forked from Minki/linux
367dc18dba
SoC centric clock init for Dove can be used by calling of_clk_init. Use it and get rid of mvebu_clocks_init. Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com> Tested-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Acked-by: Mike Turquette <mturquette@linaro.org> Signed-off-by: Jason Cooper <jason@lakedaemon.net>
399 lines
12 KiB
C
399 lines
12 KiB
C
/*
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* arch/arm/mach-dove/common.c
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*
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* Core functions for Marvell Dove 88AP510 System On Chip
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*
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* This file is licensed under the terms of the GNU General Public
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* License version 2. This program is licensed "as is" without any
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* warranty of any kind, whether express or implied.
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*/
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#include <linux/clk-provider.h>
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#include <linux/dma-mapping.h>
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#include <linux/init.h>
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#include <linux/of.h>
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#include <linux/of_platform.h>
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#include <linux/platform_data/dma-mv_xor.h>
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#include <linux/platform_data/usb-ehci-orion.h>
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#include <linux/platform_device.h>
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#include <asm/hardware/cache-tauros2.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/time.h>
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#include <mach/bridge-regs.h>
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#include <mach/pm.h>
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#include <plat/common.h>
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#include <plat/irq.h>
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#include <plat/time.h>
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#include "common.h"
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/*****************************************************************************
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* I/O Address Mapping
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****************************************************************************/
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static struct map_desc dove_io_desc[] __initdata = {
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{
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.virtual = (unsigned long) DOVE_SB_REGS_VIRT_BASE,
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.pfn = __phys_to_pfn(DOVE_SB_REGS_PHYS_BASE),
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.length = DOVE_SB_REGS_SIZE,
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.type = MT_DEVICE,
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}, {
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.virtual = (unsigned long) DOVE_NB_REGS_VIRT_BASE,
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.pfn = __phys_to_pfn(DOVE_NB_REGS_PHYS_BASE),
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.length = DOVE_NB_REGS_SIZE,
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.type = MT_DEVICE,
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},
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};
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void __init dove_map_io(void)
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{
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iotable_init(dove_io_desc, ARRAY_SIZE(dove_io_desc));
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}
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/*****************************************************************************
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* CLK tree
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****************************************************************************/
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static int dove_tclk;
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static DEFINE_SPINLOCK(gating_lock);
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static struct clk *tclk;
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static struct clk __init *dove_register_gate(const char *name,
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const char *parent, u8 bit_idx)
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{
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return clk_register_gate(NULL, name, parent, 0,
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(void __iomem *)CLOCK_GATING_CONTROL,
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bit_idx, 0, &gating_lock);
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}
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static void __init dove_clk_init(void)
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{
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struct clk *usb0, *usb1, *sata, *pex0, *pex1, *sdio0, *sdio1;
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struct clk *nand, *camera, *i2s0, *i2s1, *crypto, *ac97, *pdma;
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struct clk *xor0, *xor1, *ge, *gephy;
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tclk = clk_register_fixed_rate(NULL, "tclk", NULL, CLK_IS_ROOT,
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dove_tclk);
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usb0 = dove_register_gate("usb0", "tclk", CLOCK_GATING_BIT_USB0);
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usb1 = dove_register_gate("usb1", "tclk", CLOCK_GATING_BIT_USB1);
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sata = dove_register_gate("sata", "tclk", CLOCK_GATING_BIT_SATA);
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pex0 = dove_register_gate("pex0", "tclk", CLOCK_GATING_BIT_PCIE0);
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pex1 = dove_register_gate("pex1", "tclk", CLOCK_GATING_BIT_PCIE1);
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sdio0 = dove_register_gate("sdio0", "tclk", CLOCK_GATING_BIT_SDIO0);
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sdio1 = dove_register_gate("sdio1", "tclk", CLOCK_GATING_BIT_SDIO1);
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nand = dove_register_gate("nand", "tclk", CLOCK_GATING_BIT_NAND);
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camera = dove_register_gate("camera", "tclk", CLOCK_GATING_BIT_CAMERA);
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i2s0 = dove_register_gate("i2s0", "tclk", CLOCK_GATING_BIT_I2S0);
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i2s1 = dove_register_gate("i2s1", "tclk", CLOCK_GATING_BIT_I2S1);
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crypto = dove_register_gate("crypto", "tclk", CLOCK_GATING_BIT_CRYPTO);
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ac97 = dove_register_gate("ac97", "tclk", CLOCK_GATING_BIT_AC97);
