Commit Graph

3642 Commits

Author SHA1 Message Date
Rajendra Nayak
081ba80206 clk: qcom: Add rcg ops to return floor value closest to the requested rate
The default behaviour with clk_rcg2_ops is for the
clk_round_rate()/clk_set_rate() to return/set a ceil clock
rate closest to the requested rate by looking up the corresponding
frequency table.
However, we do have some instances (mainly sdcc on various platforms)
of clients expecting a clk_set_rate() to set a floor value instead.
Add a new clk_rcg2_floor_ops to handle this for such specific
rcg instances

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Ritesh Harjani <riteshh@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-23 11:00:05 -08:00
Geert Uytterhoeven
9388093db4 ARM: 8631/1: clkdev: Detect errors in clk_hw_register_clkdev() for mass registration
Unlike clk_register_clkdev(), clk_hw_register_clkdev() doesn't check for
passed error objects from a previous registration call. Hence the caller
of clk_hw_register_*() has to check for errors before calling
clk_hw_register_clkdev*().

Make clk_hw_register_clkdev() more similar to clk_register_clkdev() by
adding this error check, removing the burden from callers that do mass
registration.

Fixes: e4f1b49bda ("clkdev: Add clk_hw based registration APIs")
Fixes: 944b9a41e0 ("clk: ls1x: Migrate to clk_hw based OF and registration APIs")
Fixes: 44ce9a9ae9 ("MIPS: TXx9: Convert to Common Clock Framework")
Fixes: f48d947a16 ("clk: clps711x: Migrate to clk_hw based OF and registration APIs")
Fixes: b4626a7f48 ("CLK: Add Loongson1C clock support")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2016-11-22 11:45:28 +00:00
Stephen Boyd
c705d22b64 Exynos5433 SoC related fixes:
- addition of missing documentation and DT properties for the CMU_AUD
    block source clocks,
  - correction of CMU_FSYS parent clock definition,
  - marking as critical clocks which have to be enabled in order
    to access control registers of child CMUs.
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Merge tag 'clk-v4.10-exynos5433' of git://linuxtv.org/snawrocki/samsung into clk-next

Pull Exynos5433 SoC updates from Sylwester Nawrocki:

 - addition of missing documentation and DT properties for the CMU_AUD
   block source clocks,
 - correction of CMU_FSYS parent clock definition,
 - marking as critical clocks which have to be enabled in order
   to access control registers of child CMUs.

* tag 'clk-v4.10-exynos5433' of git://linuxtv.org/snawrocki/samsung:
  clk: exynos5433: Mark some clocks as critical
  clk: exynos5433: Add documentation for the audio block parent clocks
  clk: exynos5433: Fix parent clocks for FSYS block
2016-11-21 17:27:02 -08:00
Chen-Yu Tsai
95881a54b8 clk: sunxi-ng: sun6i-a31: Enable PLL-MIPI LDOs when ungating it
The PLL-MIPI clock is somewhat special as it has its own LDOs which
need to be turned on for this PLL to actually work and output a clock
signal.

Add the 2 LDO enable bits to the gate bits. This fixes issues with
the TCON not sending vblank interrupts when the tcon and dot clock are
indirectly clocked from the PLL-MIPI clock.

Fixes: c6e6c96d8f ("clk: sunxi-ng: Add A31/A31s clocks")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-11-21 19:50:49 +01:00
Olof Johansson
04c0d567d3 i.MX non-critical fixes for 4.10:
- A series from Vladimir to fix broken i.MX31 DT clock initialization.
    As i.MX31 DT support is still not quite complete, the changes are
    tested on qemu kzm target and mx31lite board with simple written DTS
    files.
  - A fix for CompuLab's sbc-fx6 baseboard to remove wrong fec pinctrl
    setting.
  - A DTS correction for i.MX6QP to reflect the change that the gate of
    LDB clock has been moved before the divider.
  - An imx7d-pinfunc fix for UART pinmux defines
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Merge tag 'imx-fix-nc-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into next/fixes-non-critical

i.MX non-critical fixes for 4.10:
 - A series from Vladimir to fix broken i.MX31 DT clock initialization.
   As i.MX31 DT support is still not quite complete, the changes are
   tested on qemu kzm target and mx31lite board with simple written DTS
   files.
 - A fix for CompuLab's sbc-fx6 baseboard to remove wrong fec pinctrl
   setting.
 - A DTS correction for i.MX6QP to reflect the change that the gate of
   LDB clock has been moved before the divider.
 - An imx7d-pinfunc fix for UART pinmux defines

* tag 'imx-fix-nc-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  ARM: dts: imx6q-cm-fx6: fix fec pinctrl
  ARM: dts: imx7d-pinfunc: fix UART pinmux defines
  ARM: dts: imx6qp: correct LDB clock inputs
  ARM: clk: imx31: properly init clocks for machines with DT
  clk: imx31: fix rewritten input argument of mx31_clocks_init()
  ARM: dts: imx31: move CCM device node to AIPS2 bus devices
  ARM: dts: imx31: fix clock control module interrupts description

Signed-off-by: Olof Johansson <olof@lixom.net>
2016-11-18 09:56:49 -08:00
Marek Szyprowski
37bf4ab84b clk: exynos5433: Mark some clocks as critical
Some parent clocks of the Exynos5433 CMUs must be always enabled to access
any register in the given CMU or devices connected to it. For the time
being, until a proper solution based on runtime PM is applied, mark those
clocks as critical (instead of ignore unused) to prevent disabling them.

Reported-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2016-11-18 13:55:51 +01:00
Stephen Boyd
9baabf4341 clk: renesas: Updates for v4.10 (take three)
- CSI2 and VIN clocks for R-Car M3-W,
   - Clock drivers for new RZ/G1M and RZ/G1E SoCs,
   - Minor bug fix for R-Car H3.
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Merge tag 'clk-renesas-for-v4.10-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next

Pull more clk driver updates from Geert Uytterhoeven:

  - CSI2 and VIN clocks for R-Car M3-W,
  - Clock drivers for new RZ/G1M and RZ/G1E SoCs,
  - Minor bug fix for R-Car H3.

