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8 years agoclk: highbank: Migrate to clk_hw based registration and OF APIs
Stephen Boyd [Wed, 1 Jun 2016 23:15:02 +0000 (16:15 -0700)]
clk: highbank: Migrate to clk_hw based registration and OF APIs

Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers in this driver, allowing us to
move closer to a clear split of consumer and provider clk APIs.

Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoMerge branch 'clk-st-critical' into clk-next
Stephen Boyd [Thu, 30 Jun 2016 19:19:22 +0000 (12:19 -0700)]
Merge branch 'clk-st-critical' into clk-next

* clk-st-critical:
  clk: st: clkgen-pll: Detect critical clocks
  clk: st: clkgen-fsyn: Detect critical clocks
  clk: st: clk-flexgen: Detect critical clocks

8 years agoclk: st: clkgen-pll: Detect critical clocks
Lee Jones [Tue, 7 Jun 2016 11:19:27 +0000 (12:19 +0100)]
clk: st: clkgen-pll: Detect critical clocks

Utilise the new Critical Clock infrastructure to mark clocks which
much not be disabled as CRITICAL.

Clocks are marked as CRITICAL using clk flags.  This patch also
ensures flags are peculated through the framework in the correct
manner.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: st: clkgen-fsyn: Detect critical clocks
Lee Jones [Tue, 7 Jun 2016 11:19:26 +0000 (12:19 +0100)]
clk: st: clkgen-fsyn: Detect critical clocks

Utilise the new Critical Clock infrastructure to mark clocks which
much not be disabled as CRITICAL.

Clocks are marked as CRITICAL using clk flags.  This patch also
ensures flags are peculated through the framework in the correct
manner.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: st: clk-flexgen: Detect critical clocks
Lee Jones [Tue, 7 Jun 2016 11:19:25 +0000 (12:19 +0100)]
clk: st: clk-flexgen: Detect critical clocks

Utilise the new Critical Clock infrastructure to mark clocks which
much not be disabled as CRITICAL.

While we're at it, reduce the coverage of the flex_flags variable,
since it's only really used in a single for() loop.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoMerge branch 'clk-hi6220-rtc' into clk-next
Stephen Boyd [Thu, 30 Jun 2016 19:14:50 +0000 (12:14 -0700)]
Merge branch 'clk-hi6220-rtc' into clk-next

* clk-hi6220-rtc:
  clk: hi6220: Add RTC clock for pl031

8 years agoclk: hi6220: Add RTC clock for pl031
Zhangfei Gao [Thu, 30 Jun 2016 00:48:44 +0000 (17:48 -0700)]
clk: hi6220: Add RTC clock for pl031

Adds clk support for the pl031 RTC on hi6220

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Pawel Moll <pawel.moll@arm.com>
Cc: Wei Xu <xuwei5@hisilicon.com>
Cc: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Zhangfei Gao <zhangfei.gao@linaro.org>
[jstultz: Forward ported, tweaked commit description]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoMerge 'clk-notify' into clk-next
Stephen Boyd [Wed, 29 Jun 2016 17:54:13 +0000 (10:54 -0700)]
Merge 'clk-notify' into clk-next

* clk-notify:
  clk: Provide notifier stubs when !COMMON_CLK

8 years agoMerge tag 'clk-renesas-for-v4.8-tag2' of git://git.kernel.org/pub/scm/linux/kernel...
Stephen Boyd [Wed, 29 Jun 2016 17:53:31 +0000 (10:53 -0700)]
Merge tag 'clk-renesas-for-v4.8-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next

Pull second batch of Renesas clk driver updates from Geert
Uytterhoeven:

  - Add support for R-Car V2H,
  - Add FDP1, DRIF, and thermal clocks on R-Car H3,
  - Correct a wrong parent clock.

* tag 'clk-renesas-for-v4.8-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
  clk: renesas: r8a7795: Add THS/TSC clock
  clk: renesas: r8a7795: Add DRIF clock
  clk: renesas: r8a7795: Correct lvds clock parent
  clk: renesas: r8a7795: Provide FDP1 clocks
  clk: renesas: Add R8A7792 support
  clk: renesas: mstp: Document R8A7792 support
  clk: renesas: rcar-gen2: Document R8A7792 support

8 years agoclk: Provide notifier stubs when !COMMON_CLK
Krzysztof Kozlowski [Tue, 28 Jun 2016 11:25:04 +0000 (13:25 +0200)]
clk: Provide notifier stubs when !COMMON_CLK

The clk notifier symbols are hidden by COMMON_CLK.  However on some
platforms HAVE_CLK might be set while COMMON_CLK not which leads to
compile test build errors like:

$ make.cross ARCH=sh
   drivers/devfreq/tegra-devfreq.c: In function 'tegra_actmon_rate_notify_cb':
>> drivers/devfreq/tegra-devfreq.c:391:16: error: 'POST_RATE_CHANGE' undeclared (first use in this function)
     if (action != POST_RATE_CHANGE)
                   ^
   drivers/devfreq/tegra-devfreq.c: In function 'tegra_devfreq_probe':
>> drivers/devfreq/tegra-devfreq.c:654:8: error: implicit declaration of function 'clk_notifier_register' [-Werror=implicit-function-declaration]
     err = clk_notifier_register(tegra->emc_clock, &tegra->rate_change_nb);
           ^

Export the macros and data type declarations outside of COMMON_CLK ifdef
and provide stubs to fix the compile testing.

Reported-by: kbuild test robot <lkp@intel.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoMerge tag 'clk-renesas-for-v4.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel...
Stephen Boyd [Tue, 28 Jun 2016 23:36:34 +0000 (16:36 -0700)]
Merge tag 'clk-renesas-for-v4.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next

Pull support for Renesas R-car M3-W from Geert Uytterhoeven:

Add initial support for the Clock Pulse Generator and Module Standby and
Software Reset modules on the Renesas R-Car M3-W SoC:
  - Basic core clocks,
  - SCIF2 (console) module clock,
  - INTC-AP (GIC) module clock.

