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According to datasheet (Chapter 29.16.13, PMC Programmable Clock Register)
there are only two programmable clocks on SAM9X60.
Fixes: 01e2113de9a5 ("clk: at91: add sam9x60 pmc driver")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/1602686072-28296-1-git-send-email-claudiu.beznea@microchip.com
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Clocks that don't have a divider are in our case all marked with the
CLK_SET_RATE_PARENT flag. In this case, the .round_rate implementation
should modify the value pointed to by parent_rate, in order to propagate
the rate change to the parent, as explained in the documentation of
clk_set_rate().
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200903015048.3091523-5-paul@crapouillou.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The custom clocks have custom functions to round, get or set their rate.
Therefore, we can't assume that they need the CLK_SET_RATE_PARENT flag.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200903015048.3091523-4-paul@crapouillou.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
CLK_SET_RATE_GATE means that the clock must be gated when being
reclocked. This is not the case for the PLLs in Ingenic SoCs.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200903015048.3091523-3-paul@crapouillou.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Use the readl_poll_timeout() function instead of rolling our own
busy-wait loops. This makes the code simpler.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200903015048.3091523-2-paul@crapouillou.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The to_clk_info() previously had a BUG_ON() to check that it was only
called for PLL clocks. Yet, all the other clocks were doing the exact
same thing the macro does, in-line.
Move the to_clk_info() macro to the top of the file, remove the
hardcoded BUG_ON(), and use it everywhere it makes sense.
Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200903015048.3091523-1-paul@crapouillou.net
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
In the implementation of bcm2835_register_pll(), the allocated pll is
leaked if devm_clk_hw_register() fails to register hw. Release pll if
devm_clk_hw_register() fails.
Signed-off-by: Navid Emamdoost <navid.emamdoost@gmail.com>
Link: https://lore.kernel.org/r/20200809231202.15811-1-navid.emamdoost@gmail.com
Fixes: 41691b8862e2 ("clk: bcm2835: Add support for programming the audio domain clocks")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Fix variable set but not used compilation warning.
Fixes: 43b1bb4a9b3e ("clk: at91: clk-sam9x60-pll: re-factor to support plls with multiple outputs")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Link: https://lore.kernel.org/r/1598338751-20607-4-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
SAMA5D2 datasheet specifies on chapter 33.22.8 (PMC Clock Generator
Main Oscillator Register) that writing any value other than
0x37 on KEY field aborts the write operation. Use the key when
selecting main clock parent.
Fixes: 27cb1c2083373 ("clk: at91: rework main clk implementation")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/1598338751-20607-3-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
There is no need to check parent_name variable while assigning it to
init.parent_names. parent_name variable is already checked at
the beginning of at91_clk_register_peripheral() function.
Fixes: 6114067e437eb ("clk: at91: add PMC peripheral clocks")
Signed-off-by: Claudiu Beznea <claudiu.beznea@microchip.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/1598338751-20607-2-git-send-email-claudiu.beznea@microchip.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
In case of error, the function clk_register() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check
should be replaced with IS_ERR().
Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Link: https://lore.kernel.org/r/20200921034522.9077-1-vulab@iscas.ac.cn
Acked-by: Barry Song <baohua@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Constify a couple of static struct clk_ops that are not modified. Their
only usage is inside the macros and their address is passed to
clk_register_composite() which takes pointers to const struct clk_ops.
This allows the compiler to put them in read-only memory.
Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Link: https://lore.kernel.org/r/20200922184715.1854-1-rikard.falkeborn@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
We've discovered that disabling the so called Ethernet PLL causes reset of
the devices consuming its outgoing clock. The resets happen automatically
even if each underlying clock gate is turned off. Due to that we can't
disable the Ethernet PLL until the kernel is prepared for the corresponding
resets. So for now just mark the PLL clock provider as critical.
Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru>
Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru>
Cc: linux-mips@vger.kernel.org
Link: https://lore.kernel.org/r/20200920110335.18034-1-Sergey.Semin@baikalelectronics.ru
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Using the fractional dividers requires some additional power bits to be
set.
The fractional power bits are not documented and the current heuristic
for setting them seems be insufficient for some cases. Just always set all
the fractional power bits when in fractional mode.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20201001085948.21412-2-alexandru.ardelean@analog.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The axi-clkgen has (optional) fractional dividers on the output clock
divider and feedback clock divider path. Utilizing the fractional dividers
allows for a better resolution of the output clock, being able to
synthesize more frequencies.
Rework the driver support to support the fractional register fields, both
for setting a new rate as well as reading back the current rate from the
hardware.
For setting the rate if no perfect divider settings were found in
non-fractional mode try again in fractional mode and see if better settings
can be found. This appears to be the recommended mode of operation.
Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Link: https://lore.kernel.org/r/20201001085948.21412-1-alexandru.ardelean@analog.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the display clock controller found on SM8150 and SM8250.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Tested-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org> (SM8250)
Link: https://lore.kernel.org/r/20200927190653.13876-3-jonathan@marek.ca
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the video clock controller found on SM8250 based devices.