* tag 'clk-renesas-for-v4.10-tag3' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
  clk: renesas: cpg-mssr: Add R8A7745 support
  clk: renesas: cpg-mssr: Add R8A7743 support
  clk: renesas: cpg-mssr: Add common R-Car Gen2 support
  clk: renesas: r8a7795: Fix HDMI parent clock
  clk: renesas: r8a7796: Add VIN clocks
  clk: renesas: r8a7796: Add CSI2 clocks
2016-11-17 15:07:23 -08:00
Stephen Boyd
54fd1b3bc4 clk: renesas: Updates for v4.10 (take two)
- Add R-Car RST driver for obtaining mode pin state, and move the
     related functionality from platform code to DT,
   - Add r8a7743 and r8a7745 CPG Core Clock Definitions.
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Merge tag 'clk-renesas-for-v4.10-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next

Pull Renesas clk driver updates from Geerty Uytterhoeven:

  - Add R-Car RST driver for obtaining mode pin state, and move the
    related functionality from platform code to DT,
  - Add r8a7743 and r8a7745 CPG Core Clock Definitions.

The commits here are intermingled with arm-soc material because
of the hard dependency we're breaking between mach code and
driver code. We're replacing that with a driver dependency
between the soc driver and the clk driver.

* tag 'clk-renesas-for-v4.10-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers: (25 commits)
  clk: renesas: Add r8a7745 CPG Core Clock Definitions
  clk: renesas: Add r8a7743 CPG Core Clock Definitions
  clk: renesas: rcar-gen2: Remove obsolete rcar_gen2_clocks_init()
  clk: renesas: r8a7779: Remove obsolete r8a7779_clocks_init()
  clk: renesas: r8a7778: Remove obsolete r8a7778_clocks_init()
  ARM: shmobile: rcar-gen2: Stop passing mode pins state to clock driver
  ARM: shmobile: r8a7779: Stop passing mode pins state to clock driver
  ARM: shmobile: r8a7778: Stop passing mode pins state to clock driver
  clk: renesas: rcar-gen3-cpg: Remove obsolete rcar_gen3_read_mode_pins()
  clk: renesas: r8a7796: Obtain mode pin values from R-Car RST driver
  clk: renesas: r8a7795: Obtain mode pin values from R-Car RST driver
  clk: renesas: rcar-gen2: Obtain mode pin values using RST driver
  clk: renesas: r8a7779: Obtain mode pin values from R-Car RST driver
  clk: renesas: r8a7778: Obtain mode pin values using R-Car RST driver
  arm64: renesas: r8a7796 dtsi: Add device node for RST module
  arm64: renesas: r8a7795 dtsi: Add device node for RST module
  ARM: dts: r8a7794: Add device node for RST module
  ARM: dts: r8a7793: Add device node for RST module
  ARM: dts: r8a7792: Add device node for RST module
  ARM: dts: r8a7791: Add device node for RST module
  ...
2016-11-17 13:31:07 -08:00
Marek Szyprowski
9a81188e4c clk: exynos5433: Fix parent clocks for FSYS block
The proper parent clock for FSYS block is "aclk_fsys_200"
according to the Exynos5433 reference manual.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
2016-11-17 13:58:37 +01:00
Stephen Boyd
30e1db86ba clk: sunxi-ng: Mark structs static and cleanup spaces
Some checkpatch warnings about spaces were missed and we didn't
mark two structs as static. Clean it up.

Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-16 11:27:28 -08:00
Stephen Boyd
38320181c7 Allwinner clock changes for 4.10
The usual patches from us, but most notably the introduction of the A64
 clocks unit.
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Merge tag 'sunxi-clk-for-4.10' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into clk-next

Pull Allwinner clock changes from Maxime Ripard:

The usual patches from us, but most notably the introduction of the A64
clocks unit.

* tag 'sunxi-clk-for-4.10' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  clk: sunxi-ng: sun8i-h3: Set CLK_SET_RATE_PARENT for audio module clocks
  clk: sunxi-ng: sun8i-a23: Set CLK_SET_RATE_PARENT for audio module clocks
  clk: sunxi-ng: Add A64 clocks
  clk: sunxi-ng: Implement minimum for multipliers
  clk: sunxi-ng: Add minimums for all the relevant structures and clocks
  clk: sunxi-ng: Finish to convert to structures for arguments
  clk: sunxi-ng: Remove the use of rational computations
  clk: sunxi-ng: Rename the internal structures
  clk: sunxi: mod0: improve function-level documentation
2016-11-16 11:19:20 -08:00
Stephen Boyd
c284a7ba72 i.MX clock updates for 4.10:
- A patch series to fix the long standing issue with glitchy parent
    mux of ldb_di_clk, which can hang up LVDS display when ipu_di_clk
    is sourced from ldb_di_clk.
  - A patch to add imx6ull clock support on top of imx6ul clock driver.
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Merge tag 'imx-clk-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into clk-next

Pull i.MX clock updates from Shawn Guo:

 - A patch series to fix the long standing issue with glitchy parent
   mux of ldb_di_clk, which can hang up LVDS display when ipu_di_clk
   is sourced from ldb_di_clk.
 - A patch to add imx6ull clock support on top of imx6ul clock driver.