* tag 'clk-renesas-for-v4.8-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
  clk: renesas: cpg-mssr: Add support for R-Car M3-W
  clk: renesas: cpg-mssr: Extract common R-Car Gen3 support code
  clk: renesas: Add r8a7796 CPG Core Clock Definitions
  clk: renesas: cpg-mssr: Document r8a7796 support

8 years agoclk: qcom: Remove gcc_aggre1_pnoc_ahb_clk from msm8996
Stephen Boyd [Tue, 21 Jun 2016 22:53:14 +0000 (15:53 -0700)]
clk: qcom: Remove gcc_aggre1_pnoc_ahb_clk from msm8996

This clk is critical to operation of the SoC and should never be
turned off. Furthermore, there are no consumers of this clk so
let's just delete it so things like eMMC work.

Reported-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Fixes: b1e010c0730a ("clk: qcom: Add MSM8996 Global Clock Control (GCC) driver")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoMerge remote-tracking branch 'clk/clk-s905' into clk-next
Michael Turquette [Thu, 23 Jun 2016 01:20:12 +0000 (18:20 -0700)]
Merge remote-tracking branch 'clk/clk-s905' into clk-next

8 years agoclk: gxbb: add AmLogic GXBB clk controller driver
Michael Turquette [Mon, 23 May 2016 22:44:26 +0000 (15:44 -0700)]
clk: gxbb: add AmLogic GXBB clk controller driver

The gxbb clock controller is the primary clock generation unit for the
AmLogic GXBB SoC. It is clocked by a fixed 24MHz xtal, contains several
PLLs and the usual post-dividers, muxes, dividers and leaf gates that
are fed into various IP blocks in the SoC.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: gxbb: Document bindings for the GXBB clock controller
Michael Turquette [Thu, 9 Jun 2016 23:20:47 +0000 (16:20 -0700)]
clk: gxbb: Document bindings for the GXBB clock controller

Add documentations for the clock controller.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson: fractional pll support
Michael Turquette [Tue, 7 Jun 2016 01:08:15 +0000 (18:08 -0700)]
clk: meson: fractional pll support

Fractional MPLLs are a superset of the existing AmLogic MPLLs. They add
in a couple of new bitfields for further dividing the clock rate to
achieve rates with fractional hertz.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson: add mpll support
Michael Turquette [Tue, 7 Jun 2016 06:16:17 +0000 (23:16 -0700)]
clk: meson: add mpll support

MPLLs are adjustable rate clocks derived from PLLs. On both Meson8b and
GXBB they appear to be only derived from fixed_pll.

Add support for these clock types so that they can be added to their
respective drivers.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson: add peripheral gate macro
Michael Turquette [Tue, 7 Jun 2016 23:00:55 +0000 (16:00 -0700)]
clk: meson: add peripheral gate macro

There are a series of peripheral and system gate clocks that fan out
from the clk81 signal. Add a helper macro to statically initialize these
gate clocks.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson: only build selected platforms
Michael Turquette [Mon, 23 May 2016 21:29:13 +0000 (14:29 -0700)]
clk: meson: only build selected platforms

Break the AmLogic clock code up so that only the necessary parts are
compiled and linked. The core code is selected by both arm and arm64
builds with COMMON_CLK_AMLOGIC. The individual drivers have their own
config options as well.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson8b: convert to platform_driver
Michael Turquette [Wed, 11 May 2016 18:11:18 +0000 (11:11 -0700)]
clk: meson8b: convert to platform_driver

This patch creates a proper platform_driver for the meson8b clock
controller. Use of CLK_OF_DECLARE is removed, and can be added back in
later if very early registration of some clocks is required.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson8b: clean up composite clocks
Michael Turquette [Thu, 28 Apr 2016 19:01:51 +0000 (12:01 -0700)]
clk: meson8b: clean up composite clocks

Remove the composite clock registration function and helpers. Replace
unnecessary configuration struct with static initialization of the
desired clock type.

To preserve git bisect this patch also flips the switch and starts using
of_clk_add_hw_provider instead of the deprecated meson_clk_register_clks
method. As a byproduct clk.c can be deleted.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson8b: remove mali clk
Michael Turquette [Thu, 5 May 2016 14:56:42 +0000 (07:56 -0700)]
clk: meson8b: remove mali clk

This clock is undocumented and always orphaned. Get rid of it until we
have more complete clock tree documentation.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson8b: clean up cpu clocks
Michael Turquette [Sat, 30 Apr 2016 19:47:36 +0000 (12:47 -0700)]
clk: meson8b: clean up cpu clocks

Remove the cpu clock registration function and helpers. Replace
unnecessary configuration struct with static initialization of the
desired clock type.

Ninja rename a5_clk to cpu_clk to better align with cpufreq convention.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson8b: clean up fixed factor clocks
Michael Turquette [Thu, 28 Apr 2016 19:01:58 +0000 (12:01 -0700)]
clk: meson8b: clean up fixed factor clocks

Remove the fixed factor registration function and helpers. Replace
unnecessary configuration struct with static initialization of the
desired clock type.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson8b: clean up pll clocks
Michael Turquette [Thu, 28 Apr 2016 19:01:42 +0000 (12:01 -0700)]
clk: meson8b: clean up pll clocks

Remove the pll registration function and helpers. Replace unnecessary
configuration struct with static initialization of the desired clock
type.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson8b: clean up fixed rate clocks
Michael Turquette [Thu, 28 Apr 2016 19:00:52 +0000 (12:00 -0700)]
clk: meson8b: clean up fixed rate clocks

Remove the fixed_rate registration function and helpers from clkc.[ch].
Replace unnecessary configuration struct with static initialization of
the desired clock type.

While we're here, begin the transition to a proper platform_driver and
call of_clk_add_hw_provider with a shiny new struct clk_hw_onecell_data.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: meson8b: rectify reg offsets with datasheet
Michael Turquette [Fri, 29 Apr 2016 00:18:52 +0000 (17:18 -0700)]
clk: meson8b: rectify reg offsets with datasheet

The register offsets in the data sheet are confusing. Document them more
thoroughly.

Tested-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
8 years agoclk: renesas: r8a7795: Add THS/TSC clock
Khiem Nguyen [Sun, 19 Jun 2016 02:34:18 +0000 (09:34 +0700)]
clk: renesas: r8a7795: Add THS/TSC clock

Signed-off-by: Khiem Nguyen <khiem.nguyen.xt@rvc.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agoclk: renesas: r8a7795: Add DRIF clock
Ramesh Shanmugasundaram [Fri, 17 Jun 2016 12:25:14 +0000 (13:25 +0100)]
clk: renesas: r8a7795: Add DRIF clock

This patch adds DRIF module clocks for r8a7795 SoC.

