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Fri, 22 May 2026 04:30:58 -0700 (PDT) X-Received: by 2002:a05:620a:4494:b0:912:38a1:1273 with SMTP id af79cd13be357-914b48c0d3cmr316904685a.1.1779449457566; Fri, 22 May 2026 04:30:57 -0700 (PDT) Received: from [192.168.119.254] ([178.235.128.140]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-bddc68e0ad1sm43764466b.60.2026.05.22.04.30.55 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 22 May 2026 04:30:56 -0700 (PDT) Message-ID: Date: Fri, 22 May 2026 13:30:54 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 03/10] drm/msm/dp: Read DPCD and sink count in bridge detect() 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-v5-3-0c8450737d64@oss.qualcomm.com> Content-Language: en-US From: Konrad Dybcio In-Reply-To: <20260314-hpd-refactor-v5-3-0c8450737d64@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Authority-Analysis: v=2.4 cv=DKm/JSNb c=1 sm=1 tr=0 ts=6a103e73 cx=c_pps a=hnmNkyzTK/kJ09Xio7VxxA==:117 a=PRfkaYvzSr8QmIIGAkY2Sg==:17 a=IkcTkHD0fZMA:10 a=NGcC8JguVDcA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=eoimf2acIAo5FJnRuUoq:22 a=pGLkceISAAAA:8 a=EUspDBNiAAAA:8 a=0nMKL6qGrdLAchHWSpcA:9 a=QEXdDO2ut3YA:10 a=PEH46H7Ffwr30OY-TuGO:22 X-Proofpoint-GUID: ck0kC-R2of-ThmU86QZmniMEyozwGjcp X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTIyMDExNCBTYWx0ZWRfXywkPMe1uXFPL csoZEEF6VnUfdUtupWCBinzOFcRc+ZMQoGXxeyZUcrhlPx9HBk/IpRfGSYLTJDA0A5sv0i+2wqf Vzd87xfBMqcoaEw09kS9zcDqMAQMjxqapC+sUG83GEq0UM30EcOe9EEafkJUsBv66afLom2Wm8y 1PbgIVTT5BBsMIgTuRZk0WQ66VSKTe0KC/G/nqwHziX6sDPL52AZElqiOOmdge4fKFlIoGqK0OW OEvXX4brgN6Y0eOtFQRPU5DuKbFWJ3aVZoCvlnB2oe5KbpZmV6SHvGfRFhz08fimEfM5mhq2OLY BJertZORpI/0RXpdtPZrrSNFzssIhYoOCiBcSnFTWbQ/oyXmeJLqvHSrEKu6TsADoUsY4ghUIyl JTMvk3v0FtHvIvfDNVne09V3ziJ/TQPJeiRQza/EAzQOVe2QR+9wnHLFSJtuDlceKCQaP7Yc1uI wtyQc/I/Yn9p0q7VPfg== X-Proofpoint-ORIG-GUID: ck0kC-R2of-ThmU86QZmniMEyozwGjcp X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-05-22_02,2026-05-18_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 spamscore=0 phishscore=0 suspectscore=0 priorityscore=1501 clxscore=1015 impostorscore=0 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605220114 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 3/14/26 2:09 AM, Dmitry Baryshkov wrote: > From: Jessica Zhang > > Instead of relying on the link_ready flag to specify if DP is connected, > read the DPCD bits and get the sink count to accurately detect if DP is > connected. > > Signed-off-by: Jessica Zhang > Signed-off-by: Dmitry Baryshkov > --- There's still some trailing style/documentation feedback here from v3 Konrad