB(0x54, 1), RB(0x54, 2), RB(0x54, 3),
RB(0x60, 0), RB(0x60, 1), RB(0x60, 2)),
D_MODULE(HCLK_QSPI1, "hclk_qspi1", CLK_REF_SYNC_D4, RB(0x90, 0),
RB(0x90, 1), RB(0x90, 2), RB(0x90, 3),
RB(0x98, 0), RB(0x98, 1), RB(0x98, 2)),
D_MODULE(HCLK_ROM, "hclk_rom", CLK_REF_SYNC_D4, RB(0x154, 0),
RB(0x154, 1), RB(0x154, 2), RB(0x00, 0),
RB(0x170, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_RTC, "hclk_rtc", CLK_REF_SYNC_D8, RB(0x140, 0),
RB(0x140, 3), RB(0x00, 0), RB(0x140, 2),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SDIO0, "hclk_sdio0", CLK_REF_SYNC_D4, RB(0x0c, 0),
RB(0x0c, 1), RB(0x0c, 2), RB(0x0c, 3),
RB(0x10, 0), RB(0x10, 1), RB(0x10, 2)),
D_MODULE(HCLK_SDIO1, "hclk_sdio1", CLK_REF_SYNC_D4, RB(0xc8, 0),
RB(0xc8, 1), RB(0xc8, 2), RB(0xc8, 3),
RB(0xcc, 0), RB(0xcc, 1), RB(0xcc, 2)),
D_MODULE(HCLK_SEMAP, "hclk_semap", CLK_REF_SYNC_D4, RB(0xf4, 3),
RB(0xf4, 4), RB(0xf4, 5), RB(0x00, 0),
RB(0x164, 1), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SPI0, "hclk_spi0", CLK_REF_SYNC_D4, RB(0x40, 0),
RB(0x40, 1), RB(0x40, 2), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SPI1, "hclk_spi1", CLK_REF_SYNC_D4, RB(0x40, 3),
RB(0x40, 4), RB(0x40, 5), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SPI2, "hclk_spi2", CLK_REF_SYNC_D4, RB(0x40, 6),
RB(0x40, 7), RB(0x40, 8), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SPI3, "hclk_spi3", CLK_REF_SYNC_D4, RB(0x40, 9),
RB(0x40, 10), RB(0x40, 11), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SPI4, "hclk_spi4", CLK_REF_SYNC_D4, RB(0x40, 12),
RB(0x40, 13), RB(0x40, 14), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SPI5, "hclk_spi5", CLK_REF_SYNC_D4, RB(0x40, 15),
RB(0x40, 16), RB(0x40, 17), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SWITCH, "hclk_switch", CLK_REF_SYNC_D4, RB(0x130, 0),
RB(0x00, 0), RB(0x130, 1), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_SWITCH_RG, "hclk_switch_rg", CLK_REF_SYNC_D4, RB(0x188, 0),
RB(0x188, 1), RB(0x188, 2), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_UART0, "hclk_uart0", CLK_REF_SYNC_D8, RB(0x34, 0),
RB(0x34, 1), RB(0x34, 2), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_UART1, "hclk_uart1", CLK_REF_SYNC_D8, RB(0x34, 3),
RB(0x34, 4), RB(0x34, 5), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_UART2, "hclk_uart2", CLK_REF_SYNC_D8, RB(0x34, 6),
RB(0x34, 7), RB(0x34, 8), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_UART3, "hclk_uart3", CLK_REF_SYNC_D4, RB(0x40, 24),
RB(0x40, 25), RB(0x40, 26), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_UART4, "hclk_uart4", CLK_REF_SYNC_D4, RB(0x40, 27),
RB(0x40, 28), RB(0x40, 29), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_UART5, "hclk_uart5", CLK_REF_SYNC_D4, RB(0x44, 0),
RB(0x44, 1), RB(0x44, 2), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_UART6, "hclk_uart6", CLK_REF_SYNC_D4, RB(0x44, 3),
RB(0x44, 4), RB(0x44, 5), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
D_MODULE(HCLK_UART7, "hclk_uart7", CLK_REF_SYNC_D4, RB(0x44, 6),
RB(0x44, 7), RB(0x44, 8), RB(0x00, 0),
RB(0x00, 0), RB(0x00, 0), RB(0x00, 0)),
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
/*
* These are not hardware clocks, but are needed to handle the special
* case where we have a 'selector bit' that doesn't just change the
clk: renesas: Couple of spelling fixes s/suposed/supposed/ s/concurent/concurrent/ Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20210321075813.9471-1-unixbhaskar@gmail.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-03-21 07:58:13 +00:00
* parent for a clock, but also the gate it's supposed to use.
