During PSCI system suspend, R-Car Gen3 SoCs are powered down, and their
clock register state is lost. Note that as the boot loader skips most
initialization after system resume, clock register state differs from
the state encountered during normal system boot, too.
Hence after s2ram, some operations may fail because module clocks are
disabled, while drivers expect them to be still enabled. E.g. EtherAVB
fails when Wake-on-LAN has been enabled using "ethtool -s eth0 wol g":
ravb e6800000.ethernet eth0: failed to switch device to config mode
ravb e6800000.ethernet eth0: device will be stopped after h/w processes are done.
ravb e6800000.ethernet eth0: failed to switch device to config
PM: Device e6800000.ethernet failed to resume: error -110
In addition, some module clocks that were disabled by
clk_disable_unused() may have been re-enabled, wasting power.
To fix this, restore all bits of the SMSTPCR registers that represent
clocks under control of Linux.
Notes:
- While this fixes EtherAVB operation after resume from s2ram,
EtherAVB cannot be used as an actual wake-up source from s2ram, only
from s2idle, due to PSCI limitations,
- To avoid overhead on platforms not needing it, the suspend/resume
code has a build time dependency on sleep and PSCI support, and a
runtime dependency on PSCI.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
The RZ family of Renesas SoCs has several different subfamilies (RZ/A,
RZ/G, RZ/N, and RZ/T). Clarify that the renesas,rz-cpg-clocks DT
bindings and clk-rz driver apply to RZ/A1 only.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Rob Herring <robh@kernel.org>
The Amlogic Meson GX SoCs needs these two clocks to power up the
VPU power domain.
These two clocks are similar to the MALI clocks by having a glitch-free
mux and two similar clocks with gate, divider and muxes.
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
[narmstrong: removed the CLK_IGNORE_UNUSED on muxes and dividers]
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
Add the clkids for the clocks feeding the Video Processing Unit.
Acked-by: Jerome Brunet <jbrunet@baylibre.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
please pull the following:
- Danilo removes the clock provider driver stubs which are no longer needed
now that we have a proper CPRMAN clock provider driver
- Stefan moves the SMP startup code for BCM2836 from the interrupt controller
driver down to where it belongs in the architecture code, this was requested
by Marc Zyngier before comitting any fixes to that code
- Phil provides a fix for a future Raspberry Pi firmware which will make the
secondary cores wait for an event and therefore requires the CPU onlining
other cores to send such event (along with the appropriate barrier)
- Florian fixes the BRCMSTB UART debug stub to work correctly when using an
ARM BE8 kernel since there were some missing register read swapping needed
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Merge tag 'arm-soc/for-4.15/soc' of http://github.com/Broadcom/stblinux into next/soc
Pull "Broadcom soc changes for 4.15 (part 1)" from Florian Fainelli:
This pull request contains Broadcom ARM-based SoC/Kconfig changes for 4.15
please pull the following:
- Danilo removes the clock provider driver stubs which are no longer needed
now that we have a proper CPRMAN clock provider driver
- Stefan moves the SMP startup code for BCM2836 from the interrupt controller
driver down to where it belongs in the architecture code, this was requested
by Marc Zyngier before comitting any fixes to that code
- Phil provides a fix for a future Raspberry Pi firmware which will make the
secondary cores wait for an event and therefore requires the CPU onlining
other cores to send such event (along with the appropriate barrier)
- Florian fixes the BRCMSTB UART debug stub to work correctly when using an
ARM BE8 kernel since there were some missing register read swapping needed
* tag 'arm-soc/for-4.15/soc' of http://github.com/Broadcom/stblinux:
ARM: brcmstb: Add appropriate ARM_BE8() macros for swapping
ARM: bcm2836: Send event when onlining other cores
irqchip: bcm2836: Move SMP startup code to arch/arm (v2)
clk: bcm2835: remove remains from stub clk driver
These structures are only passed to the functions tegra_clk_register_pll,
tegra_clk_register_pll{e/u} or tegra_periph_clk_init during the init
phase. These functions modify the structures only during the init phase
and after that the structures are never modified. Therefore, make them
__ro_after_init.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This clock was previously called sor1_src and was modelled as an input
to the sor1 module clock. However, it's really an output clock that can
be fed either from the safe, the sor1_pad_clkout or the sor1 module
clocks. sor1 itself can take input from either of the display PLLs.
The same implementation for the sor1_out clock is used on Tegra186, so
this nicely lines up both SoC generations to deal with this clock in a
uniform way.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Instead of open-coding the same pattern repeatedly, reuse the newly
introduced tegra_clk_register_periph_data() helper that will unpack
the initialization structure.
Signed-off-by: Thierry Reding <treding@nvidia.com>
There is a common pattern that registers individual peripheral clocks
from an initialization table. Add a common implementation to remove the
duplication from various call sites.
Signed-off-by: Thierry Reding <treding@nvidia.com>
Check return code in BPMP response message(s). The typical error case is
when a clock operation is attempted with an invalid clock identifier.
Also remove error print from call to clk_get_info() as the
implementation loops through the range of all possible identifiers, yet
the operation is expected to error out when the clock ID is unused.
Signed-off-by: Timo Alho <talho@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
The video PLLs are used directly by the HDMI controller. Export them so
that we can use them in our DT node.
Signed-off-by: Jonathan Liu <net147@gmail.com>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Unfortunately, the A83t display clocks are not children of the de clock,
since that clocks doesn't exist at all on the A83t.
For now, they are orphans, so let's move them to their true, existing,
parent.
Fixes: 763c5bd045 ("clk: sunxi-ng: add support for DE2 CCU")
Reviewed-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Some registers for the Exynos 4412 ISP (Camera subsystem) clocks are
located in the ISP power domain. Because those registers are also
located in a different memory region than the main clock controller,
support for them can be provided by a separate clock controller.
This in turn allows to almost seamlessly make it aware of the power
domain using recently introduced runtime PM support for clocks.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Some registers for the Exynos 4412 ISP (Camera subsystem) clocks are
located in the ISP power domain. Instantiate those clocks only when
provided clock registers resource covers those registers. This is
a preparation for adding a separate clock driver for ISP clocks,
which will be integrated with power domain using runtime PM feature.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
According to the R-Car Gen3 Hardware Manual Errata for Rev 0.55 of
September 8, 2017, the parent clock of the INTC-AP module clock on R-Car
D3 is S1D2.
This change has no functional impact.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
According to the R-Car Gen3 Hardware Manual Errata for Rev 0.55 of
September 8, 2017, the parent clock of the INTC-AP module clock on R-Car
M3-W is S0D3.
This change has no functional impact.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
According to the R-Car Gen3 Hardware Manual Errata for Rev 0.55 of
September 8, 2017, the parent clock of the INTC-AP module clock on R-Car
H3 ES2.0 is S0D3.
This change has no functional impact.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
This exports the clock for the pclk gate of the eFuse that is part of
the RK3368 SoCs. So we can use it from the dt-bindings.
Signed-off-by: Romain Perier <romain.perier@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
The audio blocks require specific clock rates. Until now we were using
the closest clock rate possible with integer N-M factors. This resulted
in audio playback being slightly slower than it should be.
