cascardo/linux.git
7 years agoclk: stm32f4: fix error handling
Christophe JAILLET [Sun, 3 Jul 2016 06:06:43 +0000 (08:06 +0200)]
clk: stm32f4: fix error handling

This is likely that checking 'clks[idx]' instead of 'clks[n]' is
expected here.

Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1467526003-13318-1-git-send-email-christophe.jaillet@wanadoo.fr

7 years agoMerge branch 'clk-lpc32xx' into clk-next
Michael Turquette [Thu, 7 Jul 2016 00:51:42 +0000 (17:51 -0700)]
Merge branch 'clk-lpc32xx' into clk-next

7 years agoclk: lpc32xx: allow peripheral clock selection in device tree
Sylvain Lemieux [Fri, 3 Jun 2016 19:34:35 +0000 (15:34 -0400)]
clk: lpc32xx: allow peripheral clock selection in device tree

This patch add the support to select the peripheral clock (PERIPH)
as a parent clock source using the "assigned-clock-parents"
parameter in the device tree.

Signed-off-by: Sylvain Lemieux <slemieux@tycoint.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1464982475-24738-1-git-send-email-slemieux.tyco@gmail.com

7 years agoclk: sunxi: make clk-* explicitly non-modular
Paul Gortmaker [Mon, 4 Jul 2016 21:12:18 +0000 (17:12 -0400)]
clk: sunxi: make clk-* explicitly non-modular

We have the following file --> Kconfig mapping:

sunxi/clk-factors.c              obj-y
sunxi/clk-sun6i-apb0-gates.c     CONFIG_MFD_SUN6I_PRCM (bool)
sunxi/clk-sun6i-apb0.c           CONFIG_MFD_SUN6I_PRCM
sunxi/clk-sun6i-ar100.c          CONFIG_MFD_SUN6I_PRCM
sunxi/clk-sun8i-apb0.c           CONFIG_MFD_SUN6I_PRCM
sunxi/clk-sun9i-mmc.c            obj-y

Hence none of these are being built as a module by anyone.

Lets remove the modular code that is essentially orphaned, so that
when reading the drivers there is no doubt they are builtin-only.  All
drivers get mostly the same changes, so they are handled in batch.

Changes are (1) convert to builtin_platform_register, (2) use the
init.h header, (3) delete the MODULE_LICENCE/MODULE_AUTHOR and
associated tags, and (4) delete any ".remove" functions.

There was a stray module.h in a file not using any init.h or
module.h stuff, so we simply removed that one.

In two cases, 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.

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

Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Cc: Chen-Yu Tsai <wens@csie.org>
Cc: "Emilio López" <emilio@elopez.com.ar>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160704211220.5685-9-paul.gortmaker@windriver.com

7 years agoclk: oxnas: make it explicitly non-modular
Paul Gortmaker [Mon, 4 Jul 2016 21:12:15 +0000 (17:12 -0400)]
clk: oxnas: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/clk/Kconfig:config COMMON_CLK_OXNAS
drivers/clk/Kconfig:    bool "Clock driver for the OXNAS SoC 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.

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.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Neil Armstrong <narmstrong@baylibre.com>
Cc: linux-clk@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160704211220.5685-6-paul.gortmaker@windriver.com

7 years agoclk: Kconfig: Name RK818 in Kconfig for COMMON_CLK_RK808
Wadim Egorov [Thu, 2 Jun 2016 06:50:27 +0000 (08:50 +0200)]
clk: Kconfig: Name RK818 in Kconfig for COMMON_CLK_RK808

The RK808 and RK818 PMICs are using a similar register map.
We can reuse the clk driver for the RK818 PMIC. So let's add
the RK818 in the Kconfig description.

Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1464850228-17244-4-git-send-email-w.egorov@phytec.de

7 years agoclk: hi6220: Change syspll and media_syspll clk to 1.19GHz
Xinliang Liu [Wed, 29 Jun 2016 08:45:54 +0000 (16:45 +0800)]
clk: hi6220: Change syspll and media_syspll clk to 1.19GHz

In the bootloader of HiKey/96boards, syspll and media_syspll clk
was initialized to 1.19GHz. So, here changes it in kernel accordingly.