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
*/
{
.index = R9A06G032_UART_GROUP_012,
.name = "uart_group_012",
.type = K_BITSEL,
.source = 1 + R9A06G032_DIV_UART,
clk: renesas: r9a06g032: Fix UART clkgrp bitsel There are two UART clock groups, each having a mux to select its upstream clock source. The register/bit definitions for accessing these two muxes appear to have been reversed since introduction. Correct them so as to match the hardware manual. Fixes: 4c3d88526eba ("clk: renesas: Renesas R9A06G032 clock driver") Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Phil Edworthy <phil.edworthy@renesas.com> Link: https://lore.kernel.org/r/20220518182527.1693156-1-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-18 18:25:27 +00:00
/* R9A06G032_SYSCTRL_REG_PWRCTRL_PG0_0 */
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
.dual.sel = RB(0x34, 30),
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
.dual.group = 0,
},
{
.index = R9A06G032_UART_GROUP_34567,
.name = "uart_group_34567",
.type = K_BITSEL,
.source = 1 + R9A06G032_DIV_P2_PG,
clk: renesas: r9a06g032: Fix UART clkgrp bitsel There are two UART clock groups, each having a mux to select its upstream clock source. The register/bit definitions for accessing these two muxes appear to have been reversed since introduction. Correct them so as to match the hardware manual. Fixes: 4c3d88526eba ("clk: renesas: Renesas R9A06G032 clock driver") Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Phil Edworthy <phil.edworthy@renesas.com> Link: https://lore.kernel.org/r/20220518182527.1693156-1-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-05-18 18:25:27 +00:00
/* R9A06G032_SYSCTRL_REG_PWRCTRL_PG1_PR2 */
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
.dual.sel = RB(0xec, 24),
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
.dual.group = 1,
},
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
D_UGATE(CLK_UART0, "clk_uart0", UART_GROUP_012, 0,
RB(0x34, 18), RB(0x34, 19), RB(0x34, 20), RB(0x34, 21)),
D_UGATE(CLK_UART1, "clk_uart1", UART_GROUP_012, 0,
RB(0x34, 22), RB(0x34, 23), RB(0x34, 24), RB(0x34, 25)),
D_UGATE(CLK_UART2, "clk_uart2", UART_GROUP_012, 0,
RB(0x34, 26), RB(0x34, 27), RB(0x34, 28), RB(0x34, 29)),
D_UGATE(CLK_UART3, "clk_uart3", UART_GROUP_34567, 1,
RB(0xec, 0), RB(0xec, 1), RB(0xec, 2), RB(0xec, 3)),
D_UGATE(CLK_UART4, "clk_uart4", UART_GROUP_34567, 1,
RB(0xec, 4), RB(0xec, 5), RB(0xec, 6), RB(0xec, 7)),
D_UGATE(CLK_UART5, "clk_uart5", UART_GROUP_34567, 1,
RB(0xec, 8), RB(0xec, 9), RB(0xec, 10), RB(0xec, 11)),
D_UGATE(CLK_UART6, "clk_uart6", UART_GROUP_34567, 1,
RB(0xec, 12), RB(0xec, 13), RB(0xec, 14), RB(0xec, 15)),
D_UGATE(CLK_UART7, "clk_uart7", UART_GROUP_34567, 1,
RB(0xec, 16), RB(0xec, 17), RB(0xec, 18), RB(0xec, 19)),
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
};
struct r9a06g032_priv {
struct clk_onecell_data data;
clk: renesas: Couple of spelling fixes s/suposed/supposed/ s/concurent/concurrent/ Signed-off-by: Bhaskar Chowdhury <unixbhaskar@gmail.com> Acked-by: Randy Dunlap <rdunlap@infradead.org> Link: https://lore.kernel.org/r/20210321075813.9471-1-unixbhaskar@gmail.com Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2021-03-21 07:58:13 +00:00
spinlock_t lock; /* protects concurrent access to gates */
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
void __iomem *reg;
};
clk: renesas: r9a06g032: Export function to set dmamux The dmamux register is located within the system controller. Without syscon, we need an extra helper in order to give write access to this register to a dmamux driver. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220427095653.91804-5-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-04-27 09:56:48 +00:00
static struct r9a06g032_priv *sysctrl_priv;
/* Exported helper to access the DMAMUX register */
int r9a06g032_sysctrl_set_dmamux(u32 mask, u32 val)
{
unsigned long flags;
u32 dmamux;
if (!sysctrl_priv)
return -EPROBE_DEFER;
spin_lock_irqsave(&sysctrl_priv->lock, flags);
dmamux = readl(sysctrl_priv->reg + R9A06G032_SYSCTRL_DMAMUX);
dmamux &= ~mask;
dmamux |= val & mask;
writel(dmamux, sysctrl_priv->reg + R9A06G032_SYSCTRL_DMAMUX);
spin_unlock_irqrestore(&sysctrl_priv->lock, flags);
return 0;
}
EXPORT_SYMBOL_GPL(r9a06g032_sysctrl_set_dmamux);
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
static void clk_rdesc_set(struct r9a06g032_priv *clocks,
struct regbit rb, unsigned int on)
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
{
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
u32 __iomem *reg = clocks->reg + (rb.reg * 4);
u32 val;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
if (!rb.reg && !rb.bit)
return;
val = readl(reg);
val = (val & ~BIT(rb.bit)) | ((!!on) << rb.bit);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
writel(val, reg);
}
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
static int clk_rdesc_get(struct r9a06g032_priv *clocks, struct regbit rb)
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
{
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
u32 __iomem *reg = clocks->reg + (rb.reg * 4);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
u32 val = readl(reg);
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
return !!(val & BIT(rb.bit));
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
}
/*
clk: renesas: r9a06g032: Fix some typo in comments This file seems to be for R9A06G032 only. So replace reference to R9A09G032 by R9A06G032 to avoid confusion. AFAIK, R9A09G032 does'nt exist. Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Link: https://lore.kernel.org/r/20200413041709.3630-1-christophe.jaillet@wanadoo.fr Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2020-04-13 04:17:09 +00:00
* This implements the R9A06G032 clock gate 'driver'. We cannot use the system's
* clock gate framework as the gates on the R9A06G032 have a special enabling
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
* sequence, therefore we use this little proxy.