Signed-off-by: Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agoclk: renesas: r8a7795: Correct lvds clock parent
Geert Uytterhoeven [Fri, 10 Jun 2016 07:36:44 +0000 (09:36 +0200)]
clk: renesas: r8a7795: Correct lvds clock parent

According to the latest information, the parent clock of the LVDS module
clock is the S0D4 clock, not the S2D1 clock.

Note that this change has no influence on actual operation, as the
rcar-du LVDS encoder driver doesn't use the parent clock's rate.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
8 years agoclk: renesas: r8a7795: Provide FDP1 clocks
Kieran Bingham [Thu, 9 Jun 2016 16:12:26 +0000 (17:12 +0100)]
clk: renesas: r8a7795: Provide FDP1 clocks

Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: Kieran Bingham <kieran@bingham.xyz>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agoclk: renesas: Add R8A7792 support
Sergei Shtylyov [Wed, 25 May 2016 21:40:44 +0000 (00:40 +0300)]
clk: renesas: Add R8A7792 support

Renesas R-Car V2H (R8A7792) clocks are handled by R-Car gen2 clock driver.

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agoclk: renesas: mstp: Document R8A7792 support
Sergei Shtylyov [Fri, 3 Jun 2016 20:59:07 +0000 (23:59 +0300)]
clk: renesas: mstp: Document R8A7792 support

Renesas R8A7792 SoC also has the CPG MSTP clocks...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agoclk: renesas: rcar-gen2: Document R8A7792 support
Sergei Shtylyov [Fri, 3 Jun 2016 20:58:03 +0000 (23:58 +0300)]
clk: renesas: rcar-gen2: Document R8A7792 support

Renesas R8A7792 SoC is a member of the R-Car gen2 family and so has CPG...

Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
8 years agoMerge tag 'clk-samsung-4.8' of git://linuxtv.org/snawrocki/samsung into clk-next
Stephen Boyd [Tue, 21 Jun 2016 01:00:16 +0000 (18:00 -0700)]
Merge tag 'clk-samsung-4.8' of git://linuxtv.org/snawrocki/samsung into clk-next

Merge changes from Sylwester Nawrocki for samsung clk drivers:

 - a fix for exynos7 to prevent gating some critical CMU clocks,
 - addition of CPU clocks for CPU frequency scaling on Exynos5433 SoCs,
 - additions for exynos5410 SoC required for Odroid XU board support,
 - register accessors fixes for kernels built for big endian operation
   (mostly exynos4 SoCs),
 - Exynos5433 clock definitions fixes required for suspend to RAM and
   the audio subsystem operation,
 - many cleanups changing attributes of the clock initializer data

* tag 'clk-samsung-4.8' of git://linuxtv.org/snawrocki/samsung: (41 commits)
  clk: samsung: exynos5433: Add CLK_IGNORE_UNUSED flag to PCIE device
  clk: samsung: exynos5433: Add CLK_IGNORE_UNUSED flags to avoid hang during S2R
  clk: samsung: exynos5433: Add CLK_IGNORE_UNUSED flag for AUD UART
  clk: samsung: exynos4: fixup reg access on be
  clk: samsung: fixup endian in pll clk
  clk: samsung: exynos5410: Add WDT, ACLK266 and SSS clocks
  clk: samsung: exynos5433: add CPU clocks configuration data and instantiate CPU clocks
  clk: samsung: cpu: prepare for adding Exynos5433 CPU clocks
  clk: samsung: exynos5433: prepare for adding CPU clocks
  clk: samsung: Suppress unbinding to prevent theoretical attacks
  clk: samsung: exynos5420: Set ID for aclk333 gate clock
  clk: samsung: exynos5410: Add TMU clock
  clk: samsung: exynos5410: Add I2C, HSI2C and RTC clocks
  clk: samsung: exynos5410: Add serial3, USB and PWM clocks
  clk: samsung: exynos3250: Move PLL rates data to init section
  clk: samsung: Fully constify mux parent names
  clk: samsung: exynos5250: Move sleep init function to init section
  clk: samsung: exynos5420: Move sleep init function and PLL data to init section
  clk: samsung: exynos5433: Move PLL rates data to init section
  clk: samsung: exynos5433: Constify all clock initializers
  ...

8 years agoclk: correct comments for __clk_determine_rate
Peng Fan [Mon, 13 Jun 2016 11:34:21 +0000 (19:34 +0800)]
clk: correct comments for __clk_determine_rate

Correct comments for __clk_determine_rate.

Signed-off-by: Peng Fan <van.freenix@gmail.com>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: vt8500: rework wm8650_find_pll_bits()
Roman Volkov [Tue, 7 Jun 2016 21:56:10 +0000 (00:56 +0300)]
clk: vt8500: rework wm8650_find_pll_bits()

PLL clock on WM8650 is calculated in the following way:

M * parent [O1] => / P [O2] => / D [O3]

Where O2 is 600MHz >= (M * parent) / P >= 300MHz.

Current algorithm does not met this requirement, so that the
function may return rates which are not supported by the hardware.

This patch fixes the algorithm and simplifies the code, reducing
the calculation time by ~10000 times (according to usermode app) by
removing the nested loops.

