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Fri, 03 Jul 2026 05:33:59 -0700 (PDT) Received: from hu-mdsor-hyd.qualcomm.com ([202.46.22.19]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-30f31e7a2a8sm4556282eec.25.2026.07.03.05.33.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 03 Jul 2026 05:33:59 -0700 (PDT) Date: Fri, 3 Jul 2026 18:03:50 +0530 From: Mohit Dsor To: Dmitry Baryshkov Cc: Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Jonas Karlman , Jernej Skrabec , Luca Ceresoli , David Airlie , Simona Vetter , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Vinod Koul , dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, boss@oss.qualcomm.com, qc-display-maintainer@oss.qualcomm.com Subject: Re: [PATCH 2/4] drm/bridge: lontium-lt9611c: Increase MCU poll timeout to 200ms Message-ID: References: <20260611-lt9611-b4-send-v1-0-42abbcd3bb1e@oss.qualcomm.com> <20260611-lt9611-b4-send-v1-2-42abbcd3bb1e@oss.qualcomm.com> Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Proofpoint-GUID: n696UzZzeOPBOBcH2d7XSvXgq-1538mj X-Proofpoint-Spam-Info: AW1haW4tMjYwNzAzMDEyMyBTYWx0ZWRfX4jaSswKP+aXa /LBKBGMeFZ7SvWLv4EVBb71MsaO+zAdlGJzNcoSfFxpI8eQ6u0FMkufto4TIb/XXZa+RlNCNtmE lei7b4zJN2VOT6OhaLOCT7IZSvKsvoA= X-Authority-Analysis: v=2.4 cv=a6QAM0SF c=1 sm=1 tr=0 ts=6a47ac39 cx=c_pps a=vVfyC5vLCtgYJKYeQD43oA==:117 a=fChuTYTh2wq5r3m49p7fHw==:17 a=kj9zAlcOel0A:10 a=RAioF0-LDSMA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=u7WPNUs3qKkmUXheDGA7:22 a=Um2Pa8k9VHT-vaBCBUpS:22 a=EUspDBNiAAAA:8 a=wn4IccVi28QXfKnItucA:9 a=CjuIK1q_8ugA:10 a=rl5im9kqc5Lf4LNbBjHf:22 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNzAzMDEyMyBTYWx0ZWRfXxPU9KfON/cM2 vYSJv+lvsNLPPHV4ccllqgygmYXtTNeeORzh4+n94gqAoPVgHNb6YhGIk6WBhNVgh9qOdx/2NcD PUD4Vom82/seqiJG+1KKO1cgOFBth5QT+nqdMLLOf4rAgGlIK2scK44dDnCSaUqBy6q2or6bRry FNHtXmCrROMhSDBtmW7Sc//adiu/U+wV9n9QZeVzs6ZQz3Z/l6fS2/PbukI+Ah5YQwa4PLaozLf 8TCnQIgv6r1fivY1Y2tlnA84HtseWQCGzvWqH6iTBJ8epovyB8RxzqBUZPiVTxDfsbo9RZL4SFP 2FKdgXAHn6w4dnTh/ECH9XF7smRJWaXPSHdGtgK0A+nEcT/bbkBn6xA2MZD5p8ZBU9fKvHys+VO BoOlLwTrJc0RlXiOWheGojU01y88ZBKPq/EoSGfVo+DU0F7hijUtAFUYIYUl4MhHFT/AT98ZOK8 IPsFqGFwWt7xiUtooSg== X-Proofpoint-ORIG-GUID: n696UzZzeOPBOBcH2d7XSvXgq-1538mj 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=2026-07-03_02,2026-06-26_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 suspectscore=0 malwarescore=0 lowpriorityscore=0 adultscore=0 bulkscore=0 impostorscore=0 phishscore=0 spamscore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606150000 definitions=main-2607030123 On Fri, Jun 26, 2026 at 11:25:03PM +0300, Dmitry Baryshkov wrote: > On Thu, Jun 11, 2026 at 02:44:57AM +0530, Mohit Dsor wrote: > > The on-chip MCU may take longer than 100ms to respond on some hardware > > variants or slower I2C buses, causing spurious -ETIMEDOUT errors during > > normal operation. Double the poll timeout from 100ms to 200ms to improve > > reliability without changing the poll interval. > > > > Signed-off-by: Mohit Dsor > > Fixes, cc:stable. > We will add this fix as a part of base patch. > > --- > > drivers/gpu/drm/bridge/lontium-lt9611c.c | 4 ++-- > > 1 file changed, 2 insertions(+), 2 deletions(-) > > > > -- > With best wishes > Dmitry