* tag 'imx-clk-4.10' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  clk: imx: clk-imx6ul: add clk support for imx6ull
  clk: imx6: Fix procedure to switch the parent of LDB_DI_CLK
  clk: imx6: Make the LDB_DI0 and LDB_DI1 clocks read-only
  clk: imx6: Mask mmdc_ch1 handshake for periph2_sel and mmdc_ch1_axi_podf
2016-11-16 11:16:07 -08:00
Stephen Boyd
977f0ab058 Merge branch 'clk-fixes' into clk-next
* clk-fixes:
  clk: efm32gg: Pass correct type to hw provider registration
  clk: berlin: Pass correct type to hw provider registration
  clk: sunxi: Fix M factor computation for APB1
  clk: sunxi-ng: sun6i-a31: Force AHB1 clock to use PLL6 as parent
2016-11-16 11:15:58 -08:00
Stephen Boyd
c8616671af Allwinner clock fixes for 4.9
Two fixes, one for the old clock code, one for the new implementation.
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Merge tag 'sunxi-clk-fixes-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux into clk-fixes

Pull Allwinner clock fixes from Maxime Ripard:

Two fixes, one for the old clock code, one for the new implementation.

* tag 'sunxi-clk-fixes-for-4.9' of https://git.kernel.org/pub/scm/linux/kernel/git/mripard/linux:
  clk: sunxi: Fix M factor computation for APB1
  clk: sunxi-ng: sun6i-a31: Force AHB1 clock to use PLL6 as parent
2016-11-16 11:10:58 -08:00
Stephen Boyd
bdfdabfedc clk: efm32gg: Pass correct type to hw provider registration
Dan Carpenter reports that we're passing a pointer to a pointer
here when we should just be passing a pointer. Pass the right
pointer so that the of_clk_hw_onecell_get() sees the appropriate
data pointer on its end.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Stephen Boyd <stephen.boyd@linaro.org>
Cc: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Fixes: 9337631f52 ("clk: efm32gg: Migrate to clk_hw based OF and registration APIs")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-16 11:08:55 -08:00
Stephen Boyd
3ca0b51dec clk: berlin: Pass correct type to hw provider registration
Dan Carpenter reports that we're passing a pointer to a pointer
here when we should just be passing a pointer. Pass the right
pointer so that the of_clk_hw_onecell_get() sees the appropriate
data pointer on its end.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Cc: Jisheng Zhang <jszhang@marvell.com>
Cc: Alexandre Belloni <alexandre.belloni@free-electrons.com>
Cc: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Cc: Stephen Boyd <stephen.boyd@linaro.org>
Fixes: f6475e2982 ("clk: berlin: Migrate to clk_hw based registration and OF APIs")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-16 11:04:17 -08:00
Shawn Lin
e44dde2794 clk: rockchip: add clock controller for rk1108
Add the clock tree definition and driver for rk1108 SoC.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Tested-by: Jacob Chen <jacob2.chen@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-16 12:37:37 +01:00
Jianqun Xu
9c496033b3 clk: rockchip: fix copy-paste error in rk3399 testclk
Fix RK3368_* to RK3399_* for rk3399 clk_test clock.

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-16 11:57:29 +01:00
Leo Yan
9a881bc55d clk: Hi6220: enable stub clock driver for ARCH_HISI
In current kernel config 'CONFIG_STUB_CLK_HI6220' is disabled by
default, as result stub clock driver has not been registered and
CPUFreq driver cannot work.

This patch is to enable stub clock driver in config for ARCH_HISI.

Reported-by: Dietmar Eggemann <dietmar.eggemann@arm.com>
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-14 18:40:47 -08:00
Stephen Boyd
09d5dc586b PLL initialization for PLLs having both an integral and fractional mode
(rk3036, rk3399) does now take into account the mode that the PLL is
 actually running at.
 As always also some additional and optimized PLL rates for rk3066 and
 rk3399, some additional clock ids for rk3066 and some additional clocks
 on rk3399 are now sucessfully handled inside their respective driver.
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Merge tag 'v4.10-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next

Pull Rockchip clk driver updates from Heiko Stuebner:

PLL initialization for PLLs having both an integral and fractional mode
(rk3036, rk3399) does now take into account the mode that the PLL is
actually running at.

As always also some additional and optimized PLL rates for rk3066 and
rk3399, some additional clock ids for rk3066 and some additional clocks
on rk3399 are now sucessfully handled inside their respective driver.

* tag 'v4.10-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: Ignore frac divisor for PLL equivalence when it's unused
  clk: rockchip: remove more CLK_IGNORE_UNUSED for rk3399 clocktree
  clk: rockchip: add 400MHz to rk3066 clock rates table
  clk: rockchip: optimize 800MHz and 1GHz pll rates on RK3399
  clk: rockchip: Use clock ids for cpu and peri clocks on rk3066
  clk: rockchip: Add binding ids for cpu and peri clocks on rk3066
  clk: rockchip: add 533.25MHz to rk3399 clock rates table
2016-11-14 18:38:35 -08:00
Stephen Boyd
a4efb09030 clk: renesas: Updates for v4.10 (take one)
- SYS-DMAC, (H)SCIF, I2C, DRIF, and graphics related clocks for R-Car
     M3-W,
   - Minor fixes and cleanups.
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Merge tag 'clk-renesas-for-v4.10-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next

Pull Renesas clk driver updates from Geert Uytterhoeven:

  - SYS-DMAC, (H)SCIF, I2C, DRIF, and graphics related clocks for R-Car
    M3-W,
  - Minor fixes and cleanups.

* tag 'clk-renesas-for-v4.10-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
  clk: renesas: r8a7796: Add DU and LVDS clocks
  clk: renesas: r8a7796: Add VSP clocks
  clk: renesas: r8a7796: Add FCP clocks
  clk: renesas: cpg-mssr: Remove bogus commas from error messages
  clk: renesas: r8a7796: Add DRIF clock
  clk: renesas: cpg-mssr: Fix inverted debug check
  clk: renesas: rcar-gen3-cpg: Always use readl()/writel()
  clk: renesas: cpg-mssr: Always use readl()/writel()
  clk: renesas: r8a7796: Add I2C clocks
  clk: renesas: r8a7796: Add HSCIF clocks
  clk: renesas: r8a7796: Add SCIF clocks
  clk: renesas: r8a7796: Add SYS-DMAC clocks
2016-11-14 18:35:42 -08:00
Bai Ping
73cd5e53ca clk: imx: clk-imx6ul: add clk support for imx6ull
imx6ull is the derived SoC from imx6ul

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Bai Ping <ping.bai@nxp.com>
Signed-off-by: Peter Chen <peter.chen@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
2016-11-15 08:55:36 +08:00
Stephen Boyd
c60df0a42b Merge branch 'clk-hisi' into clk-next
* clk-hisi:
  clk: hisilicon: add CRG driver for Hi3516CV300 SoC
  clk: hisilicon: add CRG driver for Hi3798CV200 SoC
2016-11-14 14:25:11 -08:00
Pan Wen
c80dfd9bf5 clk: hisilicon: add CRG driver for Hi3516CV300 SoC
Add CRG driver for Hi3516CV300 SoC. CRG(Clock and Reset
Generator) module generates clock and reset signals used
by other module blocks on SoC.