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pdma = dove_register_gate("pdma", "tclk", CLOCK_GATING_BIT_PDMA);
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xor0 = dove_register_gate("xor0", "tclk", CLOCK_GATING_BIT_XOR0);
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xor1 = dove_register_gate("xor1", "tclk", CLOCK_GATING_BIT_XOR1);
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gephy = dove_register_gate("gephy", "tclk", CLOCK_GATING_BIT_GIGA_PHY);
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ge = dove_register_gate("ge", "gephy", CLOCK_GATING_BIT_GBE);
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orion_clkdev_add(NULL, "orion_spi.0", tclk);
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orion_clkdev_add(NULL, "orion_spi.1", tclk);
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orion_clkdev_add(NULL, "orion_wdt", tclk);
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orion_clkdev_add(NULL, "mv64xxx_i2c.0", tclk);
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orion_clkdev_add(NULL, "orion-ehci.0", usb0);
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orion_clkdev_add(NULL, "orion-ehci.1", usb1);
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orion_clkdev_add(NULL, "mv643xx_eth_port.0", ge);
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orion_clkdev_add(NULL, "sata_mv.0", sata);
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orion_clkdev_add("0", "pcie", pex0);
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orion_clkdev_add("1", "pcie", pex1);
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orion_clkdev_add(NULL, "sdhci-dove.0", sdio0);
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orion_clkdev_add(NULL, "sdhci-dove.1", sdio1);
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orion_clkdev_add(NULL, "orion_nand", nand);
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orion_clkdev_add(NULL, "cafe1000-ccic.0", camera);
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orion_clkdev_add(NULL, "kirkwood-i2s.0", i2s0);
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orion_clkdev_add(NULL, "kirkwood-i2s.1", i2s1);
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orion_clkdev_add(NULL, "mv_crypto", crypto);
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orion_clkdev_add(NULL, "dove-ac97", ac97);
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orion_clkdev_add(NULL, "dove-pdma", pdma);
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orion_clkdev_add(NULL, MV_XOR_NAME ".0", xor0);
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orion_clkdev_add(NULL, MV_XOR_NAME ".1", xor1);
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}
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/*****************************************************************************
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* EHCI0
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****************************************************************************/
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void __init dove_ehci0_init(void)
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{
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orion_ehci_init(DOVE_USB0_PHYS_BASE, IRQ_DOVE_USB0, EHCI_PHY_NA);
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}
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/*****************************************************************************
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* EHCI1
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****************************************************************************/
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void __init dove_ehci1_init(void)
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{
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orion_ehci_1_init(DOVE_USB1_PHYS_BASE, IRQ_DOVE_USB1);
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}
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/*****************************************************************************
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* GE00
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****************************************************************************/
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void __init dove_ge00_init(struct mv643xx_eth_platform_data *eth_data)
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{
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orion_ge00_init(eth_data, DOVE_GE00_PHYS_BASE,
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IRQ_DOVE_GE00_SUM, IRQ_DOVE_GE00_ERR,
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1600);
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}
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/*****************************************************************************
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* SoC RTC
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****************************************************************************/
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void __init dove_rtc_init(void)
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{
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orion_rtc_init(DOVE_RTC_PHYS_BASE, IRQ_DOVE_RTC);
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}
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/*****************************************************************************
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* SATA
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****************************************************************************/
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void __init dove_sata_init(struct mv_sata_platform_data *sata_data)
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{
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orion_sata_init(sata_data, DOVE_SATA_PHYS_BASE, IRQ_DOVE_SATA);
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}
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/*****************************************************************************
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* UART0
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****************************************************************************/
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void __init dove_uart0_init(void)
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{
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orion_uart0_init(DOVE_UART0_VIRT_BASE, DOVE_UART0_PHYS_BASE,
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IRQ_DOVE_UART_0, tclk);
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}
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/*****************************************************************************
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* UART1
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****************************************************************************/
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void __init dove_uart1_init(void)
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{
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orion_uart1_init(DOVE_UART1_VIRT_BASE, DOVE_UART1_PHYS_BASE,
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IRQ_DOVE_UART_1, tclk);
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}