1.19GHz was chosen over 1.2GHz because at 1.19GHz we get more precise
HDMI pixel clock (1.19G/16 = 74.4MHz) for 1280x720p@60Hz HDMI
(74.25MHz required by standards). Closer pixel clock means better
compatibility to HDMI monitors.

Signed-off-by: Guodong Xu <guodong.xu@linaro.org>
Signed-off-by: Xinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1467189955-21694-1-git-send-email-guodong.xu@linaro.org

7 years agoclk: meson: make gxbb explicitly non-modular
Paul Gortmaker [Mon, 4 Jul 2016 21:12:12 +0000 (17:12 -0400)]
clk: meson: make gxbb explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/clk/meson/Kconfig:config COMMON_CLK_GXBB
drivers/clk/meson/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.

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 and ALIAS are no-op for non-modules.

We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-amlogic@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160704211220.5685-3-paul.gortmaker@windriver.com

7 years agoclk: meson8b: make it explicitly non-modular
Paul Gortmaker [Mon, 4 Jul 2016 21:12:11 +0000 (17:12 -0400)]
clk: meson8b: make it explicitly non-modular

The Kconfig currently controlling compilation of this code is:

drivers/clk/meson/Kconfig:config COMMON_CLK_MESON8B
drivers/clk/meson/Kconfig:      bool

...meaning that it currently is not being built as a module by anyone.
However a recent commit added a bunch of modular boilerplate to this
driver.

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/ALIAS are no-op when non-modular.

We also delete the MODULE_LICENSE tag etc. since all that information
was (or is now) contained at the top of the file in the comments.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Carlo Caione <carlo@caione.org>
Cc: Kevin Hilman <khilman@baylibre.com>
Cc: linux-clk@vger.kernel.org
Cc: linux-amlogic@lists.infradead.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/20160704211220.5685-2-paul.gortmaker@windriver.com

7 years agoclk: qcom: add EBI2 clocks to the MSM8660 GCC
Linus Walleij [Fri, 1 Jul 2016 15:54:01 +0000 (17:54 +0200)]
clk: qcom: add EBI2 clocks to the MSM8660 GCC

This adds the EBI2 2X and EBI2 clocks to the MSM8660/APQ8060
GCC. This is necessary to enable clocking of the external bus
interface so that peripherals on it can be mounted. These two
clocks are simple gated branch clocks.

In the vendor tree clock-8x60, these clocks have some kind of
dependency, the EBI2 clock has .depends = &ebi2_2x_clk.c,
what this means is undocumented, it doesn't seem like there
is a parent/child relationship, so the solution I chose was to
just have the EBI2 driver get and enable both clocks.

Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: imx7d: only enable minimum required clocks
Dong Aisheng [Thu, 30 Jun 2016 09:31:18 +0000 (17:31 +0800)]
clk: imx7d: only enable minimum required clocks

Formerly clk core does not support imx7d clock type well that all
its clock operations requires the parent clock on.
Therefore we enabled all clocks by default in clock driver
initialization for other module clocks operate well.

After patch 'clk: imx7d: using api with flag CLK_OPS_PARENT_ENABLE',
clk core can handle such clock type well, so we don't have to enable
them all by default anymore. Instead, we only enable a minimum required
set of clocks.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: imx7d: using api with flag CLK_OPS_PARENT_ENABLE
Dong Aisheng [Thu, 30 Jun 2016 09:31:17 +0000 (17:31 +0800)]
clk: imx7d: using api with flag CLK_OPS_PARENT_ENABLE

i.MX7D requires all clocks operations including enable/disable,
rate change and re-parent with its parent clock on.
Changing to the correct APIs to tell clk core such requirement.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: imx: add clk api for supporting CLK_OPS_PARENT_ENABLE clocks
Dong Aisheng [Thu, 30 Jun 2016 09:31:16 +0000 (17:31 +0800)]
clk: imx: add clk api for supporting CLK_OPS_PARENT_ENABLE clocks

IMX SoCs like i.MX7D requires using CLK_OPS_PARENT_ENABLE flags,
adding the corresponding clock APIs variants for easily to use.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: imx: re-order and concentrate the same type of clk api
Dong Aisheng [Thu, 30 Jun 2016 09:31:15 +0000 (17:31 +0800)]
clk: imx: re-order and concentrate the same type of clk api

Re-order and concentrate the same type of clk api for better
code maintenance.

Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: core: support clocks which requires parents enable (part 2)
Dong Aisheng [Thu, 30 Jun 2016 09:31:14 +0000 (17:31 +0800)]
clk: core: support clocks which requires parents enable (part 2)

On Freescale i.MX7D platform, all clocks operations, including
enable/disable, rate change and re-parent, requires its parent clock on.
Current clock core can not support it well.
This patch adding flag CLK_OPS_PARENT_ENABLE to handle this special case in
clock core that enable its parent clock firstly for each operation and
disable it later after operation complete.

The patch part 2 fixes set clock rate and set parent while its parent
is off. The most special case is for set_parent() operation which requires
all parents including both old and new one to be enabled at the same time
during the operation.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
[sboyd@codeaurora.org: Move set_rate tracepoint after prepare_enable]
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: core: support clocks which requires parents enable (part 1)
Dong Aisheng [Thu, 30 Jun 2016 09:31:13 +0000 (17:31 +0800)]
clk: core: support clocks which requires parents enable (part 1)

On Freescale i.MX7D platform, all clocks operations, including
enable/disable, rate change and re-parent, requires its parent
clock enable. Current clock core can not support it well.
This patch introduce a new flag CLK_OPS_PARENT_ENABLE to handle this
special case in clock core that enable its parent clock firstly for
each operation and disable it later after operation complete.

The patch part 1 fixes the possible disabling clocks while its parent
is off during kernel booting phase in clk_disable_unused_subtree().

Before the completion of kernel booting, clock tree is still not built
completely, there may be a case that the child clock is on but its
parent is off which could be caused by either HW initial reset state
or bootloader initialization.

Taking bootloader as an example, we may enable all clocks in HW by default.
And during kernel booting time, the parent clock could be disabled in its
driver probe due to calling clk_prepare_enable and clk_disable_unprepare.
Because it's child clock is only enabled in HW while its SW usecount
in clock tree is still 0, so clk_disable of parent clock will gate
the parent clock in both HW and SW usecount ultimately. Then there will
be a child clock is still on in HW but its parent is already off.

Later in clk_disable_unused(), this clock disable accessing while its
parent off will cause system hang due to the limitation of HW which
must require its parent on.

This patch simply enables the parent clock first before disabling
if flag CLK_OPS_PARENT_ENABLE is set in clk_disable_unused_subtree().
This is a simple solution and only affects booting time.

After kernel booting up the clock tree is already created, there will
be no case that child is off but its parent is off.
So no need do this checking for normal clk_disable() later.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: move clk_disable_unused after clk_core_disable_unprepare function
Dong Aisheng [Thu, 30 Jun 2016 09:31:12 +0000 (17:31 +0800)]
clk: move clk_disable_unused after clk_core_disable_unprepare function

No function level change, just moving code place.
clk_disable_unused function will need to call clk_core_prepare_enable/
clk_core_disable_unprepare when adding CLK_OPS_PARENT_ENABLE features.
So move it after clk_core_disable_unprepare to avoid adding forward
declared functions later.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: introduce clk_core_enable_lock and clk_core_disable_lock functions
Dong Aisheng [Thu, 30 Jun 2016 09:31:11 +0000 (17:31 +0800)]
clk: introduce clk_core_enable_lock and clk_core_disable_lock functions

This can be useful when clock core wants to enable/disable clocks.
Then we don't have to convert the struct clk_core to struct clk to call
clk_enable/clk_disable which is a bit un-align with exist using.

