linux-kernel - Re: [PATCH 3/4] arm64: dts: qcom: msm8996: Improve GPU OPP table

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Message-ID: <60cbc599-e95b-4723-9cc0-525bfe5cfcbb@linaro.org>
Date:   Wed, 9 Aug 2023 01:47:08 +0200
From:   Konrad Dybcio <konrad.dybcio@...aro.org>
To:     Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...ainline.org>,
        Jordan Crouse <jordan@...micpenguin.net>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>,
        Vinod Koul <vkoul@...nel.org>, Rob Clark <robdclark@...il.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Andy Gross <andy.gross@...aro.org>
Subject: Re: [PATCH 3/4] arm64: dts: qcom: msm8996: Improve GPU OPP table

On 26.05.2023 15:30, Konrad Dybcio wrote:
> 
> 
> On 30.03.2023 12:57, Konrad Dybcio wrote:
>>
>>
>> On 29.03.2023 23:32, Dmitry Baryshkov wrote:
>>> On Wed, 29 Mar 2023 at 22:17, Konrad Dybcio <konrad.dybcio@...aro.org> wrote:
>>>>
>>>> Remove the self-explanatory comment about opp-supported-hw contents,
>>>> add required-opps to ensure reasonable power domain levels are voted
>>>> for (currently we've been piggybacking off of miracles and MDP votes)
>>>> and add newlines between each subnode.
>>>
>>> I'm not sure this is 100% correct. The values that you add are correct
>>> for the voltage scaling case. However, based on the vendor kernel
>>> sources I think that MX should only be scaled if the voltage is scaled
>>> too. I might be wrong here.
>> MX must be >= CX (and GX), so this should bring no harm.
>>
>> (citation needed, but that seems to hold true..)
> With that in mind, would you ack these patches Dmitry?
Bump?

Konrad