Signed-off-by: Pan Wen <wenpan@hisilicon.com>
Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-14 12:04:39 -08:00
Elaine Zhang
a554bb5fb0 clk: rockchip: validity should be checked prior to cpu clock rate change
If validity is not checked prior to clock rate change, clk_set_rate(
cpu_clk, unsupported_rate) will return success, but the real clock rate
change operation is prohibited in post clock change event. Alough post
clock change event will report error due to unsupported clock rate is
set, but this error message is ignored by clock framework.

Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Tested-by: Rocky Hao <rocky.hao@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-14 12:20:53 +01:00
Jiancheng Xue
707d33cb0b clk: hisilicon: add CRG driver for Hi3798CV200 SoC
Add CRG driver for Hi3798CV200 SoC. CRG(Clock and Reset
Generator) module generates clock and reset signals used
by other module blocks on SoC.

Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-11 15:43:49 -08:00
Chen-Yu Tsai
0f6f9302b8 clk: sunxi-ng: sun8i-h3: Set CLK_SET_RATE_PARENT for audio module clocks
The audio module clocks are supposed to be set according to the sample
rate of the audio stream. The audio PLL provides the clock signal for
these module clocks, and only it is freely tunable.

Set CLK_SET_RATE_PARENT for the audio module clocks so their users can
properly tune the clock rate.

Fixes: 0577e4853b ("clk: sunxi-ng: Add H3 clocks")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-11-11 21:47:41 +01:00
Chen-Yu Tsai
937ff9ded8 clk: sunxi-ng: sun8i-a23: Set CLK_SET_RATE_PARENT for audio module clocks
The audio module clocks are supposed to be set according to the sample
rate of the audio stream. The audio PLL provides the clock signal for
these module clocks, and only it is freely tunable.

Set CLK_SET_RATE_PARENT for the audio module clocks so their users can
properly tune the clock rate.

Fixes: 5690879d93 ("clk: sunxi-ng: Add A23 CCU")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-11-11 21:47:36 +01:00
Stephen Boyd
81ab3279c5 Merge branch 'clk-qcom-rpm' into clk-next
* clk-qcom-rpm:
  clk: qcom: Add support for RPM Clocks
  clk: qcom: Add support for SMD-RPM Clocks
  clk: qcom: Always add factor clock for xo clocks
2016-11-10 16:50:16 -08:00
Georgi Djakov
872f91b5ea clk: qcom: Add support for RPM Clocks
This adds initial support for clocks controlled by the Resource
Power Manager (RPM) processor on some Qualcomm SoCs, which use
the qcom_rpm driver to communicate with RPM.
Such platforms are apq8064 and msm8960.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-10 16:46:56 -08:00
Georgi Djakov
00f64b5887 clk: qcom: Add support for SMD-RPM Clocks
This adds initial support for clocks controlled by the Resource
Power Manager (RPM) processor on some Qualcomm SoCs, which use
the qcom_smd_rpm driver to communicate with RPM.
Such platforms are msm8916, apq8084 and msm8974.

The RPM is a dedicated hardware engine for managing the shared
SoC resources in order to keep the lowest power profile. It
communicates with other hardware subsystems via shared memory
and accepts clock requests, aggregates the requests and turns
the clocks on/off or scales them on demand.

This driver is based on the codeaurora.org driver:
https://www.codeaurora.org/cgit/quic/la/kernel/msm-3.10/tree/drivers/clk/qcom/clock-rpm.c

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
[sboyd@codeaurora.org: Remove useless braces for single line if]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-10 16:37:55 -08:00
Georgi Djakov
54823af9cd clk: qcom: Always add factor clock for xo clocks
Currently the RPM/RPM-SMD clock drivers do not register the xo clocks,
so we should always add factor clock. When we later add xo clocks support
into the drivers, we should update this function to skip registration.
By doing so we avoid any DT dependencies.

Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-10 16:36:19 -08:00
Stephen Boyd
b0e031c94a Merge branch 'clk-qcom-8994' into clk-next
* clk-qcom-8994:
  clk: qcom: Add support for msm8994 global clock controller
  dt-bindings: qcom: clocks: Add msm8994 clock bindings
2016-11-10 15:47:56 -08:00
Bastian Köcher
aec89f78cf clk: qcom: Add support for msm8994 global clock controller
The clock definition was ported from the Google 3.10 kernel tree to
work with the latest kernel.

Signed-off-by: Bastian Köcher <mail@kchr.de>
[jeremymc@redhat.com: created new commit of just dt-bindings]
Signed-off-by: Jeremy McNicoll <jeremymc@redhat.com>
[sboyd@codeaurora.org: Tidy up commit text and Kconfig help]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-10 15:45:42 -08:00
Wei Yongjun
6f877e79a7 clk: tegra: dfll: Use builtin_platform_driver to simplify the code
Use the builtin_platform_driver() macro to make the code simpler.

Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-10 14:08:46 -08:00
Sergei Shtylyov
9127d54bb8 clk: renesas: cpg-mssr: Add R8A7745 support
Add RZ/G1E (R8A7745) Clock Pulse Generator / Module Standby and Software
Reset support, using the CPG/MSSR driver core and the common R-Car Gen2
(and RZ/G) code.