And after introduce clk_core_{enable|disable}_lock, we can refine
clk_enable and clk_disable a bit.

As well as clk_core_{enable|disable}_lock, we also added
clk_core_{prepare|unprepare}_lock and clk_core_prepare_enable/
clk_core_unprepare_disable for clock core to easily use.

Cc: Michael Turquette <mturquette@baylibre.com>
Cc: Stephen Boyd <sboyd@codeaurora.org>
Cc: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoMerge tag 'v4.8-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind...
Stephen Boyd [Sat, 2 Jul 2016 00:30:42 +0000 (17:30 -0700)]
Merge tag 'v4.8-rockchip-clk1' of git://git./linux/kernel/git/mmind/linux-rockchip into clk-next

Pull rockchip clk driver updates from Heiko Stuebner:

Placeholder for the rk3399 watchdog pclk, some newly exported
rk3228 clockids and a small fix for the not yet used spdif to
displayport clock on the rk3399.

* tag 'v4.8-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
  clk: rockchip: fix incorrect rk3399 spdif-DPTX divider bits
  clk: rockchip: export rk3228 MAC clocks
  clk: rockchip: rename rk3228 sclk_macphy_50m to sclk_mac_extclk
  clk: rockchip: export rk3228 audio clocks
  clk: rockchip: include rk3228 downstream muxes into fractional dividers
  clk: rockchip: fix incorrect rk3228 clock registers
  clk: rockchip: add clock-ids for rk3228 MAC clocks
  clk: rockchip: add clock-ids for rk3228 audio clocks
  clk: rockchip: add a dummy clock for the watchdog pclk on rk3399

7 years agoMerge tag 'tegra-for-4.8-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra...
Stephen Boyd [Sat, 2 Jul 2016 00:27:14 +0000 (17:27 -0700)]
Merge tag 'tegra-for-4.8-clk' of git://git./linux/kernel/git/tegra/linux into clk-next

Pull tegra clk driver updates from Thierry Reding:

Fixes and enhancements mostly for Tegra210 clocks that allow DSI and
HDMI to work on Tegra X1. There's also a refactoring, including fixes,
the USB PLL.

* tag 'tegra-for-4.8-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
  clk: tegra: Initialize UTMI PLL when enabling PLLU
  clk: tegra: Micro-optimize Tegra210 clock setup
  clk: tegra: Make sor_safe the parent of dpaux and dpaux1
  clk: tegra: Mark timer clock as critical
  clk: tegra: Enable sor1 and sor1_src on Tegra210
  clk: tegra: Squash sor1 safe/brick/src into a single mux
  clk: tegra: Disable spread spectrum on pll_d2
  clk: tegra: Fixup post dividers on Tegra210

7 years agoclk: fixed-factor: Allow for a few clocks to change the parent rate
Maxime Ripard [Wed, 22 Jun 2016 09:15:54 +0000 (11:15 +0200)]
clk: fixed-factor: Allow for a few clocks to change the parent rate

The only way for a fixed factor clock to change its rate would be to change
its parent rate.

Since passing blindly CLK_SET_RATE_PARENT might break a lot of platforms
that were relying on the fact that the parent rate wouldn't change,
introduce a compatible-based whitelist that will allow clocks to opt-in
that flag.

Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: rockchip: fix incorrect rk3399 spdif-DPTX divider bits
Xing Zheng [Thu, 30 Jun 2016 02:18:59 +0000 (10:18 +0800)]
clk: rockchip: fix incorrect rk3399 spdif-DPTX divider bits

The CLKSEL_CON32 bit_0 is controlled for spdif_8ch, not spdif_rec_dptx,
it should be bit_8, let's fix it.