The vendor kernel gets around this (for newer SoCs) by using sigma-delta
modulation to generate a fractional-N factor. As the PLL hardware is
identical in most chips, we can back port the settings from the newer
SoC, in this case the H3, onto the A23.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The audio blocks require specific clock rates. Until now we were using
the closest clock rate possible with integer N-M factors. This resulted
in audio playback being slightly slower than it should be.
The vendor kernel gets around this (for newer SoCs) by using sigma-delta
modulation to generate a fractional-N factor. As the PLL hardware is
identical in most chips, we can back port the settings from the newer
SoC, in this case the H3, onto the A31.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The audio blocks require specific clock rates. Until now we were using
the closest clock rate possible with integer N-M factors. This resulted
in audio playback being slightly slower than it should be.
The vendor kernel gets around this (for newer SoCs) by using sigma-delta
modulation to generate a fractional-N factor. As the PLL hardware is
identical in most chips, we can back port the settings from the newer
SoC, in this case the H3, onto the sun5i family.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The audio blocks require specific clock rates. Until now we were using
the closest clock rate possible with integer N-M factors. This resulted
in audio playback being slightly slower than it should be.
The vendor kernel gets around this (for newer SoCs) by using sigma-delta
modulation to generate a fractional-N factor. As the PLL hardware is
identical in most chips, we can back port the settings from the newer
SoC, in this case the H3, onto the A10 and A20.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The audio blocks require specific clock rates. Until now we were using
the closest clock rate possible with integer N-M factors. This resulted
in audio playback being slightly slower than it should be.
The vendor kernel gets around this (for newer SoCs) by using sigma-delta
modulation to generate a fractional-N factor. This patch copies the
parameters for the H3.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Some of the N-M-style clocks, namely the PLLs, support sigma-delta
modulation to do fractional-N frequency synthesis. This is used in
the audio PLL to generate the exact frequency the audio blocks need.
These frequencies can not be generated with integer N-M factors.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Sigma-delta modulation is supported for some PLLs. This allows
fractional-N multipliers to be used. In reality we don't know
how to configure the individual settings for it. However we can
copy existing settings from the vendor kernel to support clock
rates that cannot be generated from integer factors, but are
really desired. The vendor kernel only uses this for the audio
PLL clock, and only on the latest chips.
This patch adds a new class of clocks, along with helper functions.
It is intended to be merged into N-M-factor style clocks as a
feature, much like fractional clocks.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The round_rate callback for N-M-factor style clocks does not check if
the requested clock rate is supported by the fractional clock mode.
While this doesn't affect usage in practice, since the clock rates
are also supported through N-M factors, it does not match the set_rate
code.
Add a check to the round_rate callback so it matches the set_rate
callback.
Fixes: 6174a1e24b ("clk: sunxi-ng: Add N-M-factor clock support")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The post-divider for the audio PLL is in bits [29:26], as specified
in the user manual, not [19:16] as currently programmed in the code.
The post-divider has a default register value of 2, i.e. a divider
of 3. This means the clock rate fed to the audio codec would be off.
This was discovered when porting sigma-delta modulation for the PLL
to sun5i, which needs the post-divider to be 1.
Fix the bit offset, so we do actually force the post-divider to a
certain value.
Fixes: 5e73761786 ("clk: sunxi-ng: Add sun5i CCU driver")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Add support for the Broadcom Hurricane 2 SoC clock controller. We can
re-use the existing iProc clock library since the SoC's architecture is
largely the same as its predecessors. For now, we just initialize the
iProc ARM PLL.
Acked-by: Jon Mason <jon.mason@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
The suspend/resume functions are referenced conditionally, causing
a harmless warning when CONFIG_PM is disabled:
drivers/clk/samsung/clk-exynos5433.c:5476:12: error: 'exynos5433_cmu_resume' defined but not used [-Werror=unused-function]
drivers/clk/samsung/clk-exynos5433.c:5453:12: error: 'exynos5433_cmu_suspend' defined but not used [-Werror=unused-function]
This marks both as __maybe_unused to shut up the warning.
Fixes: 523d3de41f ("clk: samsung: exynos5433: Add support for runtime PM")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Remove support for obsolete clkdev alias definition in generic helper
macros for MUX, DIV, GATE and PLL clocks. clkdev aliases can be still
created using samsung_clk_register_alias() function if given platform
still needs them. All current drivers have been converted not to use
*_A-style macros and checked if there are any clients for the PLL
clocks, which had aliases created unconditionally.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
S3C2443 platform still use non-dt based lookup in some of its drivers
to get MPLL and EPLL clocks. Till now it worked only because PLL()
macro implicitly created aliases for all instantiated clocks. This
feature will be removed, so explicitly create aliases for MPLL and
EPLL clocks.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
S3C2443 SoC still uses old, non-dt CPUfreq driver, which requires clkdev
aliases to get access to proper clocks. Create those aliases using
samsung_clk_register_alias() function instead of using *_A clock macros,
which will be removed soon.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Exynos5440 still uses old, non-dt CPUfreq driver, which requires clkdev
aliases to get access to proper clocks. Create those aliases using
samsung_clk_register_alias() function instead of using *_A clock macros,
which will be removed soon.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Drop clkdev alias for "mout_aclk400_mscl" clock. It was not used at all
and it was probably committed by accident.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
All Exynos5250 boards have been fully converted to device-tree and use
generic dt-based CPUfreq driver, so there is no need to create any clkdev
aliases for the clocks. Drop all the code related to aliases handling.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
CLK_ARM_CLK ("armclk") clock is provided by cpu-clk subdriver, which is
instantiated after creating all divider clocks from exynos4_div_clks
array. There is no point assigning this id to "div_core2" clock and later
overwrite with proper "armcpu" clock by cpu-clk subdriver.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
All Exynos4 boards have been fully converted to device-tree and use generic
dt-based CPUfreq driver, so there is no need to create any clkdev aliases
for the clocks. Drop all the code related to aliases handling.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Support for Exynos 4212 SoC has been removed by commit bca9085e0a ("ARM:
dts: exynos: remove Exynos4212 support (dead code)"), so there is no need
to keep dead code.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Chanwoo Choi <cw00.choi@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Support for Exynos4212 SoCs has been removed by commit bca9085e0a ("ARM:
dts: exynos: remove Exynos4212 support (dead code)"), so there is no need
to keep remaining dead code related to this SoC version.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Datasheet specified that parent MUX settings are at bits [10:8],
but current implementation specifies incorrect offset at [10:12].
Fix this.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Commit 6edfa11cb3 ("clk: samsung: Add enable/disable operation for
PLL36XX clocks") added enable/disable operations to PLL clocks. Prior that
VPLL and EPPL clocks were always enabled because the enable bit was never
touched. Those clocks have to be enabled during suspend/resume cycle,
because otherwise board fails to enter sleep mode. This patch enables them
unconditionally before entering system suspend state. System restore
function will set them to the previous state saved in the register cache
done before that unconditional enable.
Fixes: 6edfa11cb3 ("clk: samsung: Add enable/disable operation for PLL36XX clocks")
CC: stable@vger.kernel.org # v4.13
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
All users of __PLL macro already provide flags parameter, so don't
overwrite it unconditionally with CLK_GET_RATE_NOCACHE.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
* clk-pm-runtime:
clk: samsung: exynos-audss: Add support for runtime PM
clk: samsung: exynos-audss: Use local variable for controller's device
clk: samsung: exynos5433: Add support for runtime PM
clk: samsung: Add support for runtime PM
clk: Add support for runtime PM
some register errors and some clocks that should be critical
for safe usage.