Based on the proof-of-concept R8A7791 CPG/MSSR patch by Geert
Uytterhoeven <geert+renesas@glider.be>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-10 15:29:30 +01:00
Sergei Shtylyov
c0b2d75d2a clk: renesas: cpg-mssr: Add R8A7743 support
Add RZ/G1M (R8A7743) Clock Pulse Generator / Module Standby and Software
Reset support, using the CPG/MSSR driver core and the common R-Car Gen2
(and RZ/G) code.

Based on the proof-of-concept R8A7791 CPG/MSSR patch by Geert
Uytterhoeven <geert+renesas@glider.be>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-10 15:29:28 +01:00
Sergei Shtylyov
4683893574 clk: renesas: cpg-mssr: Add common R-Car Gen2 support
Add the common R-Car Gen2 (and RZ/G) Clock Pulse Generator / Module
Standby and Software Reset support code, using the CPG/MSSR driver
core.

Based on the proof-of-concept R8A7791 CPG/MSSR patch by Geert
Uytterhoeven <geert+renesas@glider.be>.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-10 15:29:25 +01:00
Stephen Boyd
cbf2e548ca clk: qcom: ipq806x: Fix board clk rates
The clocks on these boards run at 25 MHz, not 19.2 and 27 like
other platforms. Unfortunately I copy/pasted from other similar
SoCs but forgot this one is different. Fix it.

Fixes: a085f877a8 ("clk: qcom: Move cxo/pxo/xo into dt files")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-09 17:10:32 -08:00
Stephen Boyd
84558ff770 clk: pxa: Use __iomem properly and staticize lock variable
This function is passed an __iomem pointer but we use a u32
pointer instead which makes checkers like spare complain.
Furthermore, "lock" is a pretty poor variable name for a string
that will go into lockdep reports and the symbol isn't marked
static. Cleanup all this.

Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-09 12:43:19 -08:00
Uwe Kleine-König
295face99b clk: gate: fix coding style
The : of the ?: operator should have a leading space.

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
[sboyd@codeaurora.org: Also remove useless parenthesis]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-09 12:05:50 -08:00
Arnd Bergmann
2517b32bd9 clk: pxa: fix pxa2xx_determine_rate return
The new pxa2xx_determine_rate() function seems lacking in a few
regards:

- For an exact match or no match at all, the rate is uninitialized
  as reported by gcc -Wmaybe-unintialized:
   drivers/clk/pxa/clk-pxa.c: In function 'pxa2xx_determine_rate':
   drivers/clk/pxa/clk-pxa.c:243:5: error: 'rate' may be used uninitialized in this function

- If we get a non-exact match, the req->rate output is never set
  to the actual rate but remains at the requested rate.

- We should not attempt to print a rate if none could be found

This rewrites the logic accordingly.

Fixes: 9fe6942950 ("clk: pxa: transfer CPU clock setting from pxa2xx-cpufreq")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-09 12:04:33 -08:00
Shunli Wang
8c1ee96a2f reset: mediatek: Add MT2701 reset driver
In infrasys and perifsys, there are many reset
control bits for kinds of modules. These bits are
used as actual reset controllers to be registered
into kernel's generic reset controller framework.

Signed-off-by: Shunli Wang <shunli.wang@mediatek.com>
Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Signed-off-by: Erin Lo <erin.lo@mediatek.com>
Tested-by: John Crispin <blogic@openwrt.org>
Acked-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-08 15:59:51 -08:00
Shunli Wang
e986211827 clk: mediatek: Add MT2701 clock support
Add MT2701 clock support, include topckgen, apmixedsys,
infracfg, pericfg and subsystem clocks.

Signed-off-by: Shunli Wang <shunli.wang@mediatek.com>
Signed-off-by: James Liao <jamesjj.liao@mediatek.com>
Signed-off-by: Erin Lo <erin.lo@mediatek.com>
Tested-by: John Crispin <blogic@openwrt.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-08 15:59:49 -08:00
Arnd Bergmann
e0a3862c14 clk: pxa mark dummy helper as 'inline'
The dummy_clk_set_parent function is marked as 'static' but is
no longer referenced from the pxa25x clk driver after the last use
of the RATE_RO_OPS() macro is gone from this file, causing a
harmless build warning:

In file included from drivers/clk/pxa/clk-pxa25x.c:24:0:
drivers/clk/pxa/clk-pxa.h:146:12: error: 'dummy_clk_set_parent' defined but not used [-Werror=unused-function]

This marks the functon as 'inline', which lets the compiler simply
drop it when it gets referenced.

Fixes: 9fe6942950 ("clk: pxa: transfer CPU clock setting from pxa2xx-cpufreq")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-08 14:46:56 -08:00
Takeshi Kihara
0a30284b9f clk: renesas: r8a7795: Fix HDMI parent clock
Correct HDMI parent clock so that the rate of the
HDMI clock is 1/4 rather than 1/2 of the rate of PLL1
as per the v0.52 (Jun, 15) manual.

Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-07 15:16:18 +01:00
Niklas Söderlund
e6e3558626 clk: renesas: r8a7796: Add VIN clocks
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-07 15:16:18 +01:00
Niklas Söderlund
5fccac6d94 clk: renesas: r8a7796: Add CSI2 clocks
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-07 15:16:17 +01:00
Julius Werner
bf92384b6d clk: rockchip: Ignore frac divisor for PLL equivalence when it's unused
Rockchip RK3399 PLLs can be used in two separate modes: integral and
fractional. We can select between these two modes with the unambiguously
named DSMPD bit.

During boot, we check all PLL settings to confirm that they match our
PLL table for that frequency, and reinitialize the PLLs where they
don't. The settings checked for this include the fractional divider
field that is only used in fractional mode, even if we're in integral
mode (DSMPD = 1) and that field has no effect.