Fixes: 115510053e5e ("clk: rockchip: add clock controller for the RK3399")
Reported-by: Chris Zhong <zyw@rock-chips.com>
Tested-by: Chris Zhong <zyw@rock-chips.com>
Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Cc: stable@vger.kernel.org
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
7 years agoclk: rockchip: export rk3228 MAC clocks
Xing Zheng [Tue, 21 Jun 2016 04:59:47 +0000 (12:59 +0800)]
clk: rockchip: export rk3228 MAC clocks

This patch exports related MAC clocks for dts reference.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
7 years agoclk: rockchip: rename rk3228 sclk_macphy_50m to sclk_mac_extclk
Xing Zheng [Tue, 21 Jun 2016 04:53:30 +0000 (12:53 +0800)]
clk: rockchip: rename rk3228 sclk_macphy_50m to sclk_mac_extclk

The sclk_macphy_50m is confusing, the sclk_mac_extclk describes
a external clock  clearly.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
7 years agoclk: rockchip: export rk3228 audio clocks
Xing Zheng [Tue, 21 Jun 2016 04:53:29 +0000 (12:53 +0800)]
clk: rockchip: export rk3228 audio clocks

This patch exports related i2s/spdif clocks for dts reference.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
7 years agoMerge branch 'v4.8-shared/clkids' into v4.8-clk/next
Heiko Stuebner [Thu, 30 Jun 2016 23:49:53 +0000 (01:49 +0200)]
Merge branch 'v4.8-shared/clkids' into v4.8-clk/next

7 years agoclk: rockchip: include rk3228 downstream muxes into fractional dividers
Xing Zheng [Tue, 21 Jun 2016 04:53:28 +0000 (12:53 +0800)]
clk: rockchip: include rk3228 downstream muxes into fractional dividers

During the initial conversion to the newly introduced combined fractional
dividers+muxes the rk3228 clocks were left out, so convert them now.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
7 years agoMerge tag 'imx-clk-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo...
Stephen Boyd [Thu, 30 Jun 2016 20:16:20 +0000 (13:16 -0700)]
Merge tag 'imx-clk-4.8' of git://git./linux/kernel/git/shawnguo/linux into clk-next

Pull i.MX clk driver updates from Shawn Guo:

 - A few correction and improvements on pllv3 driver around AV pll clock
   rate calculation, parent setting and power bit handling
 - Correct i.MX6UL GPT2 clock names
 - A couple of minor fixes on i.MX7D clock driver on DRAM clocks

* tag 'imx-clk-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  clk: imx6ul: fix gpt2 clock names
  clk: imx: refine the powerdown bit of clk-pllv3
  clk: imx: clk-pllv3: fix incorrect handle of enet powerdown bit
  clk: imx: fix pll clock parents
  clk: imx7d: correct dram pll type
  clk: imx7d: correct dram root clk parent select
  clk: imx: correct AV PLL rate formula

7 years agoMerge branch 'clk-hw-unregister-fixed-rate' into clk-next
Stephen Boyd [Thu, 30 Jun 2016 20:07:58 +0000 (13:07 -0700)]
Merge branch 'clk-hw-unregister-fixed-rate' into clk-next

* clk-hw-unregister-fixed-rate:
  clk: fixed-rate: add clk_hw_unregister_fixed_rate()

7 years agoclk: fixed-rate: add clk_hw_unregister_fixed_rate()
Masahiro Yamada [Sun, 22 May 2016 05:33:35 +0000 (14:33 +0900)]
clk: fixed-rate: add clk_hw_unregister_fixed_rate()

This will be used to migrate to the clk_hw APIs.

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: hisilicon: hi3519: add driver remove path and fix some issues
Jiancheng Xue [Wed, 15 Jun 2016 06:26:38 +0000 (14:26 +0800)]
clk: hisilicon: hi3519: add driver remove path and fix some issues

1. Add driver remove path.
2. Fix some issues.
   -Fix the ordering issue about clock provider being published.
   -Add error checking upon registering clocks.

Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: hisilicon: add hisi_clk_unregister_* functions
Jiancheng Xue [Wed, 15 Jun 2016 06:26:37 +0000 (14:26 +0800)]
clk: hisilicon: add hisi_clk_unregister_* functions

Add hisi_clk_unregister_* functions.

Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: hisilicon: add error processing for hisi_clk_register_* functions
Jiancheng Xue [Wed, 15 Jun 2016 06:26:36 +0000 (14:26 +0800)]
clk: hisilicon: add error processing for hisi_clk_register_* functions

Add error processing for hisi_clk_register_* functions.

Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: hisilicon: add hisi_clk_alloc function.
Jiancheng Xue [Wed, 15 Jun 2016 06:26:35 +0000 (14:26 +0800)]
clk: hisilicon: add hisi_clk_alloc function.

Before, there was an ordering issue that the clock provider
had been published in hisi_clk_init before it could provide
valid clocks to consumers. hisi_clk_alloc is just used to
allocate memory space for struct hisi_clock_data. It makes
it possible to publish the provider after the clocks are ready.

Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoreset: hisilicon: change the definition of hisi_reset_init
Jiancheng Xue [Wed, 15 Jun 2016 06:26:34 +0000 (14:26 +0800)]
reset: hisilicon: change the definition of hisi_reset_init

Change the input arguments type to struct platform_device pointer.

Signed-off-by: Jiancheng Xue <xuejiancheng@hisilicon.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: s2mps11: Migrate to clk_hw based OF and registration APIs
Stephen Boyd [Wed, 1 Jun 2016 23:15:24 +0000 (16:15 -0700)]
clk: s2mps11: Migrate to clk_hw based OF and registration APIs

Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in
these drivers, 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: Andi Shyti <andi.shyti@samsung.com>
Reviewed-by: Krzysztof Kozlowski <k.kozlowski@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: stm32f4: Migrate to clk_hw based OF and registration APIs
Stephen Boyd [Wed, 1 Jun 2016 23:15:29 +0000 (16:15 -0700)]
clk: stm32f4: Migrate to clk_hw based OF and registration APIs

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

Cc: Daniel Thompson <daniel.thompson@linaro.org>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: bcm: iproc: Migrate to clk_hw based registration and OF APIs
Stephen Boyd [Wed, 1 Jun 2016 23:15:04 +0000 (16:15 -0700)]
clk: bcm: iproc: 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 while registering clks in
these drivers, allowing us to move closer to a clear split of
consumer and provider clk APIs.

Cc: Jon Mason <jonmason@broadcom.com>
Cc: Simran Rai <ssimran@broadcom.com>
Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org>
Tested-by: Ray Jui <rjui@broadcom.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: u300: Migrate to clk_hw based registration APIs
Stephen Boyd [Wed, 1 Jun 2016 23:15:31 +0000 (16:15 -0700)]
clk: u300: Migrate to clk_hw based registration APIs

Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in
these drivers, 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: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 years agoclk: nomadik: Migrate to clk_hw based OF and registration APIs
Stephen Boyd [Wed, 1 Jun 2016 23:15:19 +0000 (16:15 -0700)]
clk: nomadik: Migrate to clk_hw based OF and registration APIs

Now that we have clk_hw based provider APIs to register clks, we
can get rid of struct clk pointers while registering clks in
these drivers, 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: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
7 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>
7 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

7 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>
7 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>
7 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>
7 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

7 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>
7 years agoclk: tegra: Initialize UTMI PLL when enabling PLLU
Andrew Bresticker [Thu, 26 May 2016 16:41:31 +0000 (12:41 -0400)]
clk: tegra: Initialize UTMI PLL when enabling PLLU

Move the UTMI PLL initialization code form clk-tegra<chip>.c files into
clk-pll.c. UTMI PLL was being configured and set in HW control right
after registration. However, when the clock init_table is processed and
child clks of PLLU are enabled, it will call in and enable PLLU as
well, and initiate SW enabling sequence even though PLLU is already in
HW control. This leads to getting UTMIPLL stuck with a SEQ_BUSY status.

Doing the initialization once during pllu_enable means we configure it
properly into HW control.

A side effect of the commonization/localization of the UTMI PLL init
code, is that it corrects some errors that were present for earlier
generations. For instance, in clk-tegra124.c, it used to have:

    #define UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(x) (((x) & 0x1f) << 6)

when the correct shift to use is present in the new version:

    #define UTMIP_PLL_CFG1_ENABLE_DLY_COUNT(x) (((x) & 0x1f) << 27)

which matches the Tegra124 TRM register definition.