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Merge tag 'v4.14-rockchip-clkfixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-fixes
Pull Rockchip clk driver fixes from Heiko Stuebner:
Some smallish fixes for the rk3128 clock support including
some register errors and some clocks that should be critical
for safe usage.
* tag 'v4.14-rockchip-clkfixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: add sclk_timer5 as critical clock on rk3128
clk: rockchip: fix up rk3128 pvtm and mipi_24m gate regs error
clk: rockchip: add pclk_pmu as critical clock on rk3128
The HDMI DDC clock found in the CCU is the parent of the actual DDC
clock within the HDMI controller. That clock is also named "hdmi-ddc".
Rename the one in the CCU to "ddc". This makes more sense than renaming
the one in the HDMI controller to something else.
Fixes: c6e6c96d8f ("clk: sunxi-ng: Add A31/A31s clocks")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The 2x outputs of the 2 video PLL clocks are directly used by the
HDMI controller block.
Export them so they can be referenced in the device tree.
Fixes: c6e6c96d8f ("clk: sunxi-ng: Add A31/A31s clocks")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The TOP "aclk400_mscl" clock should be kept enabled all the time
to allow proper access to power management control for MSC power
domain and devices that are a part of it. This change is required
for the scaler to work properly after domain power on/off sequence.
Fixes: 318fa46cc6 ("clk/samsung: exynos542x: mark some clocks as critical")
Signed-off-by: Andrzej Pietrasiewicz <andrzej.p@samsung.com>
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
The script "checkpatch.pl" pointed information out like the following.
WARNING: Possible unnecessary 'out of memory' message
Thus fix affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
The script "checkpatch.pl" pointed information out like the following.
WARNING: Possible unnecessary 'out of memory' message
Thus fix affected source code places.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Omit an extra message for a memory allocation failure in this function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Omit an extra message for a memory allocation failure
in exynos_register_cpu_clock() function.
This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Until now we were not providing a way to read back the status of our
reset controls. Consumers had no real way to be certain whether a
peripheral was held in reset or not.
Implement the status callback to complete the API support.
Fixes: 1d80c14248 ("clk: sunxi-ng: Add common infrastructure")
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This commit removes the fixed clocks introduced as a stub clock driver
added with commit 75fabc3f64 ("ARM: bcm2835: add stub clock driver").
Originally they were used to drive the AMBA bus and PL011 uart driver.
Now these clocks are derived by the CPRMAN clock driver and configured
in DT.
Additionally, get rid of init_machine function in bcm2835 board file
as there's nothing to do any longer.
Signed-off-by: Danilo Krummrich <danilokrummrich@dk-develop.de>
Acked-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Add R-Car V3M (R8A77970) Clock Pulse Generator / Module Standby and
Software Reset support, using the CPG/MSSR driver core and the common
R-Car Gen3 code.
Based on the original (and large) patch by Daisuke Matsushita
<daisuke.matsushita.ns@hitachi.com>.
Signed-off-by: Vladimir Barinov <vladimir.barinov@cogentembedded.com>
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
When using cpufreq-dt with default govenor other than "performance"
system freezes while booting.
Adding CLK_SET_RATE_PARENT | CLK_IS_CRITICAL to clk_cpu fixes the
problem.
Tested on Cubietruck (A20).
Fixes: c84f5683f6E ("clk: sunxi-ng: Add sun4i/sun7i CCU driver")
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Alexander Syring <alex@asyring.de>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The GPU clock on H3 has only one parent, PLL-GPU, and the PLL is only
the parent of the GPU clock. The GPU clock can be tweaked by tweaking
the PLL-GPU clock.
Add CLK_SET_RATE_PARENT flag to allow tweaking the GPU clock via
tweaking PLL-CPU.
Fixes: 0577e4853b ("clk: sunxi-ng: Add H3 clocks")
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The PLLs on H3 have a lock bit, which will only be set to 1 when the PLL
is really working.
Add CLK_SET_RATE_UNGATE to the PLLs, otherwise it will timeout when
trying to set PLL clock frequency without enabling it.
Fixes: 0577e4853b ("clk: sunxi-ng: Add H3 clocks")
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
sclk_timer5 is for arm arch counter, so need always on.
but no dts node to handle this clk, so make it as critical clock
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
A copy-paste error made them use the wrong bits in the register.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
pclk_pmu need always on, and no dts node to handle this clk,
so make it as critical clock
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
the sunxi-ng framework. Otherwise, the heavy hitters are various drivers
for SoCs like AT91, Amlogic, Renesas, and Rockchip. There are some other
new clk drivers in here too but overall this is just a bunch of clk
drivers for various different pieces of hardware and a collection of
non-critical fixes for clk drivers.
New Drivers:
- Allwinner R40 SoCs
- Renesas R-Car Gen3 USB 2.0 clock selector PHY
- Atmel AT91 audio PLL
- Uniphier PXs3 SoCs
- ARC HSDK Board PLLs
- AXS10X Board PLLs
- STMicroelectronics STM32H743 SoCs
Removed Drivers:
- Non-compiling mb86s7x support
Updates:
- Allwinner A10/A20 SoCs converted to sunxi-ng framework
- Allwinner H3 CPU clk fixes
- Renesas R-Car D3 SoC
- Renesas V2H and M3-W modules
- Samsung Exynos5420/5422/5800 audio fixes
- Rockchip fractional clk approximation fixes
- Rockchip rk3126 SoC support within the rk3128 driver
- Amlogic gxbb CEC32 and sd_emmc clks
- Amlogic meson8b reset controller support
- IDT VersaClock 5P49V5925/5P49V6901 support
- Qualcomm MSM8996 SMMU clks
- Various 'const' applications for struct clk_ops
- si5351 PLL reset bugfix
- Uniphier audio on LD11/LD20 and ethernet support on LD11/LD20/Pro4/PXs2
- Assorted Tegra clk driver fixes
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Merge tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux
Pull clk updates from Stephen Boyd:
"The diff is dominated by the Allwinner A10/A20 SoCs getting converted
to the sunxi-ng framework. Otherwise, the heavy hitters are various
drivers for SoCs like AT91, Amlogic, Renesas, and Rockchip. There are
some other new clk drivers in here too but overall this is just a
bunch of clk drivers for various different pieces of hardware and a
collection of non-critical fixes for clk drivers.
