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git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux into clk-next
Pull tegra clk drivers updates from Thierry Reding:
This contains cleanups and minor fixes for the Tegra clock driver.
* tag 'tegra-for-4.15-clk-2' of git://git.kernel.org/pub/scm/linux/kernel/git/tegra/linux:
clk: tegra: Use readl_relaxed_poll_timeout_atomic() in tegra210_clock_init()
clk: tegra: dfll: Fix drvdata overwriting issue
clk: tegra: Fix cclk_lp divisor register
clk: tegra: Bump SCLK clock rate to 216 MHz
clk: tegra: Use common definition of APBDMA clock gate
clk: tegra: Correct parent of the APBDMA clock
clk: tegra: Add AHB DMA clock entry
clk: tegra: Mark APB clock as critical
clk: tegra: Make tegra_clk_pll_params __ro_after_init
clk: tegra: Fix sor1_out clock implementation
clk: tegra: Use tegra_clk_register_periph_data()
clk: tegra: Add peripheral clock registration helper
clk: tegra: Check BPMP response return code
dt-bindings: clock: tegra: Add sor1_out clock
firmware: tegra: Propagate error code to caller
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Below is the call trace of tegra210_init_pllu() function:
start_kernel()
-> time_init()
--> of_clk_init()
---> tegra210_clock_init()
----> tegra210_pll_init()
-----> tegra210_init_pllu()
Because the preemption is disabled in the start_kernel before calling
time_init, tegra210_init_pllu is actually in an atomic context while
it includes a readl_relaxed_poll_timeout that might sleep.
So this patch just changes this readl_relaxed_poll_timeout() to its
atomic version.
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Both tegra124-dfll and clk-dfll are using platform_set_drvdata
to set drvdata of the exact same pdev while they use different
pointers for the drvdata. Once the drvdata has been overwritten
by tegra124-dfll, clk-dfll will never get its td pointer as it
expects.
Since tegra124-dfll merely needs its soc pointer in its remove
function, this patch fixes the bug by removing the overwriting
in the tegra124-dfll file and letting the tegra_dfll_unregister
return an soc pointer for it.
Signed-off-by: Nicolin Chen <nicoleotsuka@gmail.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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According to comments in code and common sense, cclk_lp uses its
own divisor, not cclk_g's.
Fixes: b08e8c0ecc42 ("clk: tegra: add clock support for Tegra30")
Signed-off-by: Michał Mirosław <mirq-linux@rere.qmqm.pl>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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AHB DMA is a running on 1/2 of SCLK rate, APB DMA on 1/4. Increasing SCLK
rate results in an increased DMA transfer rate.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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The APBDMA clock is defined in the common clock gates table that is used
by Tegra30+. Tegra20 can use it too, let's remove the custom definition
and use the common one.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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APBDMA represents a clock gate to the APB DMA controller, the actual
clock source for the controller is PCLK.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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AHB DMA engine presents on Tegra20/30. Add missing clock entries, so that
driver for the AHB DMA controller could be implemented.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Currently, the APB clock is registered with the CLK_IGNORE_UNUSED flag
to prevent the clock from being disabled if unused on boot. However,
even if it is used, it still needs to be always kept enabled so that it
doesn't get inadvertently disabled when all of its children are, and so
update the flag for the APB clock to be CLK_IS_CRITICAL.
Suggested-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Acked-By: Peter De Schrijver <pdeschrijver@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into clk-next
Pull Rockchip clk drivers updates from Heiko Stuebner:
- new clock ids for rk3188 and rk3368
- removal of a superfluous memory allocation error message
* tag 'v4.15-rockchip-clk-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
clk: rockchip: use new cif/vdpu clock ids on rk3188
clk: rockchip: export clock pclk_efuse_256 for RK3368 SoCs
clk: rockchip: add more rk3188 graphics clock ids
clk: rockchip: add clock id for PCLK_EFUSE256 of RK3368 SoCs
clk: rockchip: Remove superfluous error message in rockchip_clk_register_cpuclk()
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next
Pull Renesas clk driver updates from Geert Uytterhoeven:
- Add support for the second display unit clock on RZ/G1E,
- Add git repository to MAINTAINERS,
- Add suspend/resume support for R-Car Gen3 CPG/MSSR,
- Small fixes and cleanups.
