linux-kernel - Re: [PATCH 1/5] drm/msm/a6xx: Fix gpucc register block for A621

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Message-ID: <2bfaa1ce-0233-456d-ba2e-5b14533f3812@oss.qualcomm.com>
Date: Thu, 13 Feb 2025 17:36:22 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Akhil P Oommen <quic_akhilpo@...cinc.com>,
        Rob Clark
 <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
        Maxime Ripard <mripard@...nel.org>,
        Thomas Zimmermann <tzimmermann@...e.de>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Caleb Connolly <caleb.connolly@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Jie Zhang <quic_jiezh@...cinc.com>
Subject: Re: [PATCH 1/5] drm/msm/a6xx: Fix gpucc register block for A621

On 13.02.2025 5:10 PM, Akhil P Oommen wrote:
> From: Jie Zhang <quic_jiezh@...cinc.com>
> 
> Adreno 621 has a different memory map for GPUCC block. So update
> a6xx_gpu_state code to dump the correct set of gpucc registers.
> 
> Signed-off-by: Jie Zhang <quic_jiezh@...cinc.com>
> Signed-off-by: Akhil P Oommen <quic_akhilpo@...cinc.com>
> ---

So GPU_CC is outside what we consider GPU register region upstream..

And I've heard voices (+Caleb) lately that we should get some clock register
dumping infrastructure..

So while I'm not against this patch fixing a bug, perhaps we can get rid of
dumping GPU_CC here in the near future

Konrad