linux-kernel - Re: [PATCH 2/3] arm64: dts: qcom: sm8150: Add DISPCC node

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Date:   Thu, 29 Dec 2022 00:10:53 +0100
From:   Marijn Suijten <marijn.suijten@...ainline.org>
To:     Bjorn Andersson <andersson@...nel.org>
Cc:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        linux-arm-msm@...r.kernel.org, agross@...nel.org,
        krzysztof.kozlowski@...aro.org, Rob Clark <robdclark@...il.com>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Sean Paul <sean@...rly.run>, David Airlie <airlied@...il.com>,
        Daniel Vetter <daniel@...ll.ch>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/3] arm64: dts: qcom: sm8150: Add DISPCC node

On 2022-12-27 22:16:58, Bjorn Andersson wrote:
> On Mon, Dec 12, 2022 at 10:33:13AM +0100, Konrad Dybcio wrote:
> > [..]
> > +			power-domains = <&rpmhpd SM8150_MMCX>;
> > +			/* TODO: Maybe rpmhpd_opp_min_svs could work as well? */
> 
> The power-domain being not disabled should be sufficient for us to
> access the dispcc. Beyond that votes would be needed for particular
> frequencies, and that goes in the client nodes/opp-tables.
> 
> So you should be able to drop this comment and the required-opps.
> 
> Regards,
> Bjorn
> 
> > +			required-opps = <&rpmhpd_opp_low_svs>;

Tested the removal of this on Xperia 5, no regressions.

- Marijn