* tag 'clk-renesas-for-v4.15-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
clk: renesas: rcar-gen3: Restore R clock during resume
clk: renesas: rcar-gen3: Restore SDHI clocks during resume
clk: renesas: div6: Restore clock state during resume
clk: renesas: cpg-mssr: Add support to restore core clocks during resume
clk: renesas: cpg-mssr: Restore module clocks during resume
MAINTAINERS: Add git repository to Renesas clock driver section
clk: renesas: cpg-mssr: Add du1 clock to R8A7745
clk: renesas: rz: clk-rz is meant for RZ/A1
clk: renesas: r8a77995: Correct parent clock of INTC-AP
clk: renesas: r8a7796: Correct parent clock of INTC-AP
clk: renesas: r8a7795: Correct parent clock of INTC-AP
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clk-next
Pull Amlogic clock driver updates from Neil Armstrong:
- Addition of Video Processing Unit VPU and VAPB clocks
* tag 'meson-clk-for-4.15' of git://github.com/baylibre/clk-meson:
clk: meson: gxbb: Add VPU and VAPB clocks data
clk: meson: gxbb: Add VPU and VAPB clockids
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https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into clk-next
Pull Allwinner clock driver updates from Maxime Ripard:
- Addition of sigma/delta modulation for the audio PLLs on the newer SoCs
- A83t Display clocks supports
- minor fixes that didn't have any impact on current features
* tag 'sunxi-clk-for-4.15' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
clk: sunxi-ng: sun4i: Export video PLLs
clk: sunxi-ng: Add A83T display clocks
clk: sunxi-ng: sun8i: a23: Use sigma-delta modulation for audio PLL
clk: sunxi-ng: sun6i: Use sigma-delta modulation for audio PLL
clk: sunxi-ng: sun5i: Use sigma-delta modulation for audio PLL
clk: sunxi-ng: sun4i: Use sigma-delta modulation for audio PLL
clk: sunxi-ng: sun8i: h3: Use sigma-delta modulation for audio PLL
clk: sunxi-ng: nm: Add support for sigma-delta modulation
clk: sunxi-ng: Add sigma-delta modulation support
clk: sunxi-ng: nm: Check if requested rate is supported by fractional clock
clk: sunxi-ng: sun5i: Fix bit offset of audio PLL post-divider
clk: sunxi-ng: a83t: Fix invalid csi-mclk mux offset
clk: sunxi-ng: sun6i: Rename HDMI DDC clock to avoid name collision
clk: sunxi-ng: sun6i: Export video PLLs
clk: sunxi-ng: Implement reset control status readback
clk: sunxi-ng: Fix missing CLK_SET_RATE_PARENT in ccu-sun4i-a10.c
clk: sunxi-ng: add CLK_SET_RATE_PARENT flag to H3 GPU clock
clk: sunxi-ng: add CLK_SET_RATE_UNGATE to all H3 PLLs
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git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk into clk-next
Pull Samsung clk driver updates from Sylwester Nawrocki:
- An addition of separate driver for the Exynos 4412 ISP CMU, needed
to model and properly handle the clock controller's dependencies
on the ISP power domain.
- Adding __maybe_unused attributes to the exynos5433_cmu_{suspend,
resume} ops to suppress compiler warnings with CONFIG_PM disabled.
* tag 'clk-v4.15-exynos-pm' of git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk:
clk: samsung: Add a separate driver for Exynos4412 ISP clocks
clk: samsung: Add dt bindings for Exynos4412 ISP clock controller
clk: samsung: Instantiate Exynos4412 ISP clocks only when available
clk: samsung: exynos5433: mark PM functions as __maybe_unused
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git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk into clk-next
Pull Samsung clk driver updates from Sylwester Nawrocki:
Overall clk/samsung clean up and fixes. Removed remaining unused code
after removal of exynos4212 SoC support; dropped internal data structure
fields and related code for registering clkdev lookup entry for each
possible clock object, clkdev aliases could still be defined if needed
in a separate table; other minor fixes of the clock tree definitions.