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/*****************************************************************************
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* UART2
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****************************************************************************/
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void __init dove_uart2_init(void)
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{
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orion_uart2_init(DOVE_UART2_VIRT_BASE, DOVE_UART2_PHYS_BASE,
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IRQ_DOVE_UART_2, tclk);
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}
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/*****************************************************************************
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* UART3
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****************************************************************************/
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void __init dove_uart3_init(void)
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{
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orion_uart3_init(DOVE_UART3_VIRT_BASE, DOVE_UART3_PHYS_BASE,
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IRQ_DOVE_UART_3, tclk);
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}
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/*****************************************************************************
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* SPI
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****************************************************************************/
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void __init dove_spi0_init(void)
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{
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orion_spi_init(DOVE_SPI0_PHYS_BASE);
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}
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void __init dove_spi1_init(void)
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{
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orion_spi_1_init(DOVE_SPI1_PHYS_BASE);
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}
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/*****************************************************************************
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* I2C
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****************************************************************************/
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void __init dove_i2c_init(void)
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{
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orion_i2c_init(DOVE_I2C_PHYS_BASE, IRQ_DOVE_I2C, 10);
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}
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/*****************************************************************************
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* Time handling
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****************************************************************************/
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void __init dove_init_early(void)
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{
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orion_time_set_base(TIMER_VIRT_BASE);
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mvebu_mbus_init("marvell,dove-mbus",
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BRIDGE_WINS_BASE, BRIDGE_WINS_SZ,
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DOVE_MC_WINS_BASE, DOVE_MC_WINS_SZ);
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}
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static int __init dove_find_tclk(void)
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{
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return 166666667;
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}
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void __init dove_timer_init(void)
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{
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dove_tclk = dove_find_tclk();
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orion_time_init(BRIDGE_VIRT_BASE, BRIDGE_INT_TIMER1_CLR,
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IRQ_DOVE_BRIDGE, dove_tclk);
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}
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/*****************************************************************************
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* Cryptographic Engines and Security Accelerator (CESA)
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****************************************************************************/
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void __init dove_crypto_init(void)
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{
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orion_crypto_init(DOVE_CRYPT_PHYS_BASE, DOVE_CESA_PHYS_BASE,
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DOVE_CESA_SIZE, IRQ_DOVE_CRYPTO);
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}
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/*****************************************************************************
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* XOR 0
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****************************************************************************/
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void __init dove_xor0_init(void)
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{
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orion_xor0_init(DOVE_XOR0_PHYS_BASE, DOVE_XOR0_HIGH_PHYS_BASE,
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IRQ_DOVE_XOR_00, IRQ_DOVE_XOR_01);
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}
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/*****************************************************************************
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* XOR 1
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****************************************************************************/
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void __init dove_xor1_init(void)
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{
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orion_xor1_init(DOVE_XOR1_PHYS_BASE, DOVE_XOR1_HIGH_PHYS_BASE,
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IRQ_DOVE_XOR_10, IRQ_DOVE_XOR_11);
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}
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/*****************************************************************************
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* SDIO
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****************************************************************************/
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static u64 sdio_dmamask = DMA_BIT_MASK(32);
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static struct resource dove_sdio0_resources[] = {
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{
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.start = DOVE_SDIO0_PHYS_BASE,
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.end = DOVE_SDIO0_PHYS_BASE + 0xff,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IRQ_DOVE_SDIO0,