This patch changes the check to only compare the fractional divider if
we're actually in fractional mode. This way, we won't reinitialize the
PLL in cases where there's absolutely no reason for that, which may
avoid glitching child clocks that should better not be glitched (e.g.
PWM regulators).

Signed-off-by: Julius Werner <jwerner@chromium.org>

[cloned the fix to the pretty similar rk3036 pll]
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-05 23:16:29 +01:00
Jianqun Xu
161baaea7c clk: rockchip: remove more CLK_IGNORE_UNUSED for rk3399 clocktree
Optimize rk3399 clocktree by removing CLK_IGNORE_UNUSED of some clocks.

clocks will managered by usb:
- clk_usbphy0_480m_src
- clk_usbphy1_480m_src
- clk_usbphy_480m

clocks will be managered by pvtm:
- clk_pvtm_core_l
- clk_pvtm_core_b
- clk_pvtm_ddr

clocks will be managered by dfi:
- pclk_ddr_mon
- clk_dfimon0_timer
- clk_dfimon1_timer
- aclk_dcf
- pclk_dcf

Signed-off-by: Jianqun Xu <jay.xu@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-05 23:12:55 +01:00
Paweł Jarosz
82e56393a8 clk: rockchip: add 400MHz to rk3066 clock rates table
We need this to init PLL_CPLL to 400MHz at boot.

Signed-off-by: Paweł Jarosz <paweljarosz3691@gmail.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
2016-11-05 23:11:01 +01:00
Paul Gortmaker
172ff5a22d clk: ti: make clk-dra7-atl explicitly non-modular
The Kconfig currently controlling compilation of this code is:

arch/arm/mach-omap2/Kconfig:config SOC_DRA7XX
arch/arm/mach-omap2/Kconfig:    bool "TI DRA7XX"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tags etc. since all that information
is already contained at the top of the file in the comments.

Cc: Tero Kristo <t-kristo@ti.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Peter Ujfalusi <peter.ujfalusi@ti.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-omap@vger.kernel.org
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-04 13:34:14 -07:00
Paul Gortmaker
33996b029d clk: tegra: make clk-tegra124-dfll-fcpu explicitly non-modular
The Kconfig currently controlling compilation of this code is:

arch/arm/mach-tegra/Kconfig:config ARCH_TEGRA_124_SOC
arch/arm/mach-tegra/Kconfig:    bool "Enable support for Tegra124 family"

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

Since module_init translates to device_initcall in the non-modular
case, the init ordering remains unchanged with this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tags etc. since all that information
is already contained at the top of the file in the comments.

Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Alexandre Courbot <gnurou@gmail.com>
Cc: Aleksandr Frid <afrid@nvidia.com>
Cc: Paul Walmsley <pwalmsley@nvidia.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-tegra@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-04 13:33:11 -07:00
Paul Gortmaker
188e8719c5 clk: mvebu: make ap806-system-controller explicitly non-modular
The Kconfig currently controlling compilation of this code is:

drivers/clk/mvebu/Kconfig:config ARMADA_AP806_SYSCON
drivers/clk/mvebu/Kconfig:      bool

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-04 13:32:58 -07:00
Paul Gortmaker
7acf751ea5 clk: mvebu: make cp110-system-controller explicitly non-modular
The Kconfig currently controlling compilation of this code is:

drivers/clk/mvebu/Kconfig:config ARMADA_CP110_SYSCON
drivers/clk/mvebu/Kconfig:      bool

...meaning that it currently is not being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the driver there is no doubt it is builtin-only.

We explicitly disallow a driver unbind, since that doesn't have a
sensible use case anyway, and it allows us to drop the ".remove"
code for non-modular drivers.

Since module_platform_driver() uses the same init level priority as
builtin_platform_driver() the init ordering remains unchanged with
this commit.

Also note that MODULE_DEVICE_TABLE is a no-op for non-modular code.

We also delete the MODULE_LICENSE tag etc. since all that information
is already contained at the top of the file in the comments.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-04 13:32:46 -07:00
Robert Jarzmik
9fe6942950 clk: pxa: transfer CPU clock setting from pxa2xx-cpufreq
This is the initial stage to transfer the pxa25x and pxa27x CPU clocks
handling from cpufreq to the clock API. More precisely, the clocks
transferred are :
 - cpll : core pll, known also as the CPU core turbo frequency
 - core : core, known also as the CPU actual frequency, being either the
          CPU core turbo frequency or the CPU core run frequency

This transfer is a prequel to shrink the code in pxa2xx-cpufreq.c, so
that it can become, at least in devicetree builds, the casual cpufreq-dt
driver.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-04 13:25:03 -07:00
Stéphan Rafin
ac95330b96 clk: sunxi: Fix M factor computation for APB1
commit cfa6368860 ("clk: sunxi: factors: Consolidate get_factors
parameters into a struct") introduced a regression for m factor
computation in sun4i_get_apb1_factors function.

The old code reassigned the "parent_rate" parameter to the targeted
divisor value and was buggy for the returned frequency but not for the
computed factors. Now, returned frequency is good but m factor is
incorrectly computed (its max value 31 is always set resulting in a
significantly slower frequency than the requested one...)

This patch simply restores the original proper computation for m while
keeping the good changes for returned rate.

Fixes: cfa6368860 ("clk: sunxi: factors: Consolidate get_factors parameters into a struct")
Signed-off-by: Stéphan Rafin <stephan@soliotek.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-11-04 08:49:46 +01:00
Maxime Ripard
c6a0637460 clk: sunxi-ng: Add A64 clocks
Add the A64 CCU clocks set.