New Drivers:
- Allwinner R40 SoCs
- Renesas R-Car Gen3 USB 2.0 clock selector PHY
- Atmel AT91 audio PLL
- Uniphier PXs3 SoCs
- ARC HSDK Board PLLs
- AXS10X Board PLLs
- STMicroelectronics STM32H743 SoCs
Removed Drivers:
- Non-compiling mb86s7x support
Updates:
- Allwinner A10/A20 SoCs converted to sunxi-ng framework
- Allwinner H3 CPU clk fixes
- Renesas R-Car D3 SoC
- Renesas V2H and M3-W modules
- Samsung Exynos5420/5422/5800 audio fixes
- Rockchip fractional clk approximation fixes
- Rockchip rk3126 SoC support within the rk3128 driver
- Amlogic gxbb CEC32 and sd_emmc clks
- Amlogic meson8b reset controller support
- IDT VersaClock 5P49V5925/5P49V6901 support
- Qualcomm MSM8996 SMMU clks
- Various 'const' applications for struct clk_ops
- si5351 PLL reset bugfix
- Uniphier audio on LD11/LD20 and ethernet support on LD11/LD20/Pro4/PXs2
- Assorted Tegra clk driver fixes"
* tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: (120 commits)
clk: si5351: fix PLL reset
ASoC: atmel-classd: remove aclk clock
ASoC: atmel-classd: remove aclk clock from DT binding
clk: at91: clk-generated: make gclk determine audio_pll rate
clk: at91: clk-generated: create function to find best_diff
clk: at91: add audio pll clock drivers
dt-bindings: clk: at91: add audio plls to the compatible list
clk: at91: clk-generated: remove useless divisor loop
clk: mb86s7x: Drop non-building driver
clk: ti: check for null return in strrchr to avoid null dereferencing
clk: Don't write error code into divider register
clk: uniphier: add video input subsystem clock
clk: uniphier: add audio system clock
clk: stm32h7: Add stm32h743 clock driver
clk: gate: expose clk_gate_ops::is_enabled
clk: nxp: clk-lpc32xx: rename clk_gate_is_enabled()
clk: uniphier: add PXs3 clock data
clk: hi6220: change watchdog clock source
clk: Kconfig: Name RK805 in Kconfig for COMMON_CLK_RK808
clk: cs2000: Add cs2000_set_saved_rate
...
As usual, device tree updates is the bulk of our material in this merge
window. This time around, 559 patches affecting both 32- and 64-bit
platforms.
Changes are too many to list individually, but some of the larger ones:
New platform/SoC support:
- Automotive:
+ Renesas R-Car D3 (R8A77995)
+ TI DT76x
+ MediaTek mt2712e
- Communication-oriented:
+ Qualcomm IPQ8074
+ Broadcom Stingray
+ Marvell Armada 8080
- Set top box:
+ Uniphier PXs3
Besides some vendor reference boards for the SoC above, there are also several
new boards/machines:
- TI AM335x Moxa UC-8100-ME-T open platform
- TI AM57xx Beaglebone X15 Rev C
- Microchip/Atmel sama5d27 SoM1 EK
- Broadcom Raspberry Pi Zero W
- Gemini-based D-Link DIR-685 router
- Freescale i.MX6:
+ Toradex Apalis module + Apalis and Ixora carrier boards
+ Engicam GEAM6UL Starter Kit
- Freescale i.MX53-based Beckhoff CX9020 Embedded PC
- Mediatek mt7623-based BananaPi R2
- Several Allwinner-based single-board computers:
+ Cubietruck plus
+ Bananapi M3, M2M and M64
+ NanoPi A64
+ A64-OLinuXino
+ Pine64
- Rockchip RK3328 Pine64/Rock64 board support
- Rockchip RK3399 boards:
+ RK3399 Sapphire module on Excavator carrier (RK3399 reference design)
+ Theobroma Systems RK3399-Q7 SoM
- ZTE ZX296718 PCBOX Board
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Merge tag 'armsoc-devicetree' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM/arm64 Devicetree updates from Olof Johansson:
"As usual, device tree updates is the bulk of our material in this
merge window. This time around, 559 patches affecting both 32- and
64-bit platforms.
Changes are too many to list individually, but some of the larger
ones:
New platform/SoC support:
- Automotive:
+ Renesas R-Car D3 (R8A77995)
+ TI DT76x
+ MediaTek mt2712e
- Communication-oriented:
+ Qualcomm IPQ8074
+ Broadcom Stingray
+ Marvell Armada 8080
- Set top box:
+ Uniphier PXs3
Besides some vendor reference boards for the SoC above, there are also
several new boards/machines:
- TI AM335x Moxa UC-8100-ME-T open platform
- TI AM57xx Beaglebone X15 Rev C
- Microchip/Atmel sama5d27 SoM1 EK
- Broadcom Raspberry Pi Zero W
- Gemini-based D-Link DIR-685 router
- Freescale i.MX6:
+ Toradex Apalis module + Apalis and Ixora carrier boards
+ Engicam GEAM6UL Starter Kit
- Freescale i.MX53-based Beckhoff CX9020 Embedded PC
- Mediatek mt7623-based BananaPi R2
- Several Allwinner-based single-board computers:
+ Cubietruck plus
+ Bananapi M3, M2M and M64
+ NanoPi A64
+ A64-OLinuXino
+ Pine64
- Rockchip RK3328 Pine64/Rock64 board support
- Rockchip RK3399 boards:
+ RK3399 Sapphire module on Excavator carrier (RK3399 reference design)
+ Theobroma Systems RK3399-Q7 SoM
- ZTE ZX296718 PCBOX Board"
* tag 'armsoc-devicetree' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (559 commits)
ARM: dts: at91: at91sam9g45: add AC97
arm64: dts: marvell: mcbin: enable more networking ports
arm64: dts: marvell: add a reference to the sysctrl syscon in the ppv2 node
arm64: dts: marvell: add TX interrupts for PPv2.2
arm64: dts: uniphier: add PXs3 SoC support
ARM: dts: uniphier: add pinctrl groups of ethernet phy mode
ARM: dts: uniphier: fix size of sdctrl nodes
ARM: dts: uniphier: add AIDET nodes
arm64: dts: uniphier: fix size of sdctrl node
arm64: dts: uniphier: add AIDET nodes
Revert "ARM: dts: sun8i: h3: Enable dwmac-sun8i on the Beelink X2"
arm64: dts: uniphier: add reset controller node of analog amplifier
arm64: dts: marvell: add Device Tree files for Armada-8KP
arm64: dts: rockchip: add Haikou baseboard with RK3399-Q7 SoM
arm64: dts: rockchip: add RK3399-Q7 (Puma) SoM
dt-bindings: add rk3399-q7 SoM
ARM: dts: rockchip: enable usb for rv1108-evb
ARM: dts: rockchip: add usb nodes for rv1108 SoCs
dt-bindings: update grf-binding for rv1108 SoCs
ARM: dts: aspeed-g4: fix AHB window size of the SMC controllers
...
This patch adds support for runtime PM to Exynos Audio SubSystem driver to
enable full support for audio power domain on Exynos5 SoCs. The main change
is moving register saving and restoring code from system sleep PM ops to
runtime PM ops and implementing system sleep PM ops with generic
pm_runtime_force_suspend/resume helpers. Runtime PM of the Exynos AudSS
device is managed from clock core depending on the preparation status
of the provided clocks.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1503302703-13801-6-git-send-email-m.szyprowski@samsung.com
Store pointer to the controller's device in local variable to avoid
extracting it from platform device in each call. This will also simplify
code in the future, when runtime PM support is added.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1503302703-13801-5-git-send-email-m.szyprowski@samsung.com
Add runtime pm support for all clock controller units (CMU), which belong
to power domains and require special handling during on/off operations.
Typically special values has to be written to MUX registers to change
internal clocks parents to OSC clock before turning power off. During such
operation all clocks, which enter CMU has to be enabled to let MUX to
stabilize. Also for each CMU there is one special parent clock, which has
to be enabled all the time when any access to CMU registers is being done.
