linux-kernel - [PATCH 0/4] drm/msm: UBWC-related fixes

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Message-Id: <20260117-msm-ubwc-fixes-v1-0-d5c65ea552c7@oss.qualcomm.com>
Date: Sat, 17 Jan 2026 08:35:53 +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>,
        Konrad Dybcio <konrad.dybcio@....qualcomm.com>,
        Konrad Dybcio <konradybcio@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        Stephan Gerhold <stephan.gerhold@...aro.org>
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH 0/4] drm/msm: UBWC-related fixes

Fix several bugs, possibly causing image corruption when using UBWC with
the drm/msm driver.

Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@....qualcomm.com>
---
Dmitry Baryshkov (4):
      drm/msm/mdss: correct HBB programmed on UBWC 5.x and 6.x devices
      drm/msm/dpu: offset HBB values written to DPU by -13
      drm/msm/dpu: program correct register for UBWC config on DPU 8.x+
      drm/msm/dpu: fix SSPP_UBWC_STATIC_CTRL programming on UBWC 5.x+

 drivers/gpu/drm/msm/disp/dpu1/dpu_hw_sspp.c | 55 +++++++++++++++++------------
 drivers/gpu/drm/msm/msm_mdss.c              |  2 +-
 2 files changed, 33 insertions(+), 24 deletions(-)
---
base-commit: b775e489bec70895b7ef6b66927886bbac79598f
change-id: 20260117-msm-ubwc-fixes-350f67d860d5

Best regards,
-- 
With best wishes
Dmitry