Acked-by: Rob Herring <robh@kernel.org>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
2016-11-03 09:06:18 +01:00
Rajendra Nayak
3bd31cdc4a clk: qcom: Add freq tables for a few rcgs
Add frequency tables for a few RCG clocks in msm8996

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-02 14:53:16 -07:00
Rajendra Nayak
86c390dcd8 clk: qcom: Add .is_enabled ops for clk-alpha-pll
This would be useful in subsequent patches when the .set_rate operation
would need to identify if the PLL is actually enabled

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
[sboyd@codeaurora.org: Simplify return statement of is_enabled op]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-02 14:52:58 -07:00
Geert Uytterhoeven
a05de66ea6 Merge branch 'rcar-rst' into clk-renesas-for-v4.10
soc: renesas: Add R-Car RST driver for obtaining mode pin state
2016-11-02 20:53:26 +01:00
Geert Uytterhoeven
3e91d07bb5 clk: renesas: rcar-gen2: Remove obsolete rcar_gen2_clocks_init()
The R-Car Gen2 board code no longer calls rcar_gen2_clocks_init().

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2016-11-02 20:44:20 +01:00
Geert Uytterhoeven
b9fe9421d0 clk: renesas: r8a7779: Remove obsolete r8a7779_clocks_init()
The R-Car H1 board code no longer calls r8a7779_clocks_init().

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2016-11-02 20:44:17 +01:00
Geert Uytterhoeven
7978a78c82 clk: renesas: r8a7778: Remove obsolete r8a7778_clocks_init()
The R-Car M1A board code no longer calls r8a7778_clocks_init().

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2016-11-02 20:44:14 +01:00
Geert Uytterhoeven
ddab5aed8e clk: renesas: rcar-gen3-cpg: Remove obsolete rcar_gen3_read_mode_pins()
All R-Car Gen3 clock drivers now obtain the values of the mode pins from
the R-Car RST driver.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2016-11-02 20:43:59 +01:00
Geert Uytterhoeven
05972d48d2 clk: renesas: r8a7796: Obtain mode pin values from R-Car RST driver
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RST module.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2016-11-02 20:43:56 +01:00
Geert Uytterhoeven
969921e0d2 clk: renesas: r8a7795: Obtain mode pin values from R-Car RST driver
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RST module.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
2016-11-02 20:43:51 +01:00
Geert Uytterhoeven
f84c9c3ca9 clk: renesas: rcar-gen2: Obtain mode pin values using RST driver
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RST module.

Fall back to our own private copy of rcar_gen2_read_mode_pins() for
backward-compatibility with old DTs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2016-11-02 20:43:48 +01:00
Geert Uytterhoeven
931db8a0c6 clk: renesas: r8a7779: Obtain mode pin values from R-Car RST driver
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RESET/WDT module.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2016-11-02 20:43:45 +01:00
Geert Uytterhoeven
578d601cbc clk: renesas: r8a7778: Obtain mode pin values using R-Car RST driver
Obtain the values of the mode pins from the R-Car RST driver, which
relies on the presence in DT of a device node for the RESET/WDT module.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
2016-11-02 20:43:42 +01:00
Laurent Pinchart
dbdcc4f996 clk: renesas: r8a7796: Add DU and LVDS clocks
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-02 20:40:08 +01:00
Laurent Pinchart
88ddc1f8e3 clk: renesas: r8a7796: Add VSP clocks
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-02 20:40:07 +01:00
Laurent Pinchart
f4407a6e26 clk: renesas: r8a7796: Add FCP clocks
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-02 20:40:07 +01:00
Geert Uytterhoeven
1b9fe7030c clk: renesas: cpg-mssr: Remove bogus commas from error messages
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-02 20:40:06 +01:00
Ramesh Shanmugasundaram
cf31bc71c0 clk: renesas: r8a7796: Add DRIF clock
This patch adds DRIF module clocks for r8a7796 SoC.

Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
2016-11-02 20:39:55 +01:00
Rajendra Nayak
400d9fda39 clk: qcom: Enable FSM mode for votable alpha PLLs
The votable alpha PLLs need to have the fsm mode enabled as part
of the initialization. The sequence seems to be the same as used
by clk-pll, so move the function which does this into a common
place and reuse it for the clk-alpha-pll

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Taniya Das <tdas@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 18:39:17 -07:00
Rajendra Nayak
31256f4892 clk: qcom: handle alpha PLLs with 16bit alpha val registers
Some alpha PLLs have support for only a 16bit programable Alpha Value
(as against the default 40bits). Add a flag to handle the 16bit alpha
registers

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 18:39:16 -07:00
Rajendra Nayak
9f4e627702 clk: qcom: Add support to initialize alpha plls
Add a function to do initial configuration of the alpha plls

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 18:39:16 -07:00
Rajendra Nayak
feb65645c1 clk: qcom: Add support for alpha pll hwfsm ops
Some PLLs can support an HW FSM mode (different from the Votable FSMs,
though its the same bit used to enable Votable FSMs as well as HW FSMs)
which enables the HW to do the bypass/reset/enable-output-ctrl sequence
on its own. So all thats needed from SW is to set the FSM_ENA bit.
PLL_ACTIVE_FLAG is whats used to check if the PLL is active/enabled.

Some of the PLLs which support HW FSM can also need an OFFLINE request
that needs to be toggled across the enable/disable. We use a flag to
identify such cases and handle them.

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 18:39:15 -07:00
Stephen Boyd
a4315592e8 Merge branch 'clk-fixes' into clk-next
* clk-fixes:
  clk: mmp: pxa910: fix return value check in pxa910_clk_init()
  clk: mmp: pxa168: fix return value check in pxa168_clk_init()
  clk: mmp: mmp2: fix return value check in mmp2_clk_init()
  clk: qoriq: Don't allow CPU clocks higher than starting value
2016-11-01 18:39:07 -07:00
Abhishek Sahu
f747597ea3 clk: qcom: ipq4019: changed i2c freq table
The current I2C freq table uses MND values which is not
applicable for I2C since its RCG does not have MND
counter. This patch updates the freq table for 19.05
MHz clk frequency with FEPLL_200 parent.

Signed-off-by: Abhishek Sahu <absahu@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 18:29:23 -07:00
Robert Jarzmik
fb16d9e50a clk: pxa: export core clocks
pxaxxx_get_clk_frequency_khz() needs several clocks to be available
through clk_get(), ie. the cpu clocks, system bus clock and memory
clocks.

