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[129.46.232.65]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8949182443esm13111066d6.11.2026.01.23.01.20.04 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 23 Jan 2026 01:20:06 -0800 (PST) From: Wenmeng Liu Date: Fri, 23 Jan 2026 17:19:56 +0800 Subject: [PATCH v7 2/2] media: i2c: imx412: Extend the power-on waiting time 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: quoted-printable Message-Id: <20260123-imx412-v7-2-e58303f2b76b@oss.qualcomm.com> References: <20260123-imx412-v7-0-e58303f2b76b@oss.qualcomm.com> In-Reply-To: <20260123-imx412-v7-0-e58303f2b76b@oss.qualcomm.com> To: Sakari Ailus , Mauro Carvalho Chehab Cc: linux-media@vger.kernel.org, linux-kernel@vger.kernel.org, Wenmeng Liu X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1769159998; l=931; i=wenmeng.liu@oss.qualcomm.com; s=20250925; h=from:subject:message-id; bh=h/q/M+E5lrtZX/hw90ezY6z3iSB5h9ybxP4GcniLh4A=; b=GXfVUEEzc8E/PNqS3KTP9+sUgEMl7iPak5/yZrfgIcBm+Z9TnMnHAPl77/GFM2BHGbDI3FrZ0 +4w5jnfv9ukApV9zD1VG/j2V0MdxeXQenahiCuc4lBBGze0S+hLZHGn X-Developer-Key: i=wenmeng.liu@oss.qualcomm.com; a=ed25519; pk=fQJjf9C3jGDjE1zj2kO3NQLTbQEaZObVcXAzx5WLPX0= X-Authority-Analysis: v=2.4 cv=RMy+3oi+ c=1 sm=1 tr=0 ts=69733d47 cx=c_pps a=7E5Bxpl4vBhpaufnMqZlrw==:117 a=C3Dk8TwHQYyIj7nOf9RCJw==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=dXID522kZObDGRcwZQYA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=pJ04lnu7RYOZP9TFuWaZ:22 X-Proofpoint-ORIG-GUID: RyxbLU-AhQBtWFWgF2ICWF3YnprWbi70 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTIzMDA3MyBTYWx0ZWRfX1pPUDCj8zbt9 xL5iMFh2rPT7iygJyQbaXOMeCvwnZLM83oy45UQWDgFEYRpt/2mfTy4ovp/QZHZW0SMWG+sLomN MpsJ8hrvuEyq1r51A/iCL0OC7XGV2WezZ84NIvauZW/IPjPkXtu1rta/+YuzeqneEwlrm84G02A plYrl7GCQW56/vyducnhedP8gi6HvLYkDYb0se729ZytRGhX0jiKtKyudhjDpBcd/3gwE+1BQDL H4fcRH1H97T0xRS2XNUtdBOzK/VK2HueShxiqPv1BJ4cr9KCVd6TZ0bnpSH5oeiNigcEmIZtKks 0aGXCHUPHl/KuVSwu0HwKLhgBD36fCFVgbmcagKLfFnKOqOBsvPOTrKbLT5UXnAmbmUN9X5eXQW XObtgI7n1XqXhUhAXjQgTstHR/lxPVs5IAa5/V4Y+mjCjPEBUDSVT4VCJ3LCtyQbBL4L65ie/e2 /961sUZ2OqIqHX8xXjA== X-Proofpoint-GUID: RyxbLU-AhQBtWFWgF2ICWF3YnprWbi70 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.20,FMLib:17.12.100.49 definitions=2026-01-23_01,2026-01-22_02,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 malwarescore=0 priorityscore=1501 clxscore=1015 impostorscore=0 lowpriorityscore=0 suspectscore=0 bulkscore=0 adultscore=0 spamscore=0 phishscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601230073 The Arducam IMX577 module requires a longer reset time than the 1000=C2=B5s configured in the current driver. Increase the wait time after power-on to ensure proper initialization. Signed-off-by: Wenmeng Liu --- drivers/media/i2c/imx412.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c index aa63dfc349181bf9c180ffd566b0317d05b410c1..e25e0a9ff65c3554d1d1c8297d9= 45378c2c1f27b 100644 --- a/drivers/media/i2c/imx412.c +++ b/drivers/media/i2c/imx412.c @@ -1037,7 +1037,11 @@ static int imx412_power_on(struct device *dev) goto error_reset; } =20 - usleep_range(1000, 1200); + /* + * Certain Arducam IMX577 module variants require a longer reset settle + * time. Increasing the delay from 1ms to 10ms ensures reliable startup. + */ + usleep_range(10000, 12000); =20 return 0; =20 --=20 2.34.1