linux-kernel - Re: [PATCH 0/2] drm/msm/dpu: Revert broken parts of the quad pipe support

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Message-ID: <176656845705.3796981.11555430286508569316.b4-ty@oss.qualcomm.com>
Date: Wed, 24 Dec 2025 11:27:43 +0200
From: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
To: 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>,
        Abel Vesa <abel.vesa@....qualcomm.com>
Cc: Jun Nie <jun.nie@...aro.org>, 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/dpu: Revert broken parts of the quad pipe support

On Fri, 19 Dec 2025 12:39:00 +0200, Abel Vesa wrote:
> There are quite a few reports off-list that, at least on Hamoa based
> devices, there are some IOMMU faults and some abnormal artifacts on eDP.
> These have been traced to the quad pipe support introduced in 6.19-rc1.
> 
> Meanwhile, Marijn reported some issues in some dual-DSI dual-DSC scenario.
> 
> Off-list discussion concluded into reverting these two commits to avoid
> the described issues.
> 
> [...]

Applied to msm-fixes, thanks!

[1/2] Revert "drm/msm/dpu: support plane splitting in quad-pipe case"
      https://gitlab.freedesktop.org/lumag/msm/-/commit/35ab5123bd24
[2/2] Revert "drm/msm/dpu: Enable quad-pipe for DSC and dual-DSI case"
      https://gitlab.freedesktop.org/lumag/msm/-/commit/da9168d8ef1c

Best regards,
-- 
With best wishes
Dmitry