This patch solves most of the mysterious external abort and freeze issues
caused by a lack of proper parent CMU clock enabled or incorrect turn off
procedure.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1503302703-13801-4-git-send-email-m.szyprowski@samsung.com
This patch adds struct device pointer to samsung_clk_provider and forwarding it
to clk_register_* functions, so drivers can register clocks, which use runtime
pm feature.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Reviewed-by: Chanwoo Choi <cw00.choi@samsung.com>
Tested-by: Chanwoo Choi <cw00.choi@samsung.com>
Reviewed-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1503302703-13801-3-git-send-email-m.szyprowski@samsung.com
Registers for some clocks might be located in the SOC area, which are under the
power domain. To enable access to those registers respective domain has to be
turned on. Additionally, registers for such clocks will usually loose its
contents when power domain is turned off, so additional saving and restoring of
them might be needed in the clock controller driver.
This patch adds basic infrastructure in the clocks core to allow implementing
driver for such clocks under power domains. Clock provider can supply a
struct device pointer, which is the used by clock core for tracking and managing
clock's controller runtime pm state. Each clk_prepare() operation
will first call pm_runtime_get_sync() on the supplied device, while
clk_unprepare() will do pm_runtime_put_sync() at the end.
Additional calls to pm_runtime_get/put functions are required to ensure that any
register access (like calculating/changing clock rates and unpreparing/disabling
unused clocks on boot) will be done with clock controller in runtime resumend
state.
When one wants to register clock controller, which make use of this feature, he
has to:
1. Provide a struct device to the core when registering the provider.
2. Ensure to enable runtime PM for that device before registering clocks.
3. Make sure that the runtime PM status of the controller device reflects
the HW state.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Michael Turquette <mturquette@baylibre.com>
Link: lkml.kernel.org/r/1503302703-13801-2-git-send-email-m.szyprowski@samsung.com
Changing the audio sample rate on the SolidRun Cubox disrupts the video
output. The Si5351 provides both the video clock (using PLLA on output
0) and the audio clock (using PLLB on output 2).
When the rate of clock output 2 is changed, it reconfigures PLLB, which
results in both PLLA and PLLB being reset. The reset of PLLA causes
clock output 0 to be disrupted, thereby causing a loss of sync by the
attached display device.
Hence, each time the audio sample rate changes (eg, when a video player
starts up, or when starting to play music) the video display momentarily
blanks while the Si5351 settles down. Prior to the commit below, this
behaviour did not happen.
Fix this by only resetting only the PLL which has been changed.
Fixes: 6dc669a22c ("clk: si5351: Add PLL soft reset")
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Acked-by: Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This allows gclk to determine audio_pll rate and set the parent rate
accordingly.
However, there are multiple children clocks that could technically
change the rate of audio_pll (via gck). With the rate locking, the first
consumer to enable the clock will be the one definitely setting the rate
of the clock.
Since audio IPs are most likely to request the same rate, we enforce
that the only clks able to modify gck rate are those of audio IPs.
To remain consistent, we deny other clocks to be children of audio_pll.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The way to find the best_diff and do the appropriate process afterwards
can be re-used.
This patch prepares the driver for an upcoming patch that will allow
clk_generated to determine the rate of the audio_pll.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This new clock driver set allows to have a fractional divided clock that
would generate a precise clock particularly suitable for audio
applications.
The main audio pll clock has two children clocks: one that is connected
to the PMC, the other that can directly drive a pad. As these two routes
have different enable bits and different dividers and divider formulas,
they are handled by two different drivers. Each of them could modify the
rate of the main audio pll parent.
The main audio pll clock can output 620MHz to 700MHz.
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The driver requests the current clk rate of each of its parent clocks to
decide whether a clock rate is suitable or not. It does not request
determine_rate from a parent clock which could request a rate change in
parent clock (i.e. there is no parent rate propagation).
We know the rate we want (passed along req argument of the function) and
the parent clock rate, thus we know the closest rounded divisor, we
don't need to iterate over the available divisors to find the best one
for a given clock.
Signed-off-by: Quentin Schulz <quentin.schulz@free-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
It fails to build once we introduce the ARCH_MB86S7X Kconfig symbol:
drivers/clk/clk-mb86s7x.c:27:10: fatal error: soc/mb86s7x/scb_mhu.h: No such file or directory
#include <soc/mb86s7x/scb_mhu.h>
^~~~~~~~~~~~~~~~~~~~~~~
compilation terminated.
And when commenting out that line, we get:
drivers/clk/clk-mb86s7x.c: In function 'crg_gate_control':
drivers/clk/clk-mb86s7x.c:72:8: error: implicit declaration of function 'mb86s7x_send_packet' [-Werror=implicit-function-declaration]
ret = mb86s7x_send_packet(CMD_PERI_CLOCK_GATE_SET_REQ,
^~~~~~~~~~~~~~~~~~~
drivers/clk/clk-mb86s7x.c:72:28: error: 'CMD_PERI_CLOCK_GATE_SET_REQ' undeclared (first use in this function)
ret = mb86s7x_send_packet(CMD_PERI_CLOCK_GATE_SET_REQ,
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/clk/clk-mb86s7x.c:72:28: note: each undeclared identifier is reported only once for each function it appears in
drivers/clk/clk-mb86s7x.c: In function 'crg_rate_control':
drivers/clk/clk-mb86s7x.c:116:10: error: 'CMD_PERI_CLOCK_RATE_SET_REQ' undeclared (first use in this function)
code = CMD_PERI_CLOCK_RATE_SET_REQ;
^~~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/clk/clk-mb86s7x.c:121:10: error: 'CMD_PERI_CLOCK_RATE_GET_REQ' undeclared (first use in this function); did you mean 'CMD_PERI_CLOCK_RATE_SET_REQ'?
code = CMD_PERI_CLOCK_RATE_GET_REQ;
^~~~~~~~~~~~~~~~~~~~~~~~~~~
CMD_PERI_CLOCK_RATE_SET_REQ
drivers/clk/clk-mb86s7x.c: In function 'mhu_cluster_rate':
drivers/clk/clk-mb86s7x.c:276:10: error: 'CMD_CPU_CLOCK_RATE_GET_REQ' undeclared (first use in this function)
code = CMD_CPU_CLOCK_RATE_GET_REQ;
^~~~~~~~~~~~~~~~~~~~~~~~~~
drivers/clk/clk-mb86s7x.c:278:10: error: 'CMD_CPU_CLOCK_RATE_SET_REQ' undeclared (first use in this function); did you mean 'CMD_CPU_CLOCK_RATE_GET_REQ'?
code = CMD_CPU_CLOCK_RATE_SET_REQ;
^~~~~~~~~~~~~~~~~~~~~~~~~~
CMD_CPU_CLOCK_RATE_GET_REQ
cc1: some warnings being treated as errors
scripts/Makefile.build:302: recipe for target
'drivers/clk/clk-mb86s7x.o' failed
make[2]: *** [drivers/clk/clk-mb86s7x.o] Error 1
Remove the driver for now.
Signed-off-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
strrchr can potentially return a null so the following strlen on the
null pointer can cause a null dereference. Add a check to see if
the string postfix is not null before calling strlen.
Detected by CoverityScan, CID#1452039 ("Dereference null return")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add a check for error returned by divider value calculation to avoid
writing error code into hw register.
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Jon Mayo <jmayo@nvidia.com>
Fixes: bca9690b94 ("clk: divider: Make generic for usage elsewhere")
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add a clock for video input subsystem (EXIV) on
UniPhier LD11/LD20 SoCs.
