linux-kernel - Re: [PATCH 3/4] drm/msm/adreno: Add a modparam to skip GPU

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Message-ID: <b7a1b89b-54dd-4d02-afcd-0144df5a6d57@oss.qualcomm.com>
Date: Wed, 3 Sep 2025 11:25:49 +0200
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Akhil P Oommen <akhilpo@....qualcomm.com>,
        Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov
 <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jessica.zhang@....qualcomm.com>,
        Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Jordan Crouse <jordan@...micpenguin.net>,
        Jonathan Marek
 <jonathan@...ek.ca>, linux-arm-msm@...r.kernel.org,
        dri-devel@...ts.freedesktop.org, freedreno@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 3/4] drm/msm/adreno: Add a modparam to skip GPU

On 9/2/25 3:02 PM, Dmitry Baryshkov wrote:
> On Tue, Sep 02, 2025 at 02:30:48PM +0200, Konrad Dybcio wrote:
>> On 9/2/25 1:50 PM, Akhil P Oommen wrote:
>>> During bringup of a new GPU support, it is convenient to have knob to
>>> quickly disable GPU, but keep the display support. This helps to
>>> fallback to 'kms_swrast' in case of bootup issues due to GPU. Add a
>>> modparam to support this.
>>
>> I'm not entirely opposed, but slapping a // in front of the compatible
>> in the dt works just as well
> 
> Which requires rebuilding and reprovisioning

Fair

Konrad