Signed-off-by: Andrew Bresticker <abrestic@chromium.org>
[rklein: Merged in some later fixes for potential deadlocks]
Signed-off-by: Rhyland Klein <rklein@nvidia.com>
[treding: coding style bike-shedding, remove unused variable]
Signed-off-by: Thierry Reding <treding@nvidia.com>
7 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

7 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./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

7 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>
7 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./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

7 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>
7 years agoclk: tegra: Micro-optimize Tegra210 clock setup
Thierry Reding [Thu, 23 Jun 2016 10:52:31 +0000 (12:52 +0200)]
clk: tegra: Micro-optimize Tegra210 clock setup

sor_safe being the parent of the dpaux and dpaux1 clocks, it's not only
natural, but also slightly more efficient, to initialize it before its
children. This avoids orphaning the dpaux and dpaux1 clocks only to get
them reparented when the sor_safe clock is registered.

Acked-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
7 years agoclk: tegra: Make sor_safe the parent of dpaux and dpaux1
Thierry Reding [Thu, 23 Jun 2016 10:52:30 +0000 (12:52 +0200)]
clk: tegra: Make sor_safe the parent of dpaux and dpaux1

It turns out that sor_safe, rather than pll_p, is the parent of the
dpaux and dpaux1 clocks.

Acked-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Acked-by: Rhyland Klein <rklein@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
7 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

7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 years agoclk: tegra: Mark timer clock as critical
Thierry Reding [Tue, 21 Jun 2016 15:30:35 +0000 (17:30 +0200)]
clk: tegra: Mark timer clock as critical

The timer clock feeds the timer block, which, among other things, is
used to drive the SOR lane sequencer. Since the Tegra timer driver is
not enabled on 64-bit ARM, nothing currently claims that clock and it
gets disabled by the common clock framework at late_init time.

Given the non-obvious dependencies, the timer clock can be considered
a critical part of the SoC infrastructure, requiring its clock source
to be always on.

Acked-by: Rhyland Klein <rklein@nvidia.com>
Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
7 years agoclk: rockchip: fix incorrect rk3228 clock registers
Xing Zheng [Tue, 21 Jun 2016 04:53:27 +0000 (12:53 +0800)]
clk: rockchip: fix incorrect rk3228 clock registers

Due to copy and paste carelessly, RK3288_CLKxxx references are incorrect,
we need to fix them.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
7 years agoclk: rockchip: add clock-ids for rk3228 MAC clocks
Xing Zheng [Tue, 21 Jun 2016 04:59:47 +0000 (12:59 +0800)]
clk: rockchip: add clock-ids for rk3228 MAC clocks

This patch exports related MAC clocks for dts reference.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
7 years agoclk: rockchip: add clock-ids for rk3228 audio clocks
Xing Zheng [Tue, 21 Jun 2016 04:53:29 +0000 (12:53 +0800)]
clk: rockchip: add clock-ids for rk3228 audio clocks

This patch exports related i2s/spdif clocks for dts reference.

Signed-off-by: Xing Zheng <zhengxing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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>
7 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
  ...

7 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>
7 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>
7 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 ‘wm8650_find_pll_bits’:
clk-vt8500.c:430:12: ‘best_div2’ may be used uninitialized in this function
clk-vt8500.c:429:12: ‘best_div1’ may be used uninitialized in this function
clk-vt8500.c:428:14: ‘best_mul’ may be used uninitialized in this function
clk-vt8500.c: In function ‘wm8750_find_pll_bits’:
clk-vt8500.c:509:12: ‘best_div2’ may be used uninitialized in this function
clk-vt8500.c:508:12: ‘best_div1’ may be used uninitialized in this function
clk-vt8500.c:507:14: ‘best_mul’ may be used uninitialized in this function
clk-vt8500.c: In function ‘wm8850_find_pll_bits’:
clk-vt8500.c:560:12: ‘best_div2’ may be used uninitialized in this function
clk-vt8500.c:559:12: ‘best_div1’ may be used uninitialized in this function
clk-vt8500.c:558:14: ‘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>
7 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>
7 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>
7 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>
7 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>
7 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