Signed-off-by: Katsuhiro Suzuki <suzuki.katsuhiro@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch enables clocks for STM32H743 boards.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
for MFD changes:
Acked-by: Lee Jones <lee.jones@linaro.org>
for DT-Bindings
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch exposes clk_gate_ops::is_enabled as functions
that can be directly called and assigned in places like this so
we don't need wrapper functions that do nothing besides forward
the call.
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Suggested-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
We need to export clk_gate_is_enabled() from clk framework, then
to avoid compilation issue we have to rename clk_gate_is_enabled()
in NXP LPC32xx clock driver.
We changed all gate op with 'lpc32xx_' prefix:
lpc32xx_clk_gate_enable(),
lpc32xx_clk_gate_disable(),
lpc32xx_clk_gate_is_enabled().
Signed-off-by: Gabriel Fernandez <gabriel.fernandez@st.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add basic clock data for Socionext's new SoC PXs3.
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The old code uses tcxo (19.2MHz) as watchdog clock but actually the
watchdog uses 32K clock, as result the watchdog timeout cannot be set
correctly and delay long time to reset SoC.
So this patch is to use 'ref32k' as clock source for watchdog.
Fixes: 72ea48610d ("clk: hi6220: Clock driver support for Hisilicon hi6220 SoC")
Signed-off-by: Leo Yan <leo.yan@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The RK808 and RK805 PMICs are using a similar register map.
We can reuse the clk driver for the RK805 PMIC. So let's add
the RK805 in the Kconfig description.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Joseph Chen <chenjh@rock-chips.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This patch adds the common function to reset the clk rate in order to
be able to use it in other cases.
Signed-off-by: Gaku Inami <gaku.inami.xw@bp.renesas.com>
Signed-off-by: Hiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: Yoshihiro Kaneko <ykaneko0929@gmail.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This propagates rate requests from the display interface to the divider
or PLL output, allowing to hit the required display rate in many more
cases.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Tested-By: Wladimir J. van der Laan <laanwj@gmail.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Conversion of the last two SoCs (A10, A20) to the sunxi-ng framework.
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Merge tag 'sunxi-clk-for-4.14-3' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-next
Pull more Allwinner clock changes from Maxime Ripard:
* Conversion of the last two SoCs (A10, A20) to the sunxi-ng framework
* tag 'sunxi-clk-for-4.14-3' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
clk: sunxi-ng: Add sun4i/sun7i CCU driver
dt-bindings: List devicetree binding for the CCU of Allwinner A10
dt-bindings: List devicetree binding for the CCU of Allwinner A20
gcc-8 reports an uninitialized variable access in a code path
that we would see with incorrect DTB input:
drivers/clk/sunxi/clk-sun8i-bus-gates.c: In function 'sun8i_h3_bus_gates_init':
drivers/clk/sunxi/clk-sun8i-bus-gates.c:85:27: error: 'clk_parent' may be used uninitialized in this function [-Werror=maybe-uninitialized]
This works around by skipping invalid input and printing a warning
instead if it ever happens. The problem was apparently part of the
initiali driver submission, but older compilers don't notice it.
Fixes: ab6e23a4e3 ("clk: sunxi: Add H3 clocks support")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Make this const as it is only stored in the const field of a
clk_init_data structure.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Liviu Dudau <Liviu.Dudau@arm.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
HSDK board manages its clocks using various PLLs. These PLL have same
dividers and corresponding control registers mapped to different addresses.
So we add one common driver for such PLLs.
Each PLL on HSDK board consists of three dividers: IDIV, FBDIV and
ODIV. Output clock value is managed using these dividers.
We add pre-defined tables with supported rate values and appropriate
configurations of IDIV, FBDIV and ODIV for each value.
As of today we add support for PLLs that generate clock for the
HSDK arc cpus, system, ddr, AXI tunnel and hdmi.
By this patch we add support for several plls (arc cpus pll and others),
so we had to use two different init types: CLK_OF_DECLARE for arc cpus pll
and regular probing for others plls.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
clk_div_table are not supposed to change at runtime. All functions
working with clk_div_table provided by <linux/clk-provider.h> work
with const clk_div_table. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
clk_div_table are not supposed to change at runtime. All functions
working with clk_div_table provided by <linux/clk-provider.h> work
with const clk_div_table. So mark the non-const structs as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Add clock control for ethernet controller on Pro4, PXs2, LD11 and LD20.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Acked-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
This bit is pin control, and needs to be carefully managed by the
new pin control driver.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
clk_ops are not supposed to change at runtime. All functions
working with clk_ops provided by <linux/clk-provider.h> work
with const clk_ops. So mark the non-const clk_ops as const.
Here, Function "clk_reg_prcc" is used to initialized clk_init_data.
clk_init_data is working with const clk_ops. So make clk_reg_prcc
non-const clk_ops argument as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
clk_ops are not supposed to change at runtime. All functions
working with clk_ops provided by <linux/clk-provider.h> work
with const clk_ops. So mark the non-const clk_ops as const.
Here, Function "clk_reg_sysctrl" is used to initialized clk_init_data.
clk_init_data is working with const clk_ops. So make clk_reg_sysctrl
non-const clk_ops argument as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
clk_ops are not supposed to change at runtime. All functions
working with clk_ops provided by <linux/clk-provider.h> work
with const clk_ops. So mark the non-const clk_ops as const.
Here, Function "clk_reg_prcmu" is used to initialized clk_init_data.
clk_init_data is working with const clk_ops. So make clk_reg_prcmu
non-const clk_ops argument as const.
Signed-off-by: Arvind Yadav <arvind.yadav.cs@gmail.com>
Acked-by: Ulf Hansson <ulf.hansson@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The reset hook was left implemented. Provide a dumb implementation so that
client drivers can depend on it.
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
The MMC2 clock supports a new timing mode. When the new mode is active,
the output clock rate is halved.
This patch sets the feature flag for the new timing mode, and adds
a pre-divider based on the mode bit.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
All of our MMC clocks are of the MP clock type. A few MMC clocks on some
SoCs, such as MMC2 on the A83T, support new/old timing mode switching.
>From a clock rate point of view, when the new timing mode is active. the
output clock rate is halved.
This patch adds a special wrapper class of clocks, MP_MMC, around the
generic MP type clocks. The rate related callbacks in ccu_mp_mmc_ops
for this class look at the timing mode bit and apply the /2 post-divider
when needed, before passing it through to the generic class ops,
ccu_mp_ops.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Starting with the A83T SoC, Allwinner introduced a new timing mode for
its MMC clocks. The new mode changes how the MMC controller sample and
output clocks are delayed to match chip and board specifics. There are
two controls for this, one on the CCU side controlling how the clocks
behave, and one in the MMC controller controlling what inputs to take
and how to route them.
In the old mode, the MMC clock had 2 child clocks providing the output
and sample clocks, which could be delayed by a number of clock cycles
measured from the MMC clock's parent.
With the new mode, the 2 delay clocks are no longer active. Instead,
the delays and associated controls are moved into the MMC controller.
The output of the MMC clock is also halved.
The difference in how things are wired between the modes means that the
clock controls and the MMC controls must match. To achieve this in a
clear, explicit way, we introduce two functions for the MMC driver to
use: one queries the hardware for the current mode set, and the other
allows the MMC driver to request a mode.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Introduce a clock controller driver for sun4i A10 and sun7i A20
series SoCs.