Signed-off-by: Roman Volkov <rvolkov@v1ros.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: vt8500: fix gcc-4.9 warnings
Arnd Bergmann [Tue, 7 Jun 2016 21:56:09 +0000 (00:56 +0300)]
clk: vt8500: fix gcc-4.9 warnings

This fixes some false positive warnings we get with older compiler
versions:

clk-vt8500.c: In function â€˜wm8650_find_pll_bits’:
clk-vt8500.c:430:12: â€˜best_div2’ may be used uninitialized in this function
clk-vt8500.c:429:12: â€˜best_div1’ may be used uninitialized in this function
clk-vt8500.c:428:14: â€˜best_mul’ may be used uninitialized in this function
clk-vt8500.c: In function â€˜wm8750_find_pll_bits’:
clk-vt8500.c:509:12: â€˜best_div2’ may be used uninitialized in this function
clk-vt8500.c:508:12: â€˜best_div1’ may be used uninitialized in this function
clk-vt8500.c:507:14: â€˜best_mul’ may be used uninitialized in this function
clk-vt8500.c: In function â€˜wm8850_find_pll_bits’:
clk-vt8500.c:560:12: â€˜best_div2’ may be used uninitialized in this function
clk-vt8500.c:559:12: â€˜best_div1’ may be used uninitialized in this function
clk-vt8500.c:558:14: â€˜best_mul’ may be used uninitialized in this function

As the local variables are only use for temporaries, we can just
as well assign the final values directly, which also makes the
code slightly shorter.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Roman Volkov <rvolkov@v1ros.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: Remove unused variable
Lee Jones [Tue, 7 Jun 2016 12:25:02 +0000 (13:25 +0100)]
clk: Remove unused variable

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: hi6220: fix missing clk.h include
Ben Dooks [Tue, 7 Jun 2016 13:54:08 +0000 (14:54 +0100)]
clk: hi6220: fix missing clk.h include

Fix the warning from missing "clk.h" include which
defines hi6220_register_clkdiv() function.

drivers/clk/hisilicon/clkdivider-hi6220.c:102:12: warning: symbol 'hi6220_register_clkdiv' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: iproc: fix missing include of clk-iproc.h
Ben Dooks [Tue, 7 Jun 2016 16:32:30 +0000 (17:32 +0100)]
clk: iproc: fix missing include of clk-iproc.h

Fix the implicit declaration of iproc_armpll_setup() by
including clk-iproc.h which defines it. Fixes the warning:

drivers/clk/bcm/clk-iproc-armpll.c:242:13: warning: symbol 'iproc_armpll_setup' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Ray Jui <ray.jui@broadcom.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: at91: make of_sama5d2_clk_generated_setup() static
Ben Dooks [Tue, 7 Jun 2016 16:38:09 +0000 (17:38 +0100)]
clk: at91: make of_sama5d2_clk_generated_setup() static

The of_sama5d2_clk_generated_setup() is not exported outside
of the driver, so make it static to fix the warning about it
being not static:

drivers/clk/at91/clk-generated.c:270:13: warning: symbol 'of_sama5d2_clk_generated_setup' was not declared. Should it be static?

Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoMerge branch 'clk-fixes' into clk-next
Stephen Boyd [Tue, 21 Jun 2016 00:44:14 +0000 (17:44 -0700)]
Merge branch 'clk-fixes' into clk-next

* clk-fixes:
  clk: Fix return value check in oxnas_stdclk_probe()
  clk: rockchip: release io resource when failing to init clk on rk3399
  clk: rockchip: fix cpuclk registration error handling
  clk: rockchip: Revert "clk: rockchip: reset init state before mmc card initialization"
  clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src
  clk: rockchip: mark rk3399 GIC clocks as critical
  clk: rockchip: initialize flags of clk_init_data in mmc-phase clock

8 years agoMerge tag 'v4.7-rockchip-clk-fixes1' of git://git.kernel.org/pub/scm/linux/kernel...
Stephen Boyd [Tue, 21 Jun 2016 00:01:45 +0000 (17:01 -0700)]
Merge tag 'v4.7-rockchip-clk-fixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-fixes

A bunch of fixes. Some for the newly added rk3399 clock tree, some
concerning error handling and initialization and a revert of the
mmc-phase clock initialization, as this could conflict with the
bootloader setting of this clock and a real solution to initing
the phase correctly from dw_mmc went in as fix for 4.7 through
the mmc tree.

* tag 'v4.7-rockchip-clk-fixes1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: release io resource when failing to init clk on rk3399
  clk: rockchip: fix cpuclk registration error handling
  clk: rockchip: Revert "clk: rockchip: reset init state before mmc card initialization"
  clk: rockchip: fix incorrect parent for rk3399's {c,g}pll_aclk_perihp_src
  clk: rockchip: mark rk3399 GIC clocks as critical
  clk: rockchip: initialize flags of clk_init_data in mmc-phase clock

8 years agoclk: Fix return value check in oxnas_stdclk_probe()
Wei Yongjun [Fri, 17 Jun 2016 17:24:23 +0000 (17:24 +0000)]
clk: Fix return value check in oxnas_stdclk_probe()

In case of error, the function syscon_node_to_regmap() returns
ERR_PTR() and never returns NULL. The NULL test in the return
value check should be replaced with IS_ERR().

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Fixes: 0bbd72b4c64f ("clk: Add Oxford Semiconductor OXNAS Standard Clocks")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: multiplier: Prevent the multiplier from under / over flowing
Maxime Ripard [Mon, 16 May 2016 12:47:02 +0000 (14:47 +0200)]
clk: multiplier: Prevent the multiplier from under / over flowing

In the current multiplier base clock implementation, if the
CLK_SET_RATE_PARENT flag isn't set, the code will not make sure that the
multiplier computed remains within the boundaries of our clock.

This means that if the clock we want to reach is below the parent rate,
or if the multiplier is above the maximum that we can reach, we will end up
with a completely bogus one that the clock cannot achieve.

Fixes: f2e0a53271a4 ("clk: Add a basic multiplier clock")
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1463402840-17062-3-git-send-email-maxime.ripard@free-electrons.com

8 years agoMerge commit 'f17a0dd1c2e0' into clk-next
Michael Turquette [Fri, 17 Jun 2016 05:07:08 +0000 (22:07 -0700)]
Merge commit 'f17a0dd1c2e0' into clk-next

8 years agoclk: Use _rcuidle suffix to allow clk_core_enable() to used from idle
Paul E. McKenney [Tue, 26 Apr 2016 21:02:23 +0000 (14:02 -0700)]
clk: Use _rcuidle suffix to allow clk_core_enable() to used from idle

This commit fixes the RCU use-from-idle bug corresponding the following
splat:

> [ INFO: suspicious RCU usage. ]
> 4.6.0-rc5-next-20160426+ #1127 Not tainted
> -------------------------------
> include/trace/events/clk.h:45 suspicious rcu_dereference_check() usage!
>
> other info that might help us debug this:
>
>
> RCU used illegally from idle CPU!
> rcu_scheduler_active = 1, debug_locks = 0
> RCU used illegally from extended quiescent state!
> 2 locks held by swapper/0/0:
>  #0:  (&oh->hwmod_key#30){......}, at: [<c0121afc>] omap_hwmod_enable+0x18/0x44
>  #1:  (enable_lock){......}, at: [<c0630684>] clk_enable_lock+0x18/0x124
>
> stack backtrace:
> CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.6.0-rc5-next-20160426+ #1127
> Hardware name: Generic OMAP36xx (Flattened Device Tree)
> [<c0110290>] (unwind_backtrace) from [<c010c3a8>] (show_stack+0x10/0x14)
> [<c010c3a8>] (show_stack) from [<c047fd68>] (dump_stack+0xb0/0xe4)
> [<c047fd68>] (dump_stack) from [<c06315c0>] (clk_core_enable+0x1e0/0x36c)
> [<c06315c0>] (clk_core_enable) from [<c0632298>] (clk_enable+0x1c/0x38)
> [<c0632298>] (clk_enable) from [<c01204e0>] (_enable_clocks+0x18/0x7c)
> [<c01204e0>] (_enable_clocks) from [<c012137c>] (_enable+0x114/0x2ec)
> [<c012137c>] (_enable) from [<c0121b08>] (omap_hwmod_enable+0x24/0x44)
> [<c0121b08>] (omap_hwmod_enable) from [<c0122ad0>] (omap_device_enable+0x3c/0x90)
> [<c0122ad0>] (omap_device_enable) from [<c0122b34>] (_od_runtime_resume+0x10/0x38)
> [<c0122b34>] (_od_runtime_resume) from [<c052cc00>] (__rpm_callback+0x2c/0x60)
> [<c052cc00>] (__rpm_callback) from [<c052cc54>] (rpm_callback+0x20/0x80)
> [<c052cc54>] (rpm_callback) from [<c052df7c>] (rpm_resume+0x3d0/0x6f0)
> [<c052df7c>] (rpm_resume) from [<c052e2e8>] (__pm_runtime_resume+0x4c/0x64)
> [<c052e2e8>] (__pm_runtime_resume) from [<c04bf2c4>] (omap2_gpio_resume_after_idle+0x54/0x68)
> [<c04bf2c4>] (omap2_gpio_resume_after_idle) from [<c01269dc>] (omap3_enter_idle_bm+0xfc/0x1ec)
> [<c01269dc>] (omap3_enter_idle_bm) from [<c0601888>] (cpuidle_enter_state+0x80/0x3d4)
> [<c0601888>] (cpuidle_enter_state) from [<c0183b08>] (cpu_startup_entry+0x198/0x3a0)
> [<c0183b08>] (cpu_startup_entry) from [<c0b00c0c>] (start_kernel+0x354/0x3c8)
> [<c0b00c0c>] (start_kernel) from [<8000807c>] (0x8000807c)

Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: <linux-omap@vger.kernel.org>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: <linux-clk@vger.kernel.org>
8 years agoclk: Add _rcuidle tracepoints to allow clk_core_disable() use from idle
Paul E. McKenney [Tue, 26 Apr 2016 19:43:57 +0000 (12:43 -0700)]
clk: Add _rcuidle tracepoints to allow clk_core_disable() use from idle

This commit adds an _rcuidle suffix to a pair of trace events to
prevent the following splat:

> ===============================
> [ INFO: suspicious RCU usage. ]
> 4.6.0-rc5-next-20160426+ #1114 Not tainted
> -------------------------------
> include/trace/events/clk.h:59 suspicious rcu_dereference_check() usage!
>
> other info that might help us debug this:
>
>
> RCU used illegally from idle CPU!
> rcu_scheduler_active = 1, debug_locks = 0
> RCU used illegally from extended quiescent state!
> 2 locks held by swapper/0/0:
>  #0:  (&oh->hwmod_key#30){......}, at: [<c0121b40>] omap_hwmod_idle+0x18/0x44
>  #1:  (enable_lock){......}, at: [<c0630998>] clk_enable_lock+0x18/0x124
>
> stack backtrace:
> CPU: 0 PID: 0 Comm: swapper/0 Not tainted 4.6.0-rc5-next-20160426+ #1114
> Hardware name: Generic OMAP36xx (Flattened Device Tree)
> [<c0110290>] (unwind_backtrace) from [<c010c3a8>] (show_stack+0x10/0x14)
> [<c010c3a8>] (show_stack) from [<c047fd68>] (dump_stack+0xb0/0xe4)
> [<c047fd68>] (dump_stack) from [<c0631618>] (clk_core_disable+0x17c/0x348)
> [<c0631618>] (clk_core_disable) from [<c0632774>] (clk_disable+0x24/0x30)
> [<c0632774>] (clk_disable) from [<c0120590>] (_disable_clocks+0x18/0x7c)
> [<c0120590>] (_disable_clocks) from [<c0121680>] (_idle+0x12c/0x230)
> [<c0121680>] (_idle) from [<c0121b4c>] (omap_hwmod_idle+0x24/0x44)
> [<c0121b4c>] (omap_hwmod_idle) from [<c0122c24>] (omap_device_idle+0x3c/0x90)
> [<c0122c24>] (omap_device_idle) from [<c052cc00>] (__rpm_callback+0x2c/0x60)
> [<c052cc00>] (__rpm_callback) from [<c052cc54>] (rpm_callback+0x20/0x80)
> [<c052cc54>] (rpm_callback) from [<c052d150>] (rpm_suspend+0x100/0x768)
> [<c052d150>] (rpm_suspend) from [<c052ec58>] (__pm_runtime_suspend+0x64/0x84)
> [<c052ec58>] (__pm_runtime_suspend) from [<c04bf25c>] (omap2_gpio_prepare_for_idle+0x5c/0x70)
> [<c04bf25c>] (omap2_gpio_prepare_for_idle) from [<c0125568>] (omap_sram_idle+0x140/0x244)
> [<c0125568>] (omap_sram_idle) from [<c01269dc>] (omap3_enter_idle_bm+0xfc/0x1ec)
> [<c01269dc>] (omap3_enter_idle_bm) from [<c0601bdc>] (cpuidle_enter_state+0x80/0x3d4)
> [<c0601bdc>] (cpuidle_enter_state) from [<c0183b08>] (cpu_startup_entry+0x198/0x3a0)
> [<c0183b08>] (cpu_startup_entry) from [<c0b00c0c>] (start_kernel+0x354/0x3c8)
> [<c0b00c0c>] (start_kernel) from [<8000807c>] (0x8000807c)