*/
struct r9a06g032_clk_gate {
struct clk_hw hw;
struct r9a06g032_priv *clocks;
u16 index;
struct r9a06g032_gate gate;
};
#define to_r9a06g032_gate(_hw) container_of(_hw, struct r9a06g032_clk_gate, hw)
clk: renesas: r9a06g032: Add clock domain support There are several clocks on the r9a06g032 which are currently not enabled in their drivers that can be delegated to clock domain system for power management. Therefore add support for clock domain functionality to the r9a06g032 clock driver. Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-05-28 11:54:27 +00:00
static int create_add_module_clock(struct of_phandle_args *clkspec,
struct device *dev)
{
struct clk *clk;
int error;
clk = of_clk_get_from_provider(clkspec);
if (IS_ERR(clk))
return PTR_ERR(clk);
error = pm_clk_create(dev);
if (error) {
clk_put(clk);
return error;
}
error = pm_clk_add_clk(dev, clk);
if (error) {
pm_clk_destroy(dev);
clk_put(clk);
}
return error;
}
static int r9a06g032_attach_dev(struct generic_pm_domain *pd,
struct device *dev)
{
struct device_node *np = dev->of_node;
struct of_phandle_args clkspec;
int i = 0;
int error;
int index;
clk: renesas: r9a06g032: Repair grave increment error If condition (clkspec.np != pd->dev.of_node) is true, then the driver ends up in an endless loop, forever, locking up the machine. Fixes: aad03a66f902 ("clk: renesas: r9a06g032: Add clock domain support") Reviewed-by: Ralph Siemsen <ralph.siemsen@linaro.org> Signed-off-by: Marek Vasut <marex@denx.de> Reviewed-by: Gareth Williams <gareth.williams.jx@renesas.com> Link: https://lore.kernel.org/r/20221028113834.7496-1-marex@denx.de Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2022-10-28 11:38:34 +00:00
while (!of_parse_phandle_with_args(np, "clocks", "#clock-cells", i++,
clk: renesas: r9a06g032: Add clock domain support There are several clocks on the r9a06g032 which are currently not enabled in their drivers that can be delegated to clock domain system for power management. Therefore add support for clock domain functionality to the r9a06g032 clock driver. Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-05-28 11:54:27 +00:00
&clkspec)) {
if (clkspec.np != pd->dev.of_node)
continue;
index = clkspec.args[0];
if (index < R9A06G032_CLOCK_COUNT &&
r9a06g032_clocks[index].managed) {
error = create_add_module_clock(&clkspec, dev);
of_node_put(clkspec.np);
if (error)
return error;
}
}
return 0;
}
static void r9a06g032_detach_dev(struct generic_pm_domain *unused, struct device *dev)
{
if (!pm_clk_no_clocks(dev))
pm_clk_destroy(dev);
}
static int r9a06g032_add_clk_domain(struct device *dev)
{
struct device_node *np = dev->of_node;
struct generic_pm_domain *pd;
pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
if (!pd)
return -ENOMEM;
pd->name = np->name;
clk: renesas: r9a06g032: Set GENPD_FLAG_ALWAYS_ON for clock domain The RZ/N1 Clock Domain driver does not implement the generic_pm_domain.power_{on,off}() callbacks, as the domain itself cannot be powered down. Hence the domain should be marked as always-on by setting the GENPD_FLAG_ALWAYS_ON flag, to prevent the core PM Domain code from considering it for power-off, and doing unnessary processing. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Simon Horman <horms+renesas@verge.net.au> Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
2019-08-09 13:43:07 +00:00
pd->flags = GENPD_FLAG_PM_CLK | GENPD_FLAG_ALWAYS_ON |
GENPD_FLAG_ACTIVE_WAKEUP;
clk: renesas: r9a06g032: Add clock domain support There are several clocks on the r9a06g032 which are currently not enabled in their drivers that can be delegated to clock domain system for power management. Therefore add support for clock domain functionality to the r9a06g032 clock driver. Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-05-28 11:54:27 +00:00
pd->attach_dev = r9a06g032_attach_dev;
pd->detach_dev = r9a06g032_detach_dev;
pm_genpd_init(pd, &pm_domain_always_on_gov, false);
of_genpd_add_provider_simple(np, pd);
return 0;
}
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
static void
r9a06g032_clk_gate_set(struct r9a06g032_priv *clocks,
struct r9a06g032_gate *g, int on)
{
unsigned long flags;
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
WARN_ON(!g->gate.reg && !g->gate.bit);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
spin_lock_irqsave(&clocks->lock, flags);
clk_rdesc_set(clocks, g->gate, on);
/* De-assert reset */
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
clk_rdesc_set(clocks, g->reset, 1);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
spin_unlock_irqrestore(&clocks->lock, flags);
/* Hardware manual recommends 5us delay after enabling clock & reset */
udelay(5);
/* If the peripheral is memory mapped (i.e. an AXI slave), there is an
* associated SLVRDY bit in the System Controller that needs to be set
* so that the FlexWAY bus fabric passes on the read/write requests.