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
This patch adds missing LPASS smmu clks which are required by the audio driver.
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
- Added necessary delays in PLLU enable sequence during initialization
- Applied PLLU lock to all secondary gates (PLLU_48M and PLLU_60M were
missing).
Signed-off-by: Alex Frid <afrid@nvidia.com>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Increased Tegra210 UTMIPLL power on delay to 20us (spec maximum is 15us).
Also remove a few empty lines to make it more clear the ACTIVE_DLY_COUNT
and ENABLE_DLY_COUNT fields.
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Jon Mayo <jmayo@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Switched Tegra210 PLLRE registration to common PLL ops instead of special
PLLRE ops used on previous Tegra chips. The latter ops do not follow
chip specific PLL frequency table, and do not apply chip specific rate
calculation method.
Removed unnecessary default rate setting that duplicates h/w reset
state, and is overwritten by clock initialization, anyway.
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Jon Mayo <jmayo@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Remove from Tegra210 PLLSS registration code sections that
- attempt to set PLL minimum rate (unnecessary, and dangerous if PLL
is already enabled on boot)
- apply pre-Tegra210 defaults settings
- check IDDQ setting (duplicated with Tegra210 PLLSS check defaults)
Replaced setting of reference clock with check that default oscillator
selection is not changed, and failed registration otherwise as validation
was only done with the oscillator as the reference clock.
Reordered registration, so that PLL initialization is called after
VCOmin adjustment.
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Tegra210 PLLX uses the same sequences than then PLLC instances. So there
is no need to have a special registration function and ops struct for it.
Simplify the code by changing all references to the Tegra210 PLLX
registration function to the Tegra210 PLLC registration function and
avoid duplicate functionality.
Based on work by Alex Frid <afrid@nvidia.com>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
If the PLL is on, only warn if the defaults are not yet set. Otherwise be
silent.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Timo Alho <talho@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Increase delay after PLL IDDQ release to 5us per PLL specifications.
based on work by Alex Frid <afrid@nvidia.com>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
I2C controllers are also on the APB bus and therefor need this flag to handle
resets correctly.
Signed-off-by: Alex Frid <afrid@nvidia.com>
Reviewed-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Don't take the fractional part into account to calculate the effective
NDIV if fractional ndiv is not enabled.
Signed-off-by: Alex Frid <afrid@nvidia.com>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Not all fields are read from the hw depending on the PLL type. Make sure
the other fields are 0 by clearing the structure beforehand to prevent
users such as the rate re-calculation code from using bogus values.
Based on work by Alex Frid <afrid@nvidia.com>
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
PLLD2 is used for HDMI which does not allow Spread Spectrum clocking.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Make sure the pll_ss ops are compiled even when only building for Tegra210.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Shreshtha Sahu <ssahu@nvidia.com>
Tested-by: Shreshtha Sahu <ssahu@nvidia.com>
Reviewed-by: Jon Mayo <jmayo@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
PLL SS was only controlled when setting the PLL rate, not when the PLL itself
is enabled or disabled.
Signed-off-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Reviewed-by: Jon Mayo <jmayo@nvidia.com>
Tested-by: Thierry Reding <treding@nvidia.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
The clock bimc_gpu_clk_src is incorrectly set to use the shared rcg2
ops, which are for RCGs with child branches controlled by different
CPUs.
The result of the incorrect ops is that the GPU's PM runtime may leave
this clock set at a very low rate. Fix this issue by using the correct
rcg2 ops.
Fixes: a2e8272f3f ("clk: qcom: Add MSM8916 gpu clocks")
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Make these const as they are only stored in the const field of a
clk_init_data structure.
Signed-off-by: Bhumika Goyal <bhumirks@gmail.com>
Acked-by: Tero Kristo <t-kristo@ti.com>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
- Add more module clocks for R-Car V2H and M3-W,
- Add support for the R-Car Gen3 USB 2.0 clock selector PHY,
- Add support for the new R-Car D3 SoC,
- Allow compile-testing of all (sub)drivers now all dummy infrastructure
is available,
- Small fixes and cleanups.
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Merge tag 'clk-renesas-for-v4.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next
Pull Renesas clk driver updates from Geert Uytterhoeven:
* Add more module clocks for R-Car V2H and M3-W,
* Add support for the R-Car Gen3 USB 2.0 clock selector PHY,
* Add support for the new R-Car D3 SoC,
* Allow compile-testing of all (sub)drivers now all dummy infrastructure
is available,
* Small fixes and cleanups.
* tag 'clk-renesas-for-v4.14-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
clk: renesas: r8a7796: Add USB3.0 clock
clk: renesas: rcar-usb2-clock-sel: Add R-Car USB 2.0 clock selector PHY
clk: renesas: cpg-mssr: Add R8A77995 support
clk: renesas: rcar-gen3: Add support for SCCG/Clean peripheral clocks
clk: renesas: rcar-gen3: Add divider support for PLL1 and PLL3
clk: renesas: Add r8a77995 CPG Core Clock Definitions
clk: renesas: rcar-gen3-cpg: Refactor checks for accessing the div table
clk: renesas: rcar-gen3-cpg: Drop superfluous variable
clk: renesas: Allow compile-testing of all (sub)drivers
clk: renesas: r8a7792: Add IMR-LX3/LSX3 clocks
clk: renesas: div6: Document fields used for parent selection
Silence the sparse warning
clk/rockchip/clk.c:172:6: warning: symbol 'rockchip_fractional_approximation' was not declared. Should it be static?
Cc: Elaine Zhang <zhangqing@rock-chips.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Rockchip socs experience with the default approximation. For that we
introduce the ability to override it with a clock-specific approximation
and use that to create the needed rate settings as described in the
Rockchip soc manuals (same for all Rockchip socs).
Apart from that we have support for the rk3126 clock controller
which is similar to the rk3128 with some minimal differences
and a lot of improvements and fixes for the rv1108 clock controller
(missing clocks, some clock-ids, naming fixes, register fixes).
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Merge tag 'v4.14-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
Pull Rockchip clk driver updates from Heiko Stuebner:
The biggest change is fixing the jitter on the fractional clock-type
Rockchip socs experience with the default approximation. For that we
introduce the ability to override it with a clock-specific approximation
and use that to create the needed rate settings as described in the
Rockchip soc manuals (same for all Rockchip socs).
Apart from that we have support for the rk3126 clock controller
which is similar to the rk3128 with some minimal differences
and a lot of improvements and fixes for the rv1108 clock controller
(missing clocks, some clock-ids, naming fixes, register fixes).