Derived from the downstream driver.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Link: https://lore.kernel.org/r/20200923160635.28370-6-jonathan@marek.ca
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add support for the video clock controller found on SM8150 based devices.
Derived from the downstream driver.
Signed-off-by: Jonathan Marek <jonathan@marek.ca>
Link: https://lore.kernel.org/r/20200923160635.28370-5-jonathan@marek.ca
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This change adds GDSCs, resets and most of the missing
clocks to the msm8994 GCC driver. The remaining ones
are of local_vote_clk and gate_clk type, which are not
yet supported upstream. Also reorder them to match the
original downstream driver.
Signed-off-by: Konrad Dybcio <konradybcio@gmail.com>
Link: https://lore.kernel.org/r/20201005145855.149206-1-konradybcio@gmail.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add the following clock support for MT8167 SoC: topckgen, apmixedsys,
infracfg, audsys, imgsys, mfgcfg, vdecsys.
Signed-off-by: Fabien Parent <fparent@baylibre.com>
Link: https://lore.kernel.org/r/20200918132303.2831815-2-fparent@baylibre.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
We can get down to this return value from ERR_CAST() without
initializing hw. Set it to -ENOMEM so that we always return something
sane.
Fixes the following smatch warning:
drivers/clk/rockchip/clk-half-divider.c:228 rockchip_clk_register_halfdiv() error: uninitialized symbol 'hw'.
drivers/clk/rockchip/clk-half-divider.c:228 rockchip_clk_register_halfdiv() warn: passing zero to 'ERR_CAST'
Cc: Elaine Zhang <zhangqing@rock-chips.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Fixes: 956060a52795 ("clk: rockchip: add support for half divider")
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
- A series from Fabio Estevam to remove legacy non-DT i.MX platforms
support and related board files. This is a natural move, as the
platforms had been converted to DT for years, and we have not seen
any users around these legacy non-DT support for a while.
- Enable cpufreq support for i.MX7ULP platform.
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Merge tag 'imx-soc-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/soc
i.MX SoC update for 5.10:
- A series from Fabio Estevam to remove legacy non-DT i.MX platforms
support and related board files. This is a natural move, as the
platforms had been converted to DT for years, and we have not seen
any users around these legacy non-DT support for a while.
- Enable cpufreq support for i.MX7ULP platform.
* tag 'imx-soc-5.10' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux: (26 commits)
clk: imx: imx35: Remove mx35_clocks_init()
clk: imx: imx31: Remove mx31_clocks_init()
clk: imx: imx27: Remove mx27_clocks_init()
ARM: imx: Remove unused definitions
ARM: imx35: Retrieve the IIM base address from devicetree
ARM: imx3: Retrieve the AVIC base address from devicetree
ARM: imx3: Retrieve the CCM base address from devicetree
ARM: imx31: Retrieve the IIM base address from devicetree
ARM: imx27: Retrieve the CCM base address from devicetree
ARM: imx27: Retrieve the SYSCTRL base address from devicetree
ARM: imx: Remove remnant board file support pieces
ARM: imx: Remove imx device directory
ARM: imx: Remove iomux-v3 board code
ARM: imx3: Remove imx3 soc_init()
ARM: imx31: Remove remaining i.MX31 board code
ARM: imx27: Retrieve AVIC base address from devicetree
ARM: imx27: Get rid of mm-imx27.c
ARM: imx27: Remove iomux-v1 board code
ARM: imx27: Remove imx27_soc_init()
ARM: imx7ulp: enable cpufreq
...
Link: https://lore.kernel.org/r/20200923073009.23678-2-shawnguo@kernel.org
Signed-off-by: Olof Johansson <olof@lixom.net>
The provider variable is already dereferenced earlier in this function.
Drop the check for NULL as it is impossible.
Found with smatch
drivers/clk/tegra/clk-tegra210-emc.c:131 tegra210_clk_emc_set_rate() warn: variable dereferenced before check 'provider' (see line 124)
Cc: Joseph Lo <josephl@nvidia.com>
Cc: Thierry Reding <treding@nvidia.com>
Fixes: 0ac65fc946d3 ("clk: tegra: Implement Tegra210 EMC clock")
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Link: https://lore.kernel.org/r/20200922191641.2305144-1-sboyd@kernel.org
Acked-by: Thierry Reding <treding@nvidia.com>
Fix a memory leak induced by not calling clk_put after doing of_clk_get.
Reported-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Link: https://lore.kernel.org/r/20200907082600.454-3-t-kristo@ti.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The clk pointer passed to omap2_clk_(deny|allow)_idle can be NULL, so
add checks for this.
Reported-by: Dan Murphy <dmurphy@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Link: https://lore.kernel.org/r/20200907082600.454-2-t-kristo@ti.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Currently, we request exact clock rates from the firmware to be set with
set_rate. Due to some rounding errors and internal functionality of the
firmware itself, this can fail. Thus, add some slack to the set_rate
functionality so that we are always guaranteed to pass. The firmware
always attempts to use frequency as close to the target freq as
possible despite the slack given here.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Link: https://lore.kernel.org/r/20200907085740.1083-4-t-kristo@ti.com
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Cache results of the latest query rate operation. This optimizes the
firmware interface a bit, avoiding unnecessary calls to firmware if we
know the result already; the firmware interface is pretty expensive
to use for query rate functionality.
