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[2001:14ba:a073:af00:264b:feff:fe8b:be8a]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5aa7b8880basm3573760e87.0.2026.06.07.23.49.40 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 07 Jun 2026 23:49:40 -0700 (PDT) From: Dmitry Baryshkov To: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Tomi Valkeinen , Boris Brezillon , Sam Ravnborg , Sebastian Reichel , Yongxing Mou , Dmitry Baryshkov Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org In-Reply-To: <20260314-dp-connector-hpd-v1-0-786044cedc17@oss.qualcomm.com> References: <20260314-dp-connector-hpd-v1-0-786044cedc17@oss.qualcomm.com> Subject: Re: [PATCH 0/2] drm/bridge: display-connector: detect DP state if cable is plugged on boot Message-Id: <178090138005.36483.18093415635803962846.b4-ty@b4> Date: Mon, 08 Jun 2026 09:49:40 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-Mailer: b4 0.15.2 X-Proofpoint-ORIG-GUID: T4f0T5qKoC0B6Dr95cTqXaYK9icBvkbF X-Authority-Analysis: v=2.4 cv=deGwG3Xe c=1 sm=1 tr=0 ts=6a266607 cx=c_pps a=5HAIKLe1ejAbszaTRHs9Ug==:117 a=xqWC_Br6kY4A:10 a=IkcTkHD0fZMA:10 a=FelO9ux0wxsA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=YMgV9FUhrdKAYTUUvYB2:22 a=U5Edx-QnV-FVL3PtqvEA:9 a=QEXdDO2ut3YA:10 a=gYDTvv6II1OnSo0itH1n:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjA4MDA2MSBTYWx0ZWRfX7MOsU49DSQRh Spnaqk8FztXEZO97aJRkBGJmRknrJNimVcffQpdoOjN8c/jjm9bFOUZrsG8BV30KYHIGRXCSL3Z +SEzbmBEKXPPIEWpQ6IMyLM9JJNIsd6wofH9jDjWzTY7ZhEjyCWfbJ+UPGCpbEZhHO+LisbtNxT 06v6HD8GjhKh87bfNlyCOpbtC495WjW8nzG7cbZv+fuIuua/MV2SpjZk5b6ge8nEyGD+nzvWCds EM1N37IgBtRw+JK8wovT3sFXOHj1L6hDYr+APWYxQlQxfO9yjp1OttbqIdQq+5CNcwfvg1RyShY nzXH9BwDkck+s4raj1PhGWkmxuBbWu0Lz04dvZF83q1RoLQaCUjvYoc9+63zISXdmOdLu+iow3g aYcFbAKqOh4z5cAy/TRj/Pev2/0keeHWVAaJ0h5b38gWTNH4Ruj+ksy6gtfGo4JFkY7awybhtwx eVdm4R76V5fBrew3F4g== X-Proofpoint-GUID: T4f0T5qKoC0B6Dr95cTqXaYK9icBvkbF X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-08_02,2026-06-05_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 clxscore=1015 phishscore=0 impostorscore=0 priorityscore=1501 bulkscore=0 adultscore=0 malwarescore=0 suspectscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606080061 On Sat, 14 Mar 2026 02:43:10 +0200, Dmitry Baryshkov wrote: > Unlike the USB-C AltMode handling and unlike the DP controller handling > the HPD on its own, if the display-connector is being used to handle the > HPD pin, DP controller might not be able to get either the HPD > notification nor detect the cable state if the cable is plugged in > before the system has booted. > > Make the display-connector send the HPD notifications during system > startup for DisplayPort connectors. > > [...] Applied to drm-misc-next, thanks! [1/2] drm/bridge: display-connector: don't autoenable HPD IRQ commit: 8e9c475060bff87077cfa3bd42011edcb7fb3b0d [2/2] drm/bridge: display-connector: trigger initial HPD event for DP commit: 60dc0946bbad3eef8bc66a5a8b09b98dbc6e09c0 Best regards, -- With best wishes Dmitry