linux-kernel - Re: [PATCH RFT v6 1/5] drm/msm/adreno: Implement SMEM-based speed bin

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Message-ID: <ee44260b-13cb-4901-a073-2b9bfac2a794@oss.qualcomm.com>
Date: Wed, 30 Apr 2025 18:25:23 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: neil.armstrong@...aro.org, Konrad Dybcio <konradybcio@...nel.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <lumag@...nel.org>, David Airlie <airlied@...il.com>,
        Simona Vetter <simona@...ll.ch>,
        Bjorn Andersson <andersson@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc: Marijn Suijten <marijn.suijten@...ainline.org>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: Re: [PATCH RFT v6 1/5] drm/msm/adreno: Implement SMEM-based speed bin

On 4/30/25 6:20 PM, neil.armstrong@...aro.org wrote:
> On 30/04/2025 13:34, Konrad Dybcio wrote:
>> From: Konrad Dybcio <konrad.dybcio@...aro.org>
>>
>> On recent (SM8550+) Snapdragon platforms, the GPU speed bin data is
>> abstracted through SMEM, instead of being directly available in a fuse.
>>
>> Add support for SMEM-based speed binning, which includes getting
>> "feature code" and "product code" from said source and parsing them
>> to form something that lets us match OPPs against.
>>
>> Due to the product code being ignored in the context of Adreno on
>> production parts (as of SM8650), hardcode it to SOCINFO_PC_UNKNOWN.
>>
>> Signed-off-by: Konrad Dybcio <konrad.dybcio@...aro.org>
>> ---

[...]

>> +/* As of SM8650, PCODE on production SoCs is meaningless wrt the GPU bin */
> 
> This should be SM8550

No, this is 8650 to signify that this holds true even later
Looking into it, I can even say 8750 here now

Konrad