linux-kernel - Re: [PATCH v7 0/6] clk: qcom: use power-domain for sm8250's clock controllers

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Date:   Wed, 6 Oct 2021 14:42:33 +0300
From:   Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
To:     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>
Cc:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-clk@...r.kernel.org,
        Bryan O'Donoghue <bryan.odonoghue@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v7 0/6] clk: qcom: use power-domain for sm8250's clock
 controllers

Hi,

On 29/08/2021 18:47, Dmitry Baryshkov 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-pm/1628767642-4008-1-git-send-email-rnayak@codeaurora.org/
> (pending inclusion into 5.15)


Gracious ping for this patch series.

> 
> Changes since v6:
>   - Dropped dependency on Bjorn's patches
>   - Restored required-opps properties
>   - Held pm device state while gdsc is powered on, removing dependency on
>     genpd's power_on() powering the domain into required state.
> 
> 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         | 13 ++++++
>   .../devicetree/bindings/clock/qcom,videocc.yaml    | 13 ++++++
>   arch/arm64/boot/dts/qcom/sm8250.dtsi               | 13 ++----
>   drivers/clk/qcom/dispcc-sm8250.c                   | 28 ++++++++++--
>   drivers/clk/qcom/gdsc.c                            | 51 ++++++++++++++++++++--
>   drivers/clk/qcom/gdsc.h                            |  2 +
>   drivers/clk/qcom/videocc-sm8250.c                  | 31 ++++++++++---
>   7 files changed, 130 insertions(+), 21 deletions(-)
> 
> 
> 


-- 
With best wishes
Dmitry