linux-kernel - Re: [PATCH 0/2] drm/msm/a2xx: enable Adreno A225 support

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Message-ID: <a4a487e8-4dd3-4187-980e-f77e97d0e85a@oss.qualcomm.com>
Date: Sat, 22 Nov 2025 14:26:44 +0100
From: Konrad Dybcio <konrad.dybcio@....qualcomm.com>
To: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
Cc: Rob Clark <robin.clark@....qualcomm.com>, Sean Paul <sean@...rly.run>,
        Konrad Dybcio <konradybcio@...nel.org>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jesszhan0024@...il.com>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        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 0/2] drm/msm/a2xx: enable Adreno A225 support

On 11/21/25 9:38 PM, Dmitry Baryshkov wrote:
> On Fri, Nov 21, 2025 at 08:36:08PM +0100, Konrad Dybcio wrote:
>> On 11/21/25 5:13 PM, Dmitry Baryshkov wrote:
>>> Add two remaining bits necessary to enable Adreno A225 support.
>>> Note, this wasn't tested on the actual hardware and is purely based on
>>> the old KGSL driver from msm-3.0. For example, running on MSM8960 might
>>> require adjusting PM_OVERRIDE[12] registers.
>>>
>>> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
>>> ---
>>> Dmitry Baryshkov (2):
>>>       drm/msm/a2xx: fix pixel shader start on A225
>>>       drm/msm/a2xx: add A225 entry to catalog
>>
>> Not sure that's enough, a2xx_drawctxt_draw_workaround looks scary
>>
>> https://github.com/AdrianDC/android_kernel_sony_msm8960t/blob/lineage-18.1/drivers/gpu/msm/adreno_a2xx.c
> 
> Yep. msm-3.0 does some other things for a200 / a220, which we don't
> perform. I don't know which parts actually apply to our stack and which
> don't.

Right, this patchset at least fixes up the obvious errors and those
interested can poke at it more

Konrad