Add the missing clkdev so that their rate can be acquired.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:47:01 -07:00
Robert Jarzmik
7c5145191b clk: pxa: b bit of clkcfg means fast bus
The meaning of this bit was inverted :
 - when set to 0, system bus clock is half of the CPU run clock
 - when set to 1, system bus clock is the CPU run clock

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:46:53 -07:00
Robert Jarzmik
26bd423b88 clk: pxa: core pll is not affected by t bit
The t bit of clkfcfg doesn't affect the core pll clock, but it makes core
clock select between core pll clock and core run clock.

As such remove it from the core pll rate reporting function, while it
remains in clk_pxa27x_core_get_parent().

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:46:49 -07:00
Robert Jarzmik
06b8ec4ead clk: pxa: remove unused variables
This is a cleanup patch to remove unused values not used in their
respective functions.

Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:46:46 -07:00
Mingkai Hu
80e521987b clk: qoriq: add ls1046a support
Signed-off-by: Mingkai Hu <mingkai.hu@nxp.com>
Signed-off-by: Shaohui Xie <Shaohui.Xie@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:45:14 -07:00
Axel Lin
74a484ced2 clk: qcom: lcc-ipq806x: Fixup overriding val in regmap_read call
Drop the assignment of regmap_read return code to val, so the code checks
the value read.

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:44:09 -07:00
Wei Yongjun
10f2bfb092 clk: mmp: pxa910: fix return value check in pxa910_clk_init()
Fix the retrn value check which testing the wrong variable
in pxa910_clk_init().

Fixes: 2bc61da9f7 ("clk: mmp: add pxa910 DT support for clock driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:41:20 -07:00
Wei Yongjun
deab07261d clk: mmp: pxa168: fix return value check in pxa168_clk_init()
Fix the retrn value check which testing the wrong variable
in pxa168_clk_init().

Fixes: ab08aefcd1 ("clk: mmp: add pxa168 DT support for clock driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:41:20 -07:00
Wei Yongjun
a29e52a6e6 clk: mmp: mmp2: fix return value check in mmp2_clk_init()
Fix the retrn value check which testing the wrong variable
in mmp2_clk_init().

Fixes: 1ec770d92a ("clk: mmp: add mmp2 DT support for clock driver")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:41:19 -07:00
Julia Lawall
42134fa2b7 clk: tegra: dfll: improve function-level documentation
Adjust variables to correspond to the names used in the parameter list of
the function.  Move the struct device * variable up to the place where it
appears in the parameter list.

Issue detected using Coccinelle (http://coccinelle.lip6.fr/)

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:38:50 -07:00
Julia Lawall
5170d55e28 clk: keystone: improve function-level documentation
Adjust the documentation to use the actual function names.

Issue detected using Coccinelle (http://coccinelle.lip6.fr/)

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:38:04 -07:00
Marcin Wojtas
57ecc7a0d3 clk: mvebu: migrate CP110 system controller to clk_hw API and registration
Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in Armada
CP110 system controller driver. This commit introduces new
API and registration for all clocks in CP110 HW blocks.

Signed-off-by: Marcin Wojtas <mw@semihalf.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:37:11 -07:00
Krzysztof Kozlowski
9c1b305c1e clk: Enable compile testing for s2mps11 and max77686
s2mps11 and max77686 clock drivers can be compile tested to increase
build coverage.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:33:13 -07:00
Geert Uytterhoeven
16845c1987 clk: renesas: cpg-mssr: Fix inverted debug check
The intention was to enable the checks if debugging is enabled, not
disabled.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:33:05 -07:00
Arvind Yadav
45261a3e62 clk: nxp: clk-lpc18xx-ccu: Unmap region obtained by of_iomap
Free memory mapping, if lpc18xx_ccu_init() is not successful.

Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:32:25 -07:00
Vladimir Zapolskiy
f84d42a9cf clk: lpc32xx: add a quirk for PWM and MS clock dividers
In common clock framework CLK_DIVIDER_ONE_BASED or'ed with
CLK_DIVIDER_ALLOW_ZERO flags indicates that
1) a divider clock may be set to zero value,
2) divider's zero value is interpreted as a non-divided clock.

On the LPC32xx platform clock dividers of PWM and memory card clocks
comply with the first condition, but zero value means a gated clock,
thus it may happen that the divider value is not updated when
the clock is enabled and the clock remains gated.

The change adds one-shot quirks, which check for zero value of divider
on initialization and set it to a non-zero value, therefore in runtime
a gate clock will work as expected.

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Reviewed-by: Sylvain Lemieux <slemieux.tyco@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:29:39 -07:00
Scott Wood
7c1c5413a7 clk: qoriq: Don't allow CPU clocks higher than starting value
The boot-time frequency of a CPU is considered its rated maximum, as we
have no other source of such information.  However, this was previously
only used for chips with 80% restrictions on secondary PLLs.  This
usually wasn't a problem because most chips/configs boot with a divider
of /1, with other dividers being used only for dynamic frequency
reduction.  However, at least one config (LS1021A at less than 1 GHz)
uses a different divider for top speed.  This was causing cpufreq to set
a frequency beyond the chip's rated speed.

This is fixed by applying a 100%-of-initial-speed limit to all CPU PLLs,
similar to the existing 80% limit that only applied to some.

Signed-off-by: Scott Wood <oss@buserror.net>
Cc: stable@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:26:15 -07:00
Rajendra Nayak
4154f61997 clk: qcom: mmcc-8996: Add gpu gdscs
Add gpu gdsc data for msm8996

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:24:44 -07:00
Rajendra Nayak
e7cc455fcd clk: qcom: Handle the clamp_io assert/deassert sequence
Add a flag to mark gdscs which need to support the clamp deassert/assert
before and after the gdsc enable/disable

Signed-off-by: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
2016-11-01 17:24:42 -07:00