[PATCH v4 0/5] exynos-acpm: add DVFS protocol and clock driver

Peter Griffin peter.griffin at linaro.org
Fri Sep 12 07:58:32 PDT 2025


On Mon, 8 Sept 2025 at 14:13, Tudor Ambarus <tudor.ambarus at linaro.org> wrote:
>
> Dependencies description:
> All patches should go through the Samsung SoC tree.
> The acpm-clk driver (#4) depends on the ACPM DVFS ops (#2).
> If the clock subsystem needs to merge the new clock driver, it will
> need an immutable tag with the 2 patches.
> No dependecies for #1, #3, #5.
>
> The Alive CLock and Power Manager (ACPM) firmware exposes clocks that
> are variable and index based. These clocks don't provide an entire range
> of values between the limits but only discrete points within the range.
> The firmware also manages the voltage scaling appropriately with the
> clock scaling. Make the ACPM node a clock provider.
>
> Add support for the ACPM DVFS protocol. It translates clock frequency
> requests to messages that can be interpreted by the ACPM firmware.
> Add an ACPM clock driver to model the clocks exposed by the ACPM firmware.
>
> Thanks,
> ta
>
> Signed-off-by: Tudor Ambarus <tudor.ambarus at linaro.org>
> ---

Reviewed-by: Peter Griffin <peter.griffin at linaro.org>
Tested-by: Peter Griffin <peter.griffin at linaro.org> # on gs101-oriole



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