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.end = IRQ_DOVE_SDIO0,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device dove_sdio0 = {
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.name = "sdhci-dove",
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.id = 0,
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.dev = {
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.dma_mask = &sdio_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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},
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.resource = dove_sdio0_resources,
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.num_resources = ARRAY_SIZE(dove_sdio0_resources),
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};
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void __init dove_sdio0_init(void)
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{
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platform_device_register(&dove_sdio0);
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}
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static struct resource dove_sdio1_resources[] = {
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{
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.start = DOVE_SDIO1_PHYS_BASE,
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.end = DOVE_SDIO1_PHYS_BASE + 0xff,
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.flags = IORESOURCE_MEM,
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}, {
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.start = IRQ_DOVE_SDIO1,
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.end = IRQ_DOVE_SDIO1,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device dove_sdio1 = {
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.name = "sdhci-dove",
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.id = 1,
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.dev = {
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.dma_mask = &sdio_dmamask,
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.coherent_dma_mask = DMA_BIT_MASK(32),
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},
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.resource = dove_sdio1_resources,
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.num_resources = ARRAY_SIZE(dove_sdio1_resources),
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};
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void __init dove_sdio1_init(void)
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{
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platform_device_register(&dove_sdio1);
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}
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void __init dove_setup_cpu_wins(void)
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{
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/*
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* The PCIe windows will no longer be statically allocated
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* here once Dove is migrated to the pci-mvebu driver.
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*/
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mvebu_mbus_add_window_remap_flags("pcie0.0",
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DOVE_PCIE0_IO_PHYS_BASE,
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DOVE_PCIE0_IO_SIZE,
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DOVE_PCIE0_IO_BUS_BASE,
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MVEBU_MBUS_PCI_IO);
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mvebu_mbus_add_window_remap_flags("pcie1.0",
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DOVE_PCIE1_IO_PHYS_BASE,
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DOVE_PCIE1_IO_SIZE,
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DOVE_PCIE1_IO_BUS_BASE,
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MVEBU_MBUS_PCI_IO);
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mvebu_mbus_add_window_remap_flags("pcie0.0",
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DOVE_PCIE0_MEM_PHYS_BASE,
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DOVE_PCIE0_MEM_SIZE,
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MVEBU_MBUS_NO_REMAP,
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MVEBU_MBUS_PCI_MEM);
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mvebu_mbus_add_window_remap_flags("pcie1.0",
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DOVE_PCIE1_MEM_PHYS_BASE,
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DOVE_PCIE1_MEM_SIZE,
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MVEBU_MBUS_NO_REMAP,
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MVEBU_MBUS_PCI_MEM);
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mvebu_mbus_add_window("cesa", DOVE_CESA_PHYS_BASE,
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DOVE_CESA_SIZE);
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mvebu_mbus_add_window("bootrom", DOVE_BOOTROM_PHYS_BASE,
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DOVE_BOOTROM_SIZE);
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mvebu_mbus_add_window("scratchpad", DOVE_SCRATCHPAD_PHYS_BASE,
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DOVE_SCRATCHPAD_SIZE);
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}
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void __init dove_init(void)
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{
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pr_info("Dove 88AP510 SoC, TCLK = %d MHz.\n",
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(dove_tclk + 499999) / 1000000);
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#ifdef CONFIG_CACHE_TAUROS2
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tauros2_init(0);
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#endif
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dove_setup_cpu_wins();
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/* Setup root of clk tree */
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dove_clk_init();
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/* internal devices that every board has */
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dove_rtc_init();
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dove_xor0_init();
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dove_xor1_init();
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}
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void dove_restart(char mode, const char *cmd)
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{
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/*
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* Enable soft reset to assert RSTOUTn.
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*/
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writel(SOFT_RESET_OUT_EN, RSTOUTn_MASK);
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/*
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* Assert soft reset.
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*/
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writel(SOFT_RESET, SYSTEM_SOFT_RESET);
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while (1)
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;
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}
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