*/
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
spin_lock_irqsave(&clocks->lock, flags);
clk_rdesc_set(clocks, g->ready, on);
/* Clear 'Master Idle Request' bit */
clk_rdesc_set(clocks, g->midle, !on);
spin_unlock_irqrestore(&clocks->lock, flags);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
/* Note: We don't wait for FlexWAY Socket Connection signal */
}
static int r9a06g032_clk_gate_enable(struct clk_hw *hw)
{
struct r9a06g032_clk_gate *g = to_r9a06g032_gate(hw);
r9a06g032_clk_gate_set(g->clocks, &g->gate, 1);
return 0;
}
static void r9a06g032_clk_gate_disable(struct clk_hw *hw)
{
struct r9a06g032_clk_gate *g = to_r9a06g032_gate(hw);
r9a06g032_clk_gate_set(g->clocks, &g->gate, 0);
}
static int r9a06g032_clk_gate_is_enabled(struct clk_hw *hw)
{
struct r9a06g032_clk_gate *g = to_r9a06g032_gate(hw);
/* if clock is in reset, the gate might be on, and still not 'be' on */
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
if (g->gate.reset.reg && !clk_rdesc_get(g->clocks, g->gate.reset))
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
return 0;
return clk_rdesc_get(g->clocks, g->gate.gate);
}
static const struct clk_ops r9a06g032_clk_gate_ops = {
.enable = r9a06g032_clk_gate_enable,
.disable = r9a06g032_clk_gate_disable,
.is_enabled = r9a06g032_clk_gate_is_enabled,
};
static struct clk *
r9a06g032_register_gate(struct r9a06g032_priv *clocks,
const char *parent_name,
const struct r9a06g032_clkdesc *desc)
{
struct clk *clk;
struct r9a06g032_clk_gate *g;
clk: renesas: Zero init clk_init_data As clk_core_populate_parent_map() checks clk_init_data.num_parents first, and checks clk_init_data.parent_names[] before clk_init_data.parent_data[] and clk_init_data.parent_hws[], leaving the latter uninitialized doesn't do harm for now. However, it is better to play it safe, and initialize all clk_init_data structures to zeroes, to avoid any current and future members containing uninitialized data. Remove a few explicit zero initializers, which are now superfluous. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20210326105434.1574796-1-geert+renesas@glider.be
2021-03-26 10:54:34 +00:00
struct clk_init_data init = {};
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
g = kzalloc(sizeof(*g), GFP_KERNEL);
if (!g)
return NULL;
init.name = desc->name;
init.ops = &r9a06g032_clk_gate_ops;
clk: renesas: Remove usage of CLK_IS_BASIC This flag doesn't look to be used by any code, just set in various clk init structures and then never tested again. Remove it from these drivers as it doesn't provide any benefit. Cc: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: <linux-renesas-soc@vger.kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-11-30 19:05:35 +00:00
init.flags = CLK_SET_RATE_PARENT;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
init.parent_names = parent_name ? &parent_name : NULL;
init.num_parents = parent_name ? 1 : 0;
g->clocks = clocks;
g->index = desc->index;
g->gate = desc->gate;
g->hw.init = &init;
/*
* important here, some clocks are already in use by the CM3, we
* have to assume they are not Linux's to play with and try to disable
* at the end of the boot!
*/
if (r9a06g032_clk_gate_is_enabled(&g->hw)) {
init.flags |= CLK_IS_CRITICAL;
pr_debug("%s was enabled, making read-only\n", desc->name);
}
clk = clk_register(NULL, &g->hw);
if (IS_ERR(clk)) {
kfree(g);
return NULL;
}
return clk;
}
struct r9a06g032_clk_div {
struct clk_hw hw;
struct r9a06g032_priv *clocks;
u16 index;
u16 reg;
u16 min, max;
u8 table_size;
u16 table[8]; /* we know there are no more than 8 */
};
#define to_r9a06g032_div(_hw) \
container_of(_hw, struct r9a06g032_clk_div, hw)
static unsigned long
r9a06g032_div_recalc_rate(struct clk_hw *hw,
unsigned long parent_rate)
{
struct r9a06g032_clk_div *clk = to_r9a06g032_div(hw);
u32 __iomem *reg = clk->clocks->reg + (4 * clk->reg);
u32 div = readl(reg);
if (div < clk->min)
div = clk->min;
else if (div > clk->max)
div = clk->max;
return DIV_ROUND_UP(parent_rate, div);
}
/*
* Attempts to find a value that is in range of min,max,
* and if a table of set dividers was specified for this
* register, try to find the fixed divider that is the closest
* to the target frequency
*/
static long
r9a06g032_div_clamp_div(struct r9a06g032_clk_div *clk,
unsigned long rate, unsigned long prate)
{
/* + 1 to cope with rates that have the remainder dropped */
u32 div = DIV_ROUND_UP(prate, rate + 1);
int i;
if (div <= clk->min)
return clk->min;
if (div >= clk->max)
return clk->max;
for (i = 0; clk->table_size && i < clk->table_size - 1; i++) {
if (div >= clk->table[i] && div <= clk->table[i + 1]) {
unsigned long m = rate -
DIV_ROUND_UP(prate, clk->table[i]);
unsigned long p =
DIV_ROUND_UP(prate, clk->table[i + 1]) -
rate;
/*
* select the divider that generates
* the value closest to the ideal frequency
*/
div = p >= m ? clk->table[i] : clk->table[i + 1];
return div;
}
}
return div;
}
clk: renesas: r9a06g032: Switch to .determine_rate() As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-04-01 13:03:24 +00:00
static int
r9a06g032_div_determine_rate(struct clk_hw *hw, struct clk_rate_request *req)
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
{
struct r9a06g032_clk_div *clk = to_r9a06g032_div(hw);
clk: renesas: r9a06g032: Switch to .determine_rate() As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-04-01 13:03:24 +00:00
u32 div = DIV_ROUND_UP(req->best_parent_rate, req->rate);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
pr_devel("%s %pC %ld (prate %ld) (wanted div %u)\n", __func__,
clk: renesas: r9a06g032: Switch to .determine_rate() As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-04-01 13:03:24 +00:00
hw->clk, req->rate, req->best_parent_rate, div);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
pr_devel(" min %d (%ld) max %d (%ld)\n",
clk: renesas: r9a06g032: Switch to .determine_rate() As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-04-01 13:03:24 +00:00
clk->min, DIV_ROUND_UP(req->best_parent_rate, clk->min),
clk->max, DIV_ROUND_UP(req->best_parent_rate, clk->max));
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
clk: renesas: r9a06g032: Switch to .determine_rate() As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-04-01 13:03:24 +00:00
div = r9a06g032_div_clamp_div(clk, req->rate, req->best_parent_rate);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
/*
* this is a hack. Currently the serial driver asks for a clock rate
* that is 16 times the baud rate -- and that is wildly outside the
* range of the UART divider, somehow there is no provision for that
* case of 'let the divider as is if outside range'.