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Link: https://lore.kernel.org/r/20200907085740.1083-3-t-kristo@ti.com
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The DT clock probe loop incorrectly terminates after processing "clocks"
only, fix this by re-starting the loop when all entries for current
DT property have been parsed.
Fixes: 8e48b33f9def ("clk: keystone: sci-clk: probe clocks from DT instead of firmware")
Reported-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Tero Kristo <t-kristo@ti.com>
Link: https://lore.kernel.org/r/20200907085740.1083-2-t-kristo@ti.com
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
./drivers/clk/mediatek/clk-mt6765.c:912:3-8: No need to set .owner here. The core will do it.
Remove .owner field if calls are used which set it automatically
Generated by: scripts/coccinelle/api/platform_no_drv_owner.cocci
Fixes: 1aca9939bf72 ("clk: mediatek: Add MT6765 clock support")
Signed-off-by: Zou Wei <zou_wei@huawei.com>
Link: https://lore.kernel.org/r/1600761065-71353-1-git-send-email-zou_wei@huawei.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
drivers/clk/socfpga/clk-agilex.c:24:37: warning: ‘cntr_mux’ defined but not used [-Wunused-const-variable=]
static const struct clk_parent_data cntr_mux[] = {
^~~~~~~~
There is no caller in tree, so can remove it.
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Link: https://lore.kernel.org/r/20200915020950.4688-1-yuehaibing@huawei.com
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
'err' is assigned but never read:
/drivers/clk/clk-si5341.c: In function ‘si5341_output_get_parent’:
drivers/clk/clk-si5341.c:886:6: warning: variable ‘err’ set but not used [-Wunused-but-set-variable]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200916161740.14173-5-krzk@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
'clk' is assigned but never read:
drivers/clk/mmp/clk-of-pxa1928.c: In function ‘pxa1928_pll_init’:
drivers/clk/mmp/clk-of-pxa1928.c:71:14: warning: variable ‘clk’ set but not used [-Wunused-but-set-variable]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200916161740.14173-4-krzk@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The at91sam9g45_pcr_layout is not used so drop it to fix build warning:
drivers/clk/at91/at91sam9g45.c:49:36: warning:
'at91sam9g45_pcr_layout' defined but not used [-Wunused-const-variable=]
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20200916161740.14173-1-krzk@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add missing kerneldoc to fix compile warning:
drivers/clk/davinci/da8xx-cfgchip.c:578: warning: Function parameter or member 'dev' not described in 'da8xx_cfgchip_register_usb1_clk48'
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: David Lechner <david@lechnology.com>
Link: https://lore.kernel.org/r/20200916161740.14173-3-krzk@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Add missing kerneldoc to fix compile warnings like:
drivers/clk/clk-fixed-factor.c:211: warning: Function parameter or member 'node' not described in 'of_fixed_factor_clk_setup'
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200916161740.14173-2-krzk@kernel.org
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The driver was using subsys_initcall() because in old times deferred
probe was not supported everywhere and specific ordering was needed.
Since probe deferral works fine and specific ordering is discouraged
(hides dependencies between drivers and couples their boot order), the
driver can be converted to regular module_platform_driver.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Link: https://lore.kernel.org/r/20200921203558.19554-1-krzk@kernel.org
Tested-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
To use QHD or higher, we need to modify the pixel_bvb_clk value. So
add register to control this clock.
Signed-off-by: Hoegeun Kwon <hoegeun.kwon@samsung.com>
Link: https://lore.kernel.org/r/20200901040759.29992-2-hoegeun.kwon@samsung.com
Reviewed-by: Maxime Ripard <mripard@kernel.org>
Acked-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Tested-by: Nicolas Saenz Julienne <nsaenzjulienne@suse.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
The ChipID IO region has it's own clock, which is being disabled while
scanning for unused clocks. It turned out that some CPU hotplug, CPU idle
or even SOC firmware code depends on the reads from that area. Fix the
mysterious hang caused by entering deep CPU idle state by ignoring the
'chipid' clock during unused clocks scan, as there are no direct clients
for it which will keep it enabled.
Fixes: e062b571777f ("clk: exynos4: register clocks using common clock framework")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Link: https://lore.kernel.org/r/20200922124046.10496-1-m.szyprowski@samsung.com
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
This is a set of small fixes for the Tegra clock driver.
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Merge tag 'for-5.10-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into clk-fixes
Pull Tegra clk driver fixes from Thierry Reding:
This is a set of small fixes for the Tegra clock driver.
* tag 'for-5.10-clk' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
clk: tegra: Fix missing prototype for tegra210_clk_register_emc()
clk: tegra: Always program PLL_E when enabled
clk: tegra: Capitalization fixes
