linux-kernel - [PATCH 0/2] drm/msm: fix mismatch between power and frequency

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Message-Id: <20260109083808.1047-1-yuanjie.yang@oss.qualcomm.com>
Date: Fri,  9 Jan 2026 16:38:06 +0800
From: yuanjie yang <yuanjie.yang@....qualcomm.com>
To: robin.clark@....qualcomm.com, lumag@...nel.org, abhinav.kumar@...ux.dev,
        jesszhan0024@...il.com, sean@...rly.run, marijn.suijten@...ainline.org,
        airlied@...il.com, simona@...ll.ch, krzysztof.kozlowski@...aro.org,
        konrad.dybcio@....qualcomm.com
Cc: linux-arm-msm@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        freedreno@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        tingwei.zhang@....qualcomm.com, aiqun.yu@....qualcomm.com,
        yongxing.mou@....qualcomm.com
Subject: [PATCH 0/2] drm/msm: fix mismatch between power and frequency

From: Yuanjie Yang <yuanjie.yang@....qualcomm.com>

During DPU runtime suspend, calling dev_pm_opp_set_rate(dev, 0) drops
the MMCX rail to MIN_SVS while the core clock frequency remains at its
original (highest) rate. When runtime resume re-enables the clock, this
may result in a mismatch between the rail voltage and the clock rate.

Signed-off-by: Yuanjie Yang <yuanjie.yang@....qualcomm.com>
---
Yuanjie Yang (2):
  drm/msm/dpu: fix mismatch between power and frequency
  drm/msm/dpu: use max_freq replace max_core_clk_rate

 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.c | 22 ++++++++++++++--------
 drivers/gpu/drm/msm/disp/dpu1/dpu_kms.h |  3 +++
 2 files changed, 17 insertions(+), 8 deletions(-)

-- 
2.34.1