* The serial driver *shouldn't* play with these clocks anyway, there's
* several uarts attached to this divider, and changing this impacts
* everyone.
*/
clk: renesas: r9a06g032: Fix UART34567 clock rate The clock for UARTs 0 through 2 is UART012, the clock for UARTs 3 through 7 is UART34567. For UART012, we stop the clock driver from changing the clock rate. This is because the Synopsys UART driver simply sets the reference clock to 16x the baud rate, but doesn't check if the actual rate is within the required tolerance. The RZ/N1 clock divider can't provide this (we have to rely on the UART's internal divider to set the correct clock rate), so you end up with a clock rate that is way off what you wanted. In addition, since the clock is shared between multiple UARTs, you don't want the driver trying to change the clock rate as it may affect the other UARTs (which may not have been configured yet, so you don't know what baud rate they will use). Normally, the clock rate is set early on before Linux to some very high rate that supports all of the clock rates you want. This change stops the UART34567 clock rate from changing for the same reasons. Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com> Fixes: 4c3d88526eba2143 ("clk: renesas: Renesas R9A06G032 clock driver") Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-08-31 11:26:36 +00:00
if (clk->index == R9A06G032_DIV_UART ||
clk->index == R9A06G032_DIV_P2_PG) {
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
pr_devel("%s div uart hack!\n", __func__);
clk: renesas: r9a06g032: Switch to .determine_rate() As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-04-01 13:03:24 +00:00
req->rate = clk_get_rate(hw->clk);
return 0;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
}
clk: renesas: r9a06g032: Switch to .determine_rate() As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-04-01 13:03:24 +00:00
req->rate = DIV_ROUND_UP(req->best_parent_rate, div);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
pr_devel("%s %pC %ld / %u = %ld\n", __func__, hw->clk,
clk: renesas: r9a06g032: Switch to .determine_rate() As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-04-01 13:03:24 +00:00
req->best_parent_rate, div, req->rate);
return 0;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
}
static int
r9a06g032_div_set_rate(struct clk_hw *hw,
unsigned long rate, unsigned long parent_rate)
{
struct r9a06g032_clk_div *clk = to_r9a06g032_div(hw);
/* + 1 to cope with rates that have the remainder dropped */
u32 div = DIV_ROUND_UP(parent_rate, rate + 1);
u32 __iomem *reg = clk->clocks->reg + (4 * clk->reg);
pr_devel("%s %pC rate %ld parent %ld div %d\n", __func__, hw->clk,
rate, parent_rate, div);
/*
* Need to write the bit 31 with the divider value to
* latch it. Technically we should wait until it has been
* cleared too.
* TODO: Find whether this callback is sleepable, in case
* the hardware /does/ require some sort of spinloop here.
*/
writel(div | BIT(31), reg);
return 0;
}
static const struct clk_ops r9a06g032_clk_div_ops = {
.recalc_rate = r9a06g032_div_recalc_rate,
clk: renesas: r9a06g032: Switch to .determine_rate() As the .round_rate() callback returns a long clock rate, it cannot return clock rates that do not fit in signed long, but do fit in unsigned long. Hence switch the divider clocks on RZ/N1 from the old .round_rate() callback to the newer .determine_rate() callback, which does not suffer from this limitation. Note that range checking is not yet implemented. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/7a384d02b85cdaac4a0e2b357582c8244b9a6f98.1617282116.git.geert+renesas@glider.be
2021-04-01 13:03:24 +00:00
.determine_rate = r9a06g032_div_determine_rate,
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
.set_rate = r9a06g032_div_set_rate,
};
static struct clk *
r9a06g032_register_div(struct r9a06g032_priv *clocks,
const char *parent_name,
const struct r9a06g032_clkdesc *desc)
{
struct r9a06g032_clk_div *div;
struct clk *clk;
clk: renesas: Zero init clk_init_data As clk_core_populate_parent_map() checks clk_init_data.num_parents first, and checks clk_init_data.parent_names[] before clk_init_data.parent_data[] and clk_init_data.parent_hws[], leaving the latter uninitialized doesn't do harm for now. However, it is better to play it safe, and initialize all clk_init_data structures to zeroes, to avoid any current and future members containing uninitialized data. Remove a few explicit zero initializers, which are now superfluous. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20210326105434.1574796-1-geert+renesas@glider.be
2021-03-26 10:54:34 +00:00
struct clk_init_data init = {};
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
unsigned int i;
div = kzalloc(sizeof(*div), GFP_KERNEL);
if (!div)
return NULL;
init.name = desc->name;
init.ops = &r9a06g032_clk_div_ops;
clk: renesas: Remove usage of CLK_IS_BASIC This flag doesn't look to be used by any code, just set in various clk init structures and then never tested again. Remove it from these drivers as it doesn't provide any benefit. Cc: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: <linux-renesas-soc@vger.kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-11-30 19:05:35 +00:00
init.flags = CLK_SET_RATE_PARENT;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
init.parent_names = parent_name ? &parent_name : NULL;
init.num_parents = parent_name ? 1 : 0;
div->clocks = clocks;
div->index = desc->index;
div->reg = desc->reg;
div->hw.init = &init;
div->min = desc->div_min;
div->max = desc->div_max;
/* populate (optional) divider table fixed values */
for (i = 0; i < ARRAY_SIZE(div->table) &&
i < ARRAY_SIZE(desc->div_table) && desc->div_table[i]; i++) {
div->table[div->table_size++] = desc->div_table[i];
}
clk = clk_register(NULL, &div->hw);
if (IS_ERR(clk)) {
kfree(div);
return NULL;
}
return clk;
}
/*
* This clock provider handles the case of the R9A06G032 where you have
* peripherals that have two potential clock source and two gates, one for
* each of the clock source - the used clock source (for all sub clocks)
* is selected by a single bit.