Reported-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Tested-by: Tony Lindgren <tony@atomide.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Cc: Russell King <linux@arm.linux.org.uk>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: <linux-omap@vger.kernel.org>
Cc: <linux-arm-kernel@lists.infradead.org>
Cc: <linux-clk@vger.kernel.org>
8 years agoclk: samsung: exynos5433: Add CLK_IGNORE_UNUSED flag to PCIE device
Jaehoon Chung [Fri, 10 Jun 2016 04:56:32 +0000 (13:56 +0900)]
clk: samsung: exynos5433: Add CLK_IGNORE_UNUSED flag to PCIE device

This patch adds the CLK_IGNORE_UNUSED flag for PCI Express's clocks
which need to remain enabled. The 'pcie' gate clock definition is
also added.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
[s.nawrocki@samsung.com: edited the patch's summary]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5433: Add CLK_IGNORE_UNUSED flags to avoid hang during S2R
Jonghwa Lee [Fri, 10 Jun 2016 04:56:31 +0000 (13:56 +0900)]
clk: samsung: exynos5433: Add CLK_IGNORE_UNUSED flags to avoid hang during S2R

Some clocks are required to be unmasked during suspend to RAM. Otherwise
the PMU will stuck and the power down sequence will never be completed.

Signed-off-by: Jonghwa Lee <jonghwa3.lee@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
[s.nawrocki@samsung.com: edited the patch's summary]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5433: Add CLK_IGNORE_UNUSED flag for AUD UART
Beomho Seo [Fri, 10 Jun 2016 04:56:30 +0000 (13:56 +0900)]
clk: samsung: exynos5433: Add CLK_IGNORE_UNUSED flag for AUD UART

This patch adds CLK_IGNORE_UNUSED flag for sclk_aud_uart gate
clock for uart3 operation.

Signed-off-by: Beomho Seo <beomho.seo@samsung.com>
Signed-off-by: Chanwoo Choi <cw00.choi@samsung.com>
[s.nawrocki@samsung.com: edited the patch's summary]
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos4: fixup reg access on be
Matthew Leach [Wed, 8 Jun 2016 18:30:58 +0000 (19:30 +0100)]
clk: samsung: exynos4: fixup reg access on be

Use the byte-order aware big endian accessors, allowing for kernels
running under big-endian.

Signed-off-by: Matthew Leach <matthew@mattleach.net>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: fixup endian in pll clk
Matthew Leach [Wed, 8 Jun 2016 18:30:56 +0000 (19:30 +0100)]
clk: samsung: fixup endian in pll clk

Fix the clk endian access code to deal with kernels built for big endian
operation.

Signed-off-by: Matthew Leach <matthew@mattleach.net>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: renesas: cpg-mssr: Add support for R-Car M3-W
Geert Uytterhoeven [Tue, 3 May 2016 09:06:15 +0000 (11:06 +0200)]
clk: renesas: cpg-mssr: Add support for R-Car M3-W

Initial support for R-Car M3-W (r8a7796), including basic core clocks,
and SCIF2 (console) and INTC-AP (GIC) module clocks.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
8 years agoclk: renesas: cpg-mssr: Extract common R-Car Gen3 support code
Geert Uytterhoeven [Wed, 4 May 2016 12:32:56 +0000 (14:32 +0200)]
clk: renesas: cpg-mssr: Extract common R-Car Gen3 support code

Extract the code to support parts common to all members of the R-Car
Gen3 SoC family into a separate file, to ease sharing among SoC-specific
drivers.

Note that while the cpg_pll_configs[] arrays and the selection of the
config based on the MODE bits are identical on R-Car H3 and R-Car M3-W,
they are not common, and may be different on other R-Car Gen3 SoCs.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
8 years agoclk: renesas: Add r8a7796 CPG Core Clock Definitions
Geert Uytterhoeven [Mon, 2 May 2016 12:36:32 +0000 (14:36 +0200)]
clk: renesas: Add r8a7796 CPG Core Clock Definitions

Add all R-Car M3-W Clock Pulse Generator Core Clock Outputs, as listed
in Table 8.2b ("List of Clocks [R-Car M3-W]") of the R-Car Gen3
datasheet (rev. 0.51 + Errata for Rev051 Mar 31 2016).

Note that internal CPG clocks (S0, S1, S2, S3, SDSRC, and SSPSRC) are
not included, as they are used as internal clock sources only, and never
referenced from DT.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
8 years agoclk: renesas: cpg-mssr: Document r8a7796 support
Geert Uytterhoeven [Tue, 3 May 2016 07:37:08 +0000 (09:37 +0200)]
clk: renesas: cpg-mssr: Document r8a7796 support

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Rob Herring <robh@kernel.org>
Tested-by: Simon Horman <horms+renesas@verge.net.au>
8 years agoclk: rockchip: release io resource when failing to init clk on rk3399
Shawn Lin [Fri, 3 Jun 2016 00:54:18 +0000 (08:54 +0800)]
clk: rockchip: release io resource when failing to init clk on rk3399

We should call iounmap to relase reg_base since it's not going
to be used any more if failing to init clk.

This was missing on the newly added rk3399 clock tree.

Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
8 years agoclk: samsung: exynos5410: Add WDT, ACLK266 and SSS clocks
Krzysztof Kozlowski [Wed, 1 Jun 2016 09:45:50 +0000 (11:45 +0200)]
clk: samsung: exynos5410: Add WDT, ACLK266 and SSS clocks

Add clock hierarchy for Security SubSystem clock and watchdog.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5433: add CPU clocks configuration data and instantiate CPU clocks
Bartlomiej Zolnierkiewicz [Tue, 24 May 2016 13:19:17 +0000 (15:19 +0200)]
clk: samsung: exynos5433: add CPU clocks configuration data and instantiate CPU clocks

Add the CPU clocks configuration data and instantiate the CPU clocks
type for Exynos5433.