* tag 'clk-v4.15-samsung' of git://git.kernel.org/pub/scm/linux/kernel/git/snawrocki/clk:
clk: samsung: Remove obsolete clkdev alias support
clk: samsung: Add explicit MPLL, EPLL clkdev aliases in S3C2443 driver
clk: samsung: Rework clkdev alias handling in S3C2443 driver
clk: samsung: Rework clkdev alias handling in Exynos5440 driver
clk: samsung: Drop useless alias in Exynos5420 clk driver
clk: samsung: Remove clkdev alias support in Exynos5250 clk driver
clk: samsung: Remove double assignment of CLK_ARM_CLK in Exynos4 driver
clk: samsung: Remove clkdev alias support in Exynos4 clk driver
clk: samsung: Remove support for obsolete Exynos4212 CPU clock
clk: samsung: Remove support for Exynos4212 SoCs in Exynos CLKOUT driver
clk: samsung: Properly propagate flags in __PLL macro
clk: samsung: Fix m2m scaler clock on Exynos542x
clk: samsung: Delete a memory allocation error message in clk-cpu.c
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git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers into clk-next
Pull Renesas clk driver updates from Geert Uytterhoeven:
- Add support for the new R-Car V3M SoC,
- Small fixes and cleanups.
* tag 'clk-renesas-for-v4.15-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/geert/renesas-drivers:
clk: renesas: rcar-gen2: Delete error message for failed memory allocation
clk: renesas: mstp: Delete error messages for failed memory allocations
clk: renesas: cpg-mssr: Add R8A77970 support
dt-bindings: clock: Add R8A77970 CPG core clock definitions
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On R-Car Gen3 systems, PSCI system suspend powers down the SoC, losing
clock configuration. Register a notifier to save/restore the RCKCR
register during system suspend/resume.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
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On R-Car Gen3 systems, PSCI system suspend powers down the SoC, losing
clock configuration. Register a notifier to save/restore SDHI clock
registers during system suspend/resume.
This is implemented using the cpg_simple_notifier abstraction, which can
be reused for others clocks that just need to save/restore a single
register.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
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On R-Car Gen3 systems, PSCI system suspend powers down the SoC, losing
clock configuration. Register an (optional) notifier to restore the
DIV6 clock state during system resume.
As DIV6 clocks can be picky w.r.t. modifying multiple register fields at
once, restore is not implemented by blindly restoring the register
value, but by using the existing cpg_div6_clock_{en,dis}able() helpers.
Note that this does not yet support DIV6 clocks with multiple parents,
which do not exist on R-Car Gen3 SoCs.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
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On R-Car Gen3 systems, PSCI system suspend powers down the SoC, possibly
losing clock configuration. Hence add a notifier chain that can be used
by core clocks to save/restore clock state during system suspend/resume.
The implementation of the actual clock state save/restore operations is
clock-specific, and to be registered with the notifier chain in the SoC
or family-specific cpg_mssr_info.cpg_clk_register() callback.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
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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>
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Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Stephen Boyd <sboyd@codeaurora.org>
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Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Reviewed-by: Biju Das <biju.das@bp.renesas.com>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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>
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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: 763c5bd045b1 ("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>
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The sor1_src clock implemented on Tegra210 is modelled the wrong way
around, which causes some issues with HDMI and DP support. This clock
implementation is provided by BPMP on Tegra186, which models this in
a more correct way. Since this introduces incompatibilities between
the two SoC generations which we want to avoid, the Tegra210 will be
fixed in subsequent patches.
This change adds sor1_out as an alias for sor1_src.
Signed-off-by: Thierry Reding <treding@nvidia.com>
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Response messages from Tegra BPMP firmware contain an error return code
as the first word of payload. The error code is used to indicate
incorrectly formatted request message or use of non-existing resource
(clk, reset, powergate) identifier. Current implementation of
tegra_bpmp_transfer() ignores this code and does not pass it to caller.
Fix this by adding an extra struct member to tegra_bpmp_message and
populate that with return code.
Signed-off-by: Timo Alho <talho@nvidia.com>
Acked-by: Jon Hunter <jonathanh@nvidia.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
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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>
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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.
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Acked-by: Krzysztof Kozlowski <krzk@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sylwester Nawrocki <s.nawrocki@samsung.com>
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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>
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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>
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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>
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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>
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Use the new clock-ids for cif, vdpu, vepu on rk3188
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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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>
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Add ids for cif, v{d/e}pu clocks on rk3188. ACLK_CIF does get a needed
1 at it's end but that should be safe because no driver for the camera
interface has surfaced so far and the old vendor kernels for these socs
are based on linux-3.0 and still used board files then, so there really
are no previous users anywhere to be found.
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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Signed-off-by: Romain Perier <romain.perier@collabora.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
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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>
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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>
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