linux-kernel - Re: [PATCH v2] drm/msm/dpu: Set vsync source irrespective of mdp top support

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Message-ID: <52avqc3n4fxuypv6fkejuxkmuounxa67e5lsnfeynek6yxq6tm@ink6yoklpxes>
Date: Fri, 21 Nov 2025 14:16:55 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: Teguh Sobirin <teguh@...ir.in>
Cc: Rob Clark <robin.clark@....qualcomm.com>,
        Dmitry Baryshkov <lumag@...nel.org>,
        Abhinav Kumar <abhinav.kumar@...ux.dev>,
        Jessica Zhang <jesszhan0024@...il.com>, Sean Paul <sean@...rly.run>,
        Marijn Suijten <marijn.suijten@...ainline.org>,
        David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
        linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] drm/msm/dpu: Set vsync source irrespective of mdp top
 support

On Fri, Nov 21, 2025 at 02:02:08PM +0800, Teguh Sobirin wrote:
> Since DPU 5.x the vsync source TE setup is split between MDP TOP and
> INTF blocks.  Currently all code to setup vsync_source is only exectued
> if MDP TOP implements the setup_vsync_source() callback. However on
> DPU >= 8.x this callback is not implemented, making DPU driver skip all
> vsync setup. Move the INTF part out of this condition, letting DPU
> driver to setup TE vsync selection on all new DPU devices.
> 
> Signed-off-by: Teguh Sobirin <teguh@...ir.in>
> ---
> Changes in v2:
> - Corrected commit message suggested by Dmitry Baryshkov.
> - Link to v1: https://lore.kernel.org/linux-arm-msm/TYUPR06MB6099CBBE5090DB12A2C187E3DDFDA@TYUPR06MB6099.apcprd06.prod.outlook.com/
> ---
>  drivers/gpu/drm/msm/disp/dpu1/dpu_encoder.c | 22 +++++++++------------
>  1 file changed, 9 insertions(+), 13 deletions(-)

Fixes: e955a3f0d86e ("drm/msm/dpu: Implement tearcheck support on INTF block")


Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>


-- 
With best wishes
Dmitry