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Fri, 22 May 2026 04:49:53 -0700 (PDT) X-Received: by 2002:a05:622a:8d02:b0:50b:2875:5782 with SMTP id d75a77b69052e-516d43a2865mr28082941cf.6.1779450592979; Fri, 22 May 2026 04:49:52 -0700 (PDT) Received: from [192.168.119.254] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bddc5eca616sm46577566b.30.2026.05.22.04.49.51 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 May 2026 04:49:52 -0700 (PDT) Message-ID: <93327e80-c4fa-464c-90d2-26a7b08b2ea9@oss.qualcomm.com> Date: Fri, 22 May 2026 13:49:50 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 10/10] drm/msm/dp: clear EDID on display unplug To: Dmitry Baryshkov , Rob Clark , Dmitry Baryshkov , Abhinav Kumar , Jessica Zhang , Sean Paul , Marijn Suijten , David Airlie , Simona Vetter , Kuogee Hsieh , Yongxing Mou Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <20260314-hpd-refactor-v5-0-0c8450737d64@oss.qualcomm.com> <20260314-hpd-refactor-v5-10-0c8450737d64@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260314-hpd-refactor-v5-10-0c8450737d64@oss.qualcomm.com> Content-Type: text/plain; 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Set connector's EDID to NULL on > unplug to clear the list of modes. > > Signed-off-by: Dmitry Baryshkov > --- > drivers/gpu/drm/msm/dp/dp_display.c | 4 ++++ > drivers/gpu/drm/msm/dp/dp_panel.c | 8 ++++++++ > drivers/gpu/drm/msm/dp/dp_panel.h | 2 ++ > 3 files changed, 14 insertions(+) > > diff --git a/drivers/gpu/drm/msm/dp/dp_display.c b/drivers/gpu/drm/msm/dp/dp_display.c > index 0a38957ea901..5c6a24ec140d 100644 > --- a/drivers/gpu/drm/msm/dp/dp_display.c > +++ b/drivers/gpu/drm/msm/dp/dp_display.c > @@ -447,6 +447,10 @@ static int msm_dp_hpd_unplug_handle(struct msm_dp_display_private *dp) > return 0; > } > > + /* Don't forget modes for eDP */ > + if (!dp->msm_dp_display.is_edp) > + msm_dp_panel_unplugged(dp->panel, dp->msm_dp_display.connector); Is there a change some ""funny"" panels decide to output a new EDID blob after a "proper"/custom reset sequence (e.g. to remove limitations presented to the DPTX at the UEFI display init stage?) Konrad