* That single bit affects all sub-clocks, and therefore needs to change the
* active gate (and turn the others off) and force a recalculation of the rates.
*
* This implements two clock providers, one 'bitselect' that
* handles the switch between both parents, and another 'dualgate'
* that knows which gate to poke at, depending on the parent's bit position.
*/
struct r9a06g032_clk_bitsel {
struct clk_hw hw;
struct r9a06g032_priv *clocks;
u16 index;
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
struct regbit selector; /* selector register + bit */
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
};
#define to_clk_bitselect(_hw) \
container_of(_hw, struct r9a06g032_clk_bitsel, hw)
static u8 r9a06g032_clk_mux_get_parent(struct clk_hw *hw)
{
struct r9a06g032_clk_bitsel *set = to_clk_bitselect(hw);
return clk_rdesc_get(set->clocks, set->selector);
}
static int r9a06g032_clk_mux_set_parent(struct clk_hw *hw, u8 index)
{
struct r9a06g032_clk_bitsel *set = to_clk_bitselect(hw);
/* a single bit in the register selects one of two parent clocks */
clk_rdesc_set(set->clocks, set->selector, !!index);
return 0;
}
static const struct clk_ops clk_bitselect_ops = {
clk: renesas: r9a06g032: Add a determine_rate hook The Renesas r9a06g032 bitselect clock implements a mux with a set_parent hook, but doesn't provide a determine_rate implementation. This is a bit odd, since set_parent() is there to, as its name implies, change the parent of a clock. However, the most likely candidates to trigger that parent change are either the assigned-clock-parents device tree property or a call to clk_set_rate(), with determine_rate() figuring out which parent is the best suited for a given rate. The other trigger would be a call to clk_set_parent(), but it's far less used, and it doesn't look like there's any obvious user for that clock. Similarly, it doesn't look like the device tree using that clock driver uses any of the assigned-clock properties on that clock. So, the set_parent hook is effectively unused, possibly because of an oversight. However, it could also be an explicit decision by the original author to avoid any reparenting but through an explicit call to clk_set_parent(). The latter case would be equivalent to setting the determine_rate implementation to clk_hw_determine_rate_no_reparent(). Indeed, if no determine_rate implementation is provided, clk_round_rate() (through clk_core_round_rate_nolock()) will call itself on the parent if CLK_SET_RATE_PARENT is set, and will not change the clock rate otherwise. And if it was an oversight, then we are at least explicit about our behavior now and it can be further refined down the line. Cc: Geert Uytterhoeven <geert+renesas@glider.be> Cc: linux-renesas-soc@vger.kernel.org Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Signed-off-by: Maxime Ripard <maxime@cerno.tech> Link: https://lore.kernel.org/r/20221018-clk-range-checks-fixes-v4-31-971d5077e7d2@cerno.tech Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2023-05-05 11:25:33 +00:00
.determine_rate = clk_hw_determine_rate_no_reparent,
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
.get_parent = r9a06g032_clk_mux_get_parent,
.set_parent = r9a06g032_clk_mux_set_parent,
};
static struct clk *
r9a06g032_register_bitsel(struct r9a06g032_priv *clocks,
const char *parent_name,
const struct r9a06g032_clkdesc *desc)
{
struct clk *clk;
struct r9a06g032_clk_bitsel *g;
clk: renesas: Zero init clk_init_data As clk_core_populate_parent_map() checks clk_init_data.num_parents first, and checks clk_init_data.parent_names[] before clk_init_data.parent_data[] and clk_init_data.parent_hws[], leaving the latter uninitialized doesn't do harm for now. However, it is better to play it safe, and initialize all clk_init_data structures to zeroes, to avoid any current and future members containing uninitialized data. Remove a few explicit zero initializers, which are now superfluous. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20210326105434.1574796-1-geert+renesas@glider.be
2021-03-26 10:54:34 +00:00
struct clk_init_data init = {};
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
const char *names[2];
/* allocate the gate */
g = kzalloc(sizeof(*g), GFP_KERNEL);
if (!g)
return NULL;
names[0] = parent_name;
names[1] = "clk_pll_usb";
init.name = desc->name;
init.ops = &clk_bitselect_ops;
clk: renesas: Remove usage of CLK_IS_BASIC This flag doesn't look to be used by any code, just set in various clk init structures and then never tested again. Remove it from these drivers as it doesn't provide any benefit. Cc: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: <linux-renesas-soc@vger.kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-11-30 19:05:35 +00:00
init.flags = CLK_SET_RATE_PARENT;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
init.parent_names = names;
init.num_parents = 2;
g->clocks = clocks;
g->index = desc->index;
g->selector = desc->dual.sel;
g->hw.init = &init;
clk = clk_register(NULL, &g->hw);
if (IS_ERR(clk)) {
kfree(g);
return NULL;
}
return clk;
}
struct r9a06g032_clk_dualgate {
struct clk_hw hw;
struct r9a06g032_priv *clocks;
u16 index;
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
struct regbit selector; /* selector register + bit */
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
struct r9a06g032_gate gate[2];
};
#define to_clk_dualgate(_hw) \
container_of(_hw, struct r9a06g032_clk_dualgate, hw)
static int
r9a06g032_clk_dualgate_setenable(struct r9a06g032_clk_dualgate *g, int enable)
{
u8 sel_bit = clk_rdesc_get(g->clocks, g->selector);
/* we always turn off the 'other' gate, regardless */
r9a06g032_clk_gate_set(g->clocks, &g->gate[!sel_bit], 0);
r9a06g032_clk_gate_set(g->clocks, &g->gate[sel_bit], enable);
return 0;
}
static int r9a06g032_clk_dualgate_enable(struct clk_hw *hw)
{
struct r9a06g032_clk_dualgate *gate = to_clk_dualgate(hw);
r9a06g032_clk_dualgate_setenable(gate, 1);
return 0;
}
static void r9a06g032_clk_dualgate_disable(struct clk_hw *hw)
{
struct r9a06g032_clk_dualgate *gate = to_clk_dualgate(hw);
r9a06g032_clk_dualgate_setenable(gate, 0);
}
static int r9a06g032_clk_dualgate_is_enabled(struct clk_hw *hw)
{
struct r9a06g032_clk_dualgate *g = to_clk_dualgate(hw);
u8 sel_bit = clk_rdesc_get(g->clocks, g->selector);
return clk_rdesc_get(g->clocks, g->gate[sel_bit].gate);
}
