Re: [PATCH V4 10/18] clk: tegra: add save and restore context support for peripheral clocks

Thierry Reding
2019-06-26T10:12:20Z

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On Sun, Jun 23, 2019 at 08:02:51PM -0700, Sowjanya Komatineni wrote:
> This patch implements save and restore context for peripheral fixed
> clock ops, peripheral gate clock ops, sdmmc mux clock ops, and
> peripheral clock ops.
>
> During system suspend, core power goes off and looses the settings
> of the Tegra CAR controller registers.
>
> So during suspend entry clock and reset state of peripherals is saved
> and on resume they are restored to have clocks back to same rate and
> state as before suspend.
>
> Signed-off-by: Sowjanya Komatineni <skomatineni@nvidia.com>
> ---
> drivers/clk/tegra/clk-periph-fixed.c | 31 ++++++++++++++++++++++++++
> drivers/clk/tegra/clk-periph-gate.c | 34 ++++++++++++++++++++++++++++
> drivers/clk/tegra/clk-periph.c | 43 ++++++++++++++++++++++++++++++++++++
> drivers/clk/tegra/clk-sdmmc-mux.c | 30 +++++++++++++++++++++++++
> drivers/clk/tegra/clk.h | 8 +++++++
> 5 files changed, 146 insertions(+)

Acked-by: Thierry Reding <treding@nvidia.com>

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