7 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./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

7 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>
7 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

7 years agoclk: tegra: Enable sor1 and sor1_src on Tegra210
Thierry Reding [Thu, 9 Jun 2016 15:47:17 +0000 (17:47 +0200)]
clk: tegra: Enable sor1 and sor1_src on Tegra210

Make the sor1 and sor1_src clocks available on Tegra210. They will be
used by the display driver to support HDMI and DP.

Signed-off-by: Thierry Reding <treding@nvidia.com>
7 years agoclk: tegra: Squash sor1 safe/brick/src into a single mux
Thierry Reding [Thu, 9 Jun 2016 15:34:51 +0000 (17:34 +0200)]
clk: tegra: Squash sor1 safe/brick/src into a single mux

The sor1 clock on Tegra210 is structured in the following way:

    +-------+
    | pllp  |---+
    +-------+   |    +--------------+       +-----------+
                +----|              |       | sor_safe  |
    +-------+        |              |       +-----------+
    | plld  |--------|              |             |
    +-------+        |              |       +-----------+
                     |   sor1_src   |-------|           |
    +-------+        |              |       +-----------+
    | plld2 |--------|              |             |
    +-------+        |              |             |
                +----|              |             |
    +-------+   |    +--------------+             |
    | clkm  |---+                           +-----------+
    +-------+        +--------------+       |           |
                     |  sor1_brick  |-------|   sor1    |
                     +--------------+       |           |
                                            +-----------+

This is impractical to represent in a clock tree, though, because there
is no name for the mux that has sor_safe and sor1_src as parents. It is
also much more cumbersome to deal with the additional mux because users
of these clocks (the display driver) would have to juggle with an extra
mux for no real reason.

To simply things, the above is squashed into two muxes instead, so that
it looks like this:

    +-------+
    | pllp  |---+
    +-------+   |    +--------------+       +-----------+
                +----|              |       | sor_safe  |
    +-------+        |              |       +-----------+
    | plld  |--------|              |             |
    +-------+        |              |       +-----------+
                     |   sor1_src   |-------|   sor1    |
    +-------+        |              |       +-----------+
    | plld2 |--------|              |           |   |
    +-------+        |              |           |   |
                +----|              |           |   |
    +-------+   |    +--------------+           |   |
    | clkm  |---+                               |   |
    +-------+        +--------------+           |   |
                     |  sor1_brick  |-----------+---+
                     +--------------+

This still very accurately represents the hardware. Note that sor1 has
sor1_brick as input twice, that's because bit 1 in the mux selects the
sor1_brick irrespective of bit 0.

Signed-off-by: Thierry Reding <treding@nvidia.com>
7 years agoclk: tegra: Disable spread spectrum on pll_d2
Thierry Reding [Wed, 5 Aug 2015 14:29:40 +0000 (16:29 +0200)]
clk: tegra: Disable spread spectrum on pll_d2

Enabling spread spectrum on pll_d2 can lead to issues with display
modes. HDMI monitors, for example, would report "Signal Error" and
some modes driven over DisplayPort would generate fuzzy horizontal
bands.

Signed-off-by: Thierry Reding <treding@nvidia.com>
7 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

7 years agoclk: imx6ul: fix gpt2 clock names
Dong Aisheng [Mon, 13 Jun 2016 07:38:30 +0000 (15:38 +0800)]
clk: imx6ul: fix gpt2 clock names

fix gpt2 clock names

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
7 years agoclk: imx: refine the powerdown bit of clk-pllv3
Dong Aisheng [Mon, 13 Jun 2016 12:24:52 +0000 (20:24 +0800)]
clk: imx: refine the powerdown bit of clk-pllv3

The powerdown bit is a bit confused, let's change it to power_bit
to relfect both powerdown and powerup case according to different
plls.

Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
7 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>