* tag 'v4.14-rockchip-clk1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: fix the rv1108 clk_mac sel register description
clk: rockchip: rename rv1108 macphy clock to mac
clk: rockchip: add rv1108 ACLK_GMAC and PCLK_GMAC clocks
clk: rockchip: add rk3228 SCLK_SDIO_SRC clk id
clk: rockchip: add rv1108 ACLK_GAMC and PCLK_GMAC ID
clk: rockchip: add rk3228 sclk_sdio_src ID
clk: rockchip: add special approximation to fix up fractional clk's jitter
clk: fractional-divider: allow overriding of approximation
clk: rockchip: modify rk3128 clk driver to also support rk3126
dt-bindings: add documentation for rk3126 clock
clk: rockchip: add some critical clocks for rv1108 SoC
clk: rockchip: rename some of clks for rv1108 SoC
clk: rockchip: fix up some clks describe error for rv1108 SoC
clk: rockchip: support more clks for rv1108
clk: rockchip: fix up the pll clks error for rv1108 SoC
clk: rockchip: support more rates for rv1108 cpuclk
clk: rockchip: fix up indentation of some RV1108 clock-ids
clk: rockchip: rename the clk id for HCLK_I2S1_2CH
clk: rockchip: add more clk ids for rv1108
Usual improvements:
- Added support for fixed post-divider on divider and NKM-style clocks
- Added driver for R40 CCU
Non critical fixes (from round 1):
- Fix sunxi-ng/ccu-sunxi-r.h header file guard macro typo
- Make fractional clock modes really used and correctly configured
- Make H3 cpu clock rate change correctly to be used with cpufreq
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Merge tag 'sunxi-clk-for-4.14-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-next
Pull Allwinner clock changes from Chen-Yu Tsai:
* Added support for fixed post-divider on divider and NKM-style clocks
* Added driver for R40 CCU
* Fix sunxi-ng/ccu-sunxi-r.h header file guard macro typo
* Make fractional clock modes really used and correctly configured
* Make H3 cpu clock rate change correctly to be used with cpufreq
* tag 'sunxi-clk-for-4.14-2' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
clk: sunxi-ng: support R40 SoC
dt-bindings: add compatible string for Allwinner R40 CCU
clk: sunxi-ng: nkm: add support for fixed post-divider
clk: sunxi-ng: div: Add support for fixed post-divider
dt-bindings: clock: sunxi-ccu: Add compatibles for sun5i CCU driver
clk: sunxi-ng: allow set parent clock (PLL_CPUX) for CPUX clock on H3
clk: sunxi-ng: h3: gate then ungate PLL CPU clk after rate change
clk: sunxi-ng: Wait for lock when using fractional mode
clk: sunxi-ng: Make fractional helper less chatty
clk: sunxi-ng: multiplier: Fix fractional mode
clk: sunxi-ng: Fix fractional mode for N-M clocks
clk: sunxi-ng: Fix header guard of ccu-sun8i-r.h
Changes in definitions of audio related clocks for Exynos5420/5422/5800
SoCs: a fix of mau_epll clock definition and changes enabling clock rate
setting propagation on a path from the I2S IP block up the EPLL.
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Merge tag 'clk-v4.14-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk into clk-next
Pull Samsung clk driver updates from Sylwester Nawrocki:
Changes in definitions of audio related clocks for Exynos5420/5422/5800
SoCs: a fix of mau_epll clock definition and changes enabling clock rate
setting propagation on a path from the I2S IP block up the EPLL.
* tag 'clk-v4.14-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk:
clk: samsung: exynos542x: Enable clock rate propagation up to the EPLL
clk: samsung: Add CLK_SET_RATE_PARENT to some AUDSS CLK CON clocks
clk: samsung: Fix mau_epll clock definition for exynos5422
The source clock ordering is wrong, as shown in the TRM:
cru_sel24_con[8]
rmii_extclk_sel
clock source select control register
1'b0: from internal PLL
1'b1: from external IO
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Reviewed-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This MAC has no internal phy for rv1108 and the whole clock
infrastructure hasn't been used yet, so is safe to fix.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Reviewed-by: David Wu <david.wu@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
In some special circumstances, may be need to reparent clk for sclk_sdio_src.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Allwinner R40 SoC have a clock controller module in the style of the
SoCs beyond sun6i, however, it's more rich and complex.
Add support for it.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
R-Car USB 2.0 controller can change the clock source from an oscillator
to an external clock via a register. So, this patch adds support
the clock source selector as a clock driver.
Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Add R-Car D3 (R8A77995) Clock Pulse Generator / Module Standby and
Software Reset support, using the CPG/MSSR driver core and the common
R-Car Gen3 CPG code.
Based on the R-Car Series, 3rd Generation Hardware User's Manual, Rev.
0.55, Jun. 30, 2017.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Acked-by: Rob Herring <robh@kernel.org>
On R-Car Gen3 SoCs with a Spread Spectrum Clock Generator (e.g. R-Car
D3), a peripheral clock divider has been added, to select between clean
and spread spectrum parents.
Add a new clock type to the R-Car Gen3 driver core to handle this.
To avoid increasing the size of struct cpg_core_clk, both parents and
dividers are stored in the existing parent resp. div fields.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
On some R-Car Gen3 SoCs (e.g. R-Car D3), PLL1 and PLL3 use a divider
value different from one. Extend struct rcar_gen3_cpg_pll_config to handle
this. As all multipliers and dividers are small, table size increase
can be kept limited by storing them in u8s instead of unsigned ints,
which saves ca. 0.5 KiB for a generic kernel.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
SATA PLL on Allwinner R40 is of type (parent) * N * K / M / 6 where 6 is
the fixed post-divider.
Add post-divider support for NKM type clock.
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
[wens@csie.org: Fixed application of post-divider in set_rate callback]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
SATA clock on sun4i/sun7i is of type (parent) / M / 6 where
6 is fixed post-divider.
Signed-off-by: Priit Laes <plaes@plaes.org>
Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
The CLK_SET_RATE_PARENT flag is added to clocks between the EPLL
and the audio subsystem clock controller so that the EPLL's output
frequency can be set indirectly with clk_set_rate() on a leaf clock.
That should be safe as EPLL is normally only used to generate clock
for the audio subsystem.
With this change we can avoid passing the EPLL clock to the ASoC
machine driver.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
This allows clk rate propagation up to the clock tree so EPLL
can be reprogrammed indirectly when setting rate of the Audio
Subsystem clocks.
The advantage is that sound machine driver can operate only
on the leaf clocks rather than explicitly re-configuring
the root clock (EPLL).
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
Parent clock of the MAU_EPLL gate clock on exynos5422 is
"mout_user_mau_epll", not "mout_mau_epll_clk". This change
only affects exynos5422/5800.
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
>From Rockchips fractional divider description:
3.1.9 Fractional divider usage
To get specific frequency, clocks of I2S, SPDIF, UARTcan be generated by
fractional divider. Generally you must set that denominator is 20 times
larger than numerator to generate precise clock frequency. So the
fractional divider applies only to generate low frequency clock like
I2S, UART.
Therefore add a special approximation function that handles this
special requirement.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Fractional dividers may have special requirements concerning numerator
and denominator selection that differ from just getting the best
approximation.
For example on Rockchip socs the denominator must be at least 20 times
larger than the numerator to generate precise clock frequencies.
Therefore add the ability to provide custom approximation functions.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
rk3128 and rk3126 have some gate registers describe differences.
So need to make some distinctions.
The RK3126 and RK3128 Same clock description we move it to
the common clock branches.
And the different clks description use the own clock branches.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
the bus/periph/nclk_ddrupctl/pclk_ddrmon/pclk_acodecphy/pclk_pmu
no driver to handle them,
Chip design requirements for these clock to always on.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Rename some of clks to keep the consistency with the TRM.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
1. fix up the parent name
2. remove the CLK_IGNORE_UNUSED flag for some clk not need to always on.
3. fix up some clks regs describe error.
Signed-off-by: Elaine Zhang <zhangqing@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Geert Uytterhoeven