Cc: Kukjin Kim <kgene@kernel.org>
CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: cpu: prepare for adding Exynos5433 CPU clocks
Bartlomiej Zolnierkiewicz [Tue, 24 May 2016 13:19:16 +0000 (15:19 +0200)]
clk: samsung: cpu: prepare for adding Exynos5433 CPU clocks

Exynos5433 uses different register layout for CPU clock registers
than earlier SoCs so add new code for handling this layout.  Also
add new CLK_CPU_HAS_E5433_REGS_LAYOUT flag to request using it.

There should be no functional change resulting from this patch.

Cc: Kukjin Kim <kgene@kernel.org>
CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5433: prepare for adding CPU clocks
Bartlomiej Zolnierkiewicz [Tue, 24 May 2016 13:19:15 +0000 (15:19 +0200)]
clk: samsung: exynos5433: prepare for adding CPU clocks

Open-code samsung_cmu_register_one() calls for CMU_APOLLO and
CMU_ATLAS setup code as a preparation for adding CPU clocks
support for Exynos5433.

There should be no functional change resulting from this patch.

Cc: Kukjin Kim <kgene@kernel.org>
CC: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: Suppress unbinding to prevent theoretical attacks
Krzysztof Kozlowski [Tue, 17 May 2016 07:26:14 +0000 (09:26 +0200)]
clk: samsung: Suppress unbinding to prevent theoretical attacks

Although unbinding a driver requires root privileges but it still might
be used theoretically in certain attacks (by triggering NULL pointer
exception or memory corruption if driver does not provide proper remove
callbacks or core does not handle it).

Samsung clock drivers are essential for system operation so their
removal is not expected. More over, the Exynos3250 ISP clock driver does
not implement remove() driver callback and it is not buildable as
modules.

Suppress the unbind interface for Exynos3250 ISP and S3C2410 DCLK clock
drivers.

Suggested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5420: Set ID for aclk333 gate clock
Javier Martinez Canillas [Tue, 24 May 2016 17:41:01 +0000 (13:41 -0400)]
clk: samsung: exynos5420: Set ID for aclk333 gate clock

The aclk333 clock needs to be ungated during the MFC power domain switch,
so set the clock ID to allow the Exynos power domain logic to lookup this
clock if is defined in the MFC PD device tree node.

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5410: Add TMU clock
Krzysztof Kozlowski [Tue, 31 May 2016 18:39:01 +0000 (20:39 +0200)]
clk: samsung: exynos5410: Add TMU clock

Add clock for TMU to the Exynos5410 clock driver.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5410: Add I2C, HSI2C and RTC clocks
Krzysztof Kozlowski [Sat, 28 May 2016 09:54:30 +0000 (11:54 +0200)]
clk: samsung: exynos5410: Add I2C, HSI2C and RTC clocks

Add clocks for I2C, USI (HSI2C) and RTC to the Exynos5410 clock driver.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5410: Add serial3, USB and PWM clocks
Krzysztof Kozlowski [Sat, 28 May 2016 09:54:14 +0000 (11:54 +0200)]
clk: samsung: exynos5410: Add serial3, USB and PWM clocks

Just like other Exynos5 family SoCs, this one has four UARTs. Add
missing UART3 clocks to the Exynos5410 clock driver.

Add clocks for USB and PWM.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos3250: Move PLL rates data to init section
Krzysztof Kozlowski [Wed, 11 May 2016 12:12:16 +0000 (14:12 +0200)]
clk: samsung: exynos3250: Move PLL rates data to init section

The arrays with initialization data of PLLs can be moved to initconst
section because they are referenced only from other initconst-level
symbols.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: Fully constify mux parent names
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:14 +0000 (14:02 +0200)]
clk: samsung: Fully constify mux parent names

The PNAME macro defines array of strings for names of mux parents.
Although the strings itself were const but pointers to them were not thus
this data resided in initdata. Make this an array of const pointers to
const strings and move to initconst section.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5250: Move sleep init function to init section
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:13 +0000 (14:02 +0200)]
clk: samsung: exynos5250: Move sleep init function to init section

The exynos5250_clk_sleep_init() function can be moved to init section
because it is referenced only from other init-level calls.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5420: Move sleep init function and PLL data to init section
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:12 +0000 (14:02 +0200)]
clk: samsung: exynos5420: Move sleep init function and PLL data to init section

The exynos5420_clk_sleep_init() function and arrays with initialization
data of PLLs can be moved to init section because they are referenced
only from other init-level symbols.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5433: Move PLL rates data to init section
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:11 +0000 (14:02 +0200)]
clk: samsung: exynos5433: Move PLL rates data to init section

The arrays with initialization data of PLLs can be moved to initconst
section because they are referenced only from other initconst-level
symbols.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5433: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:10 +0000 (14:02 +0200)]
clk: samsung: exynos5433: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos7: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:09 +0000 (14:02 +0200)]
clk: samsung: exynos7: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5440: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:08 +0000 (14:02 +0200)]
clk: samsung: exynos5440: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5420: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:07 +0000 (14:02 +0200)]
clk: samsung: exynos5420: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5410: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:06 +0000 (14:02 +0200)]
clk: samsung: exynos5410: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5260: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:05 +0000 (14:02 +0200)]
clk: samsung: exynos5260: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos5250: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:04 +0000 (14:02 +0200)]
clk: samsung: exynos5250: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos4415: Move PLL rates data to init section
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:03 +0000 (14:02 +0200)]
clk: samsung: exynos4415: Move PLL rates data to init section

The arrays with initialization data of PLLs can be moved to initconst
section because they are referenced only from other initconst-level
symbols.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos4415: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:02 +0000 (14:02 +0200)]
clk: samsung: exynos4415: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos4: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:01 +0000 (14:02 +0200)]
clk: samsung: exynos4: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos4: Move local function to init section
Krzysztof Kozlowski [Wed, 11 May 2016 12:02:00 +0000 (14:02 +0200)]
clk: samsung: exynos4: Move local function to init section

The local exynos4_get_xom() function is referenced only from other
init-level functions.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos3250: Constify all clock initializers
Krzysztof Kozlowski [Wed, 11 May 2016 12:01:59 +0000 (14:01 +0200)]
clk: samsung: exynos3250: Constify all clock initializers

