linux-kernel - Re: [PATCH v6 0/6] clk: qcom: use power-domain for sm8250's clock controllers

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Date:   Tue, 10 Aug 2021 13:11:18 +0200
From:   Ulf Hansson <ulf.hansson@...aro.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Taniya Das <tdas@...eaurora.org>,
        Jonathan Marek <jonathan@...ek.ca>,
        Michael Turquette <mturquette@...libre.com>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        DTML <devicetree@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        "Bryan O'Donoghue" <bryan.odonoghue@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 0/6] clk: qcom: use power-domain for sm8250's clock controllers

On Tue, 27 Jul 2021 at 22:20, Dmitry Baryshkov
<dmitry.baryshkov@...aro.org> wrote:
>
> On SM8250 both the display and video clock controllers are powered up by
> the MMCX power domain. Handle this by linking clock controllers to the
> proper power domain, and using runtime power management to enable and
> disable the MMCX power domain.
>
> Dependencies:
> - https://lore.kernel.org/linux-arm-msm/20210703005416.2668319-1-bjorn.andersson@linaro.org/
>   (pending)
>
> Changes since v5:
>  - Dropped devm_pm_runtime_enable callback to remove extra dependency
>
> Changes since v4:
>  - Dropped pm_runtime handling from drivers/clk/qcom/common.c Moved the
>    code into dispcc-sm8250.c and videocc-sm8250.c
>
> Changes since v3:
>  - Wrap gdsc_enable/gdsc_disable into pm_runtime_get/put calls rather
>    than calling pm_runtime_get in gdsc_enabled and _put in gdsc_disable
>  - Squash gdsc patches together to remove possible dependencies between
>    two patches.
>
> Changes since v2:
>  - Move pm_runtime calls from generic genpd code to the gdsc code for
>    now (as suggested by Ulf & Bjorn)
>
> Changes since v1:
>  - Rebase on top of Bjorn's patches, removing the need for setting
>    performance state directly.
>  - Move runtime PM calls from GDSC code to generic genpd code.
>  - Always call pm_runtime_enable in the Qualcomm generic clock
>    controller code.
>  - Register GDSC power domains as subdomains of the domain powering the
>    clock controller if there is one.
>
> ----------------------------------------------------------------
> Dmitry Baryshkov (8):
>       dt-bindings: clock: qcom,dispcc-sm8x50: add mmcx power domain
>       dt-bindings: clock: qcom,videocc: add mmcx power domain
>       clk: qcom: dispcc-sm8250: use runtime PM for the clock controller
>       clk: qcom: videocc-sm8250: use runtime PM for the clock controller
>       clk: qcom: gdsc: enable optional power domain support
>       arm64: dts: qcom: sm8250: remove mmcx regulator
>       clk: qcom: dispcc-sm8250: stop using mmcx regulator
>       clk: qcom: videocc-sm8250: stop using mmcx regulator
>
>  .../bindings/clock/qcom,dispcc-sm8x50.yaml         |  7 +++
>  .../devicetree/bindings/clock/qcom,videocc.yaml    |  7 +++
>  arch/arm64/boot/dts/qcom/sm8250.dtsi               | 11 +---
>  drivers/clk/qcom/dispcc-sm8250.c                   | 28 ++++++++--
>  drivers/clk/qcom/gdsc.c                            | 59 ++++++++++++++++++++--
>  drivers/clk/qcom/gdsc.h                            |  2 +
>  drivers/clk/qcom/videocc-sm8250.c                  | 31 +++++++++---
>  7 files changed, 124 insertions(+), 21 deletions(-)
>

For the series:

Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>

Kind regards
Uffe