static const struct clk_ops r9a06g032_clk_dualgate_ops = {
.enable = r9a06g032_clk_dualgate_enable,
.disable = r9a06g032_clk_dualgate_disable,
.is_enabled = r9a06g032_clk_dualgate_is_enabled,
};
static struct clk *
r9a06g032_register_dualgate(struct r9a06g032_priv *clocks,
const char *parent_name,
const struct r9a06g032_clkdesc *desc,
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
struct regbit sel)
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
{
struct r9a06g032_clk_dualgate *g;
struct clk *clk;
clk: renesas: Zero init clk_init_data As clk_core_populate_parent_map() checks clk_init_data.num_parents first, and checks clk_init_data.parent_names[] before clk_init_data.parent_data[] and clk_init_data.parent_hws[], leaving the latter uninitialized doesn't do harm for now. However, it is better to play it safe, and initialize all clk_init_data structures to zeroes, to avoid any current and future members containing uninitialized data. Remove a few explicit zero initializers, which are now superfluous. Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20210326105434.1574796-1-geert+renesas@glider.be
2021-03-26 10:54:34 +00:00
struct clk_init_data init = {};
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
/* allocate the gate */
g = kzalloc(sizeof(*g), GFP_KERNEL);
if (!g)
return NULL;
g->clocks = clocks;
g->index = desc->index;
g->selector = sel;
g->gate[0].gate = desc->dual.g1;
g->gate[0].reset = desc->dual.r1;
g->gate[1].gate = desc->dual.g2;
g->gate[1].reset = desc->dual.r2;
init.name = desc->name;
init.ops = &r9a06g032_clk_dualgate_ops;
clk: renesas: Remove usage of CLK_IS_BASIC This flag doesn't look to be used by any code, just set in various clk init structures and then never tested again. Remove it from these drivers as it doesn't provide any benefit. Cc: Geert Uytterhoeven <geert+renesas@glider.be> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Cc: <linux-renesas-soc@vger.kernel.org> Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2018-11-30 19:05:35 +00:00
init.flags = CLK_SET_RATE_PARENT;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
init.parent_names = &parent_name;
init.num_parents = 1;
g->hw.init = &init;
/*
* important here, some clocks are already in use by the CM3, we
* have to assume they are not Linux's to play with and try to disable
* at the end of the boot!
*/
if (r9a06g032_clk_dualgate_is_enabled(&g->hw)) {
init.flags |= CLK_IS_CRITICAL;
pr_debug("%s was enabled, making read-only\n", desc->name);
}
clk = clk_register(NULL, &g->hw);
if (IS_ERR(clk)) {
kfree(g);
return NULL;
}
return clk;
}
static void r9a06g032_clocks_del_clk_provider(void *data)
{
of_clk_del_provider(data);
}
soc: renesas: r9a06g032-sysctrl: Handle h2mode setting based on USBF presence The CFG_USB[H2MODE] allows to switch the USB configuration. The configuration supported are: - One host and one device or - Two hosts Set CFG_USB[H2MODE] based on the USBF controller (USB device) availability. Signed-off-by: Herve Codina <herve.codina@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230105152257.310642-3-herve.codina@bootlin.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-05 15:22:54 +00:00
static void __init r9a06g032_init_h2mode(struct r9a06g032_priv *clocks)
{
struct device_node *usbf_np = NULL;
u32 usb;
while ((usbf_np = of_find_compatible_node(usbf_np, NULL,
"renesas,rzn1-usbf"))) {
if (of_device_is_available(usbf_np))
break;
}
usb = readl(clocks->reg + R9A06G032_SYSCTRL_USB);
if (usbf_np) {
/* 1 host and 1 device mode */
usb &= ~R9A06G032_SYSCTRL_USB_H2MODE;
of_node_put(usbf_np);
} else {
/* 2 hosts mode */
usb |= R9A06G032_SYSCTRL_USB_H2MODE;
}
writel(usb, clocks->reg + R9A06G032_SYSCTRL_USB);
}
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
static int __init r9a06g032_clocks_probe(struct platform_device *pdev)
{
struct device *dev = &pdev->dev;
struct device_node *np = dev->of_node;
struct r9a06g032_priv *clocks;
struct clk **clks;
struct clk *mclk;
unsigned int i;
clk: renesas: r9a06g032: Improve clock tables Each entry in the clock table specifies a number of individual bits in registers, for contolling clock reset, gaiting, etc. These reg/bit were packed into a u16 to save space. The combined value is difficult to understand when reviewing the clock table entries. Introduce a "struct regbit" which still occupies only 16 bits, but allows the register and bit values to be specified explicitly. Convert all previous uses of u16 for reg/bit into "struct regbit". The bulk of this patch converts the clock table to use struct regbit, making use of the RB() helper macro. The conversion was automated by script, and as a further verification, the compiled binary of the table was compared before/after the change (with objdump -D). The clk_rdesc_set() function now checks for zero reg/bit internally. This allows callers of that function to remove those checks. Signed-off-by: Ralph Siemsen <ralph.siemsen@linaro.org> Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230301215520.828455-5-ralph.siemsen@linaro.org Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2023-03-01 21:55:20 +00:00
struct regbit uart_group_sel[2];
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
int error;
clocks = devm_kzalloc(dev, sizeof(*clocks), GFP_KERNEL);
clks = devm_kcalloc(dev, R9A06G032_CLOCK_COUNT, sizeof(struct clk *),
GFP_KERNEL);
if (!clocks || !clks)
return -ENOMEM;
spin_lock_init(&clocks->lock);
clocks->data.clks = clks;
clocks->data.clk_num = R9A06G032_CLOCK_COUNT;
mclk = devm_clk_get(dev, "mclk");
if (IS_ERR(mclk))
return PTR_ERR(mclk);
clocks->reg = of_iomap(np, 0);
if (WARN_ON(!clocks->reg))
return -ENOMEM;
soc: renesas: r9a06g032-sysctrl: Handle h2mode setting based on USBF presence The CFG_USB[H2MODE] allows to switch the USB configuration. The configuration supported are: - One host and one device or - Two hosts Set CFG_USB[H2MODE] based on the USBF controller (USB device) availability. Signed-off-by: Herve Codina <herve.codina@bootlin.com> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20230105152257.310642-3-herve.codina@bootlin.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-01-05 15:22:54 +00:00
r9a06g032_init_h2mode(clocks);
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
for (i = 0; i < ARRAY_SIZE(r9a06g032_clocks); ++i) {
const struct r9a06g032_clkdesc *d = &r9a06g032_clocks[i];
const char *parent_name = d->source ?
