linux-kernel - Re: [PATCH 0/8] Flush RSC votes properly on more RPMh platforms

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Message-ID: <fec8f422-e00b-4ca2-ae8b-28034e16eb36@linaro.org>
Date:   Wed, 31 May 2023 16:25:49 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Melody Olvera <quic_molvera@...cinc.com>,
        Vinod Koul <vkoul@...nel.org>,
        Richard Acayan <mailingradian@...il.com>,
        Lina Iyer <ilina@...eaurora.org>,
        Douglas Anderson <dianders@...omium.org>,
        Neil Armstrong <neil.armstrong@...aro.org>,
        Abel Vesa <abel.vesa@...aro.org>,
        Sai Prakash Ranjan <quic_saipraka@...cinc.com>
Cc:     Marijn Suijten <marijn.suijten@...ainline.org>,
        Bartosz Golaszewski <bartosz.golaszewski@...aro.org>,
        Luca Weiss <luca.weiss@...rphone.com>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Andy Gross <andy.gross@...aro.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>
Subject: Re: [PATCH 0/8] Flush RSC votes properly on more RPMh platforms



On 31.05.2023 15:22, Konrad Dybcio wrote:
> As pointed out in [1], the Linux implementation of RSC basically requires
> (even if not explicitly) that we point it to a power domain which
> represents the power state of the CPUs. In an effort to fulfill that
> requirement, make it required in bindings and hook it up on all platforms
> where I was able to do. This means all RPMh platforms, except
> 
> - SC7180
> - SC7280
> - SA8775
> 
> As there wasn't an idle-states setup (which may be on purpose for CrOS
> devices, certainly not for Windows SC7[12]80s) that I could validate.
> (Doug, Bartosz, could you guys look into your respective platforms of
> interest here?)
> 
> This series also adds support for idle states on SM6350, as I was able
> to add and test that.
I noticed that 7280 is WIP:

> 
> [1] https://lore.kernel.org/linux-arm-msm/20230512150425.3171122-1-quic_bjorande@quicinc.com/
> 
> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
> ---
> Konrad Dybcio (8):
>       dt-bindings: soc: qcom,rpmh-rsc: Require power-domains
>       arm64: dts: qcom: sm6350: Add PSCI idle states
>       arm64: dts: qcom: qdu1000: Flush RSC sleep & wake votes
>       arm64: dts: qcom: sc8180x: Flush RSC sleep & wake votes
>       arm64: dts: qcom: sdm670: Flush RSC sleep & wake votes
>       arm64: dts: qcom: sdm845: Flush RSC sleep & wake votes
>       arm64: dts: qcom: sm6350: Flush RSC sleep & wake votes
>       arm64: dts: qcom: sm8550: Flush RSC sleep & wake votes
> 
>  .../bindings/soc/qcom/qcom,rpmh-rsc.yaml           |   2 +
>  arch/arm64/boot/dts/qcom/qdu1000.dtsi              |   1 +
>  arch/arm64/boot/dts/qcom/sc8180x.dtsi              |   1 +
>  arch/arm64/boot/dts/qcom/sdm670.dtsi               |   1 +
>  arch/arm64/boot/dts/qcom/sdm845.dtsi               |   1 +
>  arch/arm64/boot/dts/qcom/sm6350.dtsi               | 142 +++++++++++++++++++++
>  arch/arm64/boot/dts/qcom/sm8550.dtsi               |   1 +
>  7 files changed, 149 insertions(+)
> ---
> base-commit: d4cee89031c80066ec461bb77b5e13a4f37d5fd2
> change-id: 20230531-topic-rsc-35e838da9afb
> 
> Best regards,