All of initialization data can be made const.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos3250: Move platform driver and of_device_id to init section
Krzysztof Kozlowski [Wed, 11 May 2016 12:01:58 +0000 (14:01 +0200)]
clk: samsung: exynos3250: Move platform driver and of_device_id to init section

The platform_driver and of_device_id structs can be moved to init
section because they are referenced only from subsys_initcall-level
function.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: Constify clock init data with clock arrays
Krzysztof Kozlowski [Wed, 11 May 2016 12:01:57 +0000 (14:01 +0200)]
clk: samsung: Constify clock init data with clock arrays

samsung_cmu_register_one() can accept pointer to const initialization
data: struct samsung_cmu_info. The members of the latter can also be
pointers to const data.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: clkout: Add support for Exynos5410
Krzysztof Kozlowski [Mon, 16 May 2016 08:26:47 +0000 (10:26 +0200)]
clk: samsung: clkout: Add support for Exynos5410

Add compatible for Exynos5410 so the PMU on this SoC would provide
CLKOUT.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: Remove useless check for return value of samsung_clk_init
Krzysztof Kozlowski [Mon, 9 May 2016 17:32:31 +0000 (19:32 +0200)]
clk: samsung: Remove useless check for return value of samsung_clk_init

The samsung_clk_init() cannot return NULL. Either it returns allocated
memory or it panics.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: samsung: exynos7: Don't gate CMU_{CCORE, FSYS0} blocks clock
Alim Akhtar [Thu, 14 Apr 2016 04:42:52 +0000 (10:12 +0530)]
clk: samsung: exynos7: Don't gate CMU_{CCORE, FSYS0} blocks clock

This patch adds CLK_IS_CRITICAL flag to ACLK_CCORE_133 and ACLK_FSYS0_200
clocks. These clocks are critical for accessing CMU_CCORE and CMU_FSYS0
blocks registers. Let these clocks to be enabled all the time.

Signed-off-by: Alim Akhtar <alim.akhtar@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agodt-bindings: clock: Add watchdog and SSS clock IDs to Exynos5410
Krzysztof Kozlowski [Wed, 1 Jun 2016 09:45:49 +0000 (11:45 +0200)]
dt-bindings: clock: Add watchdog and SSS clock IDs to Exynos5410

Add IDs for watchdog and Security SubSystem to Exynos5410.  Use the same
number as for Exynos5420 just in case in future these drivers were
merged.

Signed-off-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agoclk: nxp: Select MFD_SYSCON for creg driver
Ezequiel Garcia [Mon, 16 May 2016 15:45:36 +0000 (12:45 -0300)]
clk: nxp: Select MFD_SYSCON for creg driver

Commit 378523d15003 ("clk: add lpc18xx creg clk driver")
added a new clock driver but missed the proper MFD_SYSCON select.
Fix it.

Fixes: 378523d15003 ("clk: add lpc18xx creg clk driver")
Signed-off-by: Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>
Acked-by: Joachim Eastwood <manabian@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoMAINTAINERS: Add file patterns for clock device tree bindings
Geert Uytterhoeven [Sun, 22 May 2016 09:05:48 +0000 (11:05 +0200)]
MAINTAINERS: Add file patterns for clock device tree bindings

Submitters of device tree binding documentation may forget to CC
the subsystem maintainer if this is missing.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: Remove CLK_IS_ROOT flag
Stephen Boyd [Wed, 1 Jun 2016 21:56:57 +0000 (14:56 -0700)]
clk: Remove CLK_IS_ROOT flag

Now that we've gotten rid of all the users of this flag we can
retire the number, leaving a slot open for a future flag user.

Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agoclk: microchip: Remove CLK_IS_ROOT
Stephen Boyd [Wed, 1 Jun 2016 21:52:54 +0000 (14:52 -0700)]
clk: microchip: Remove CLK_IS_ROOT

This flag is a no-op now (see commit 47b0eeb3dc8a "clk: Deprecate
CLK_IS_ROOT", 2016-02-02) so remove it.

Cc: Purna Chandra Mandal <purna.mandal@microchip.com>
Cc: Ralf Baechle <ralf@linux-mips.org>
Cc: <linux-mips@linux-mips.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agopowerpc/512x: clk: Remove CLK_IS_ROOT
Stephen Boyd [Wed, 20 Apr 2016 01:31:12 +0000 (18:31 -0700)]
powerpc/512x: clk: Remove CLK_IS_ROOT

This flag is a no-op now (see commit 47b0eeb3dc8a "clk: Deprecate
CLK_IS_ROOT", 2016-02-02) so remove it.

Cc: Gerhard Sittig <gsi@denx.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agovexpress/spc: Remove CLK_IS_ROOT
Stephen Boyd [Wed, 20 Apr 2016 01:36:55 +0000 (18:36 -0700)]
vexpress/spc: Remove CLK_IS_ROOT

This flag is a no-op now (see commit 47b0eeb3dc8a "clk: Deprecate
CLK_IS_ROOT", 2016-02-02) so remove it.

Acked-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
8 years agodt-bindings: clock: Add TMU clock ID to Exynos5410
Krzysztof Kozlowski [Tue, 31 May 2016 18:39:00 +0000 (20:39 +0200)]
dt-bindings: clock: Add TMU clock ID to Exynos5410

Add ID for TMU clock to Exynos5410. Use the same number as for
Exynos5420 just in case in future these drivers were merged.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agodt-bindings: clock: Add I2C, HSI2C and RTC clock IDs to Exynos5410
Krzysztof Kozlowski [Sat, 28 May 2016 09:54:29 +0000 (11:54 +0200)]
dt-bindings: clock: Add I2C, HSI2C and RTC clock IDs to Exynos5410

Add IDs for I2C, USI (HSI2C) and RTC clocks to Exynos5410. Use the same
number as for Exynos5420 just in case in future these drivers are merged.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
8 years agodt-bindings: clock: Add PWM and USB clock IDs to Exynos5410
Krzysztof Kozlowski [Sat, 28 May 2016 09:54:13 +0000 (11:54 +0200)]
dt-bindings: clock: Add PWM and USB clock IDs to Exynos5410

Add IDs for PWM and USB clocks to Exynos5410. Use the same number as for
Exynos5420 just in case in future these drivers were merged.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Reviewed-by: Javier Martinez Canillas <javier@osg.samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>