__clk_get_name(clocks->data.clks[d->source - 1]) :
__clk_get_name(mclk);
struct clk *clk = NULL;
switch (d->type) {
case K_FFC:
clk = clk_register_fixed_factor(NULL, d->name,
parent_name, 0,
d->mul, d->div);
break;
case K_GATE:
clk = r9a06g032_register_gate(clocks, parent_name, d);
break;
case K_DIV:
clk = r9a06g032_register_div(clocks, parent_name, d);
break;
case K_BITSEL:
/* keep that selector register around */
uart_group_sel[d->dual.group] = d->dual.sel;
clk = r9a06g032_register_bitsel(clocks, parent_name, d);
break;
case K_DUALGATE:
clk = r9a06g032_register_dualgate(clocks, parent_name,
d,
uart_group_sel[d->dual.group]);
break;
}
clocks->data.clks[d->index] = clk;
}
error = of_clk_add_provider(np, of_clk_src_onecell_get, &clocks->data);
if (error)
return error;
clk: renesas: r9a06g032: Add clock domain support There are several clocks on the r9a06g032 which are currently not enabled in their drivers that can be delegated to clock domain system for power management. Therefore add support for clock domain functionality to the r9a06g032 clock driver. Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-05-28 11:54:27 +00:00
error = devm_add_action_or_reset(dev,
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
r9a06g032_clocks_del_clk_provider, np);
clk: renesas: r9a06g032: Add clock domain support There are several clocks on the r9a06g032 which are currently not enabled in their drivers that can be delegated to clock domain system for power management. Therefore add support for clock domain functionality to the r9a06g032 clock driver. Signed-off-by: Gareth Williams <gareth.williams.jx@renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2019-05-28 11:54:27 +00:00
if (error)
return error;
clk: renesas: r9a06g032: Export function to set dmamux The dmamux register is located within the system controller. Without syscon, we need an extra helper in order to give write access to this register to a dmamux driver. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220427095653.91804-5-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-04-27 09:56:48 +00:00
error = r9a06g032_add_clk_domain(dev);
if (error)
return error;
sysctrl_priv = clocks;
clk: renesas: r9a06g032: Probe possible children The clock controller device on r9a06g032 takes all the memory range that is described as being a system controller. This range contains many different (unrelated?) registers besides the ones belonging to the clock controller, that can necessitate to be accessed from other peripherals. For instance, the dmamux registers are there. The dmamux "device" will be described as a child node of the clock/system controller node, which means we need the top device driver (the clock controller driver in this case) to populate its children manually. In case of error when populating the children, we do not fail the probe on purpose to keep the clk driver up and running. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220427095653.91804-7-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-04-27 09:56:50 +00:00
error = of_platform_populate(np, NULL, NULL, dev);
if (error)
dev_err(dev, "Failed to populate children (%d)\n", error);
clk: renesas: r9a06g032: Export function to set dmamux The dmamux register is located within the system controller. Without syscon, we need an extra helper in order to give write access to this register to a dmamux driver. Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com> Acked-by: Stephen Boyd <sboyd@kernel.org> Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be> Acked-by: Geert Uytterhoeven <geert+renesas@glider.be> Link: https://lore.kernel.org/r/20220427095653.91804-5-miquel.raynal@bootlin.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2022-04-27 09:56:48 +00:00
return 0;
clk: renesas: Renesas R9A06G032 clock driver This provides a clock driver for the Renesas R09A06G032. This uses a structure derived from both the R-Car Gen2 driver as well as the renesas-cpg-mssr driver. Signed-off-by: Michel Pollet <michel.pollet@bp.renesas.com> Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2018-06-14 10:56:34 +00:00
}
static const struct of_device_id r9a06g032_match[] = {
{ .compatible = "renesas,r9a06g032-sysctrl" },
{ }
};
static struct platform_driver r9a06g032_clock_driver = {
.driver = {
.name = "renesas,r9a06g032-sysctrl",
.of_match_table = r9a06g032_match,
},
};
static int __init r9a06g032_clocks_init(void)
{
return platform_driver_probe(&r9a06g032_clock_driver,
r9a06g032_clocks_probe);
}
subsys_initcall(r9a06g032_clocks_init);
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