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This avoids a mismatch where the first power-up (when the reset GPIO defaults deasserted) differs from subsequent cycles. Signed-off-by: Wenmeng Liu --- drivers/media/i2c/imx412.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c index b3826f80354703b17b416dc233854da3f5736e38..ebc2fb706442365f541540bf4ce= 9d307d42e0061 100644 --- a/drivers/media/i2c/imx412.c +++ b/drivers/media/i2c/imx412.c @@ -1022,6 +1022,8 @@ static int imx412_power_on(struct device *dev) struct imx412 *imx412 =3D to_imx412(sd); int ret; =20 + gpiod_set_value_cansleep(imx412->reset_gpio, 1); + ret =3D regulator_bulk_enable(ARRAY_SIZE(imx412_supply_names), imx412->supplies); if (ret < 0) { @@ -1029,20 +1031,19 @@ static int imx412_power_on(struct device *dev) return ret; } =20 - gpiod_set_value_cansleep(imx412->reset_gpio, 0); - ret =3D clk_prepare_enable(imx412->inclk); if (ret) { dev_err(imx412->dev, "fail to enable inclk\n"); goto error_reset; } =20 + gpiod_set_value_cansleep(imx412->reset_gpio, 0); + usleep_range(1000, 1200); =20 return 0; =20 error_reset: - gpiod_set_value_cansleep(imx412->reset_gpio, 1); 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[129.46.232.65]) by smtp.gmail.com with ESMTPSA id 6a1803df08f44-8942e6d8640sm77208166d6.50.2026.01.19.02.15.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 19 Jan 2026 02:15:11 -0800 (PST) From: Wenmeng Liu Date: Mon, 19 Jan 2026 18:15:02 +0800 Subject: [PATCH v3 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: <20260119-imx412-v3-2-8b46929af773@oss.qualcomm.com> References: <20260119-imx412-v3-0-8b46929af773@oss.qualcomm.com> In-Reply-To: <20260119-imx412-v3-0-8b46929af773@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=1768817703; l=789; i=wenmeng.liu@oss.qualcomm.com; s=20250925; h=from:subject:message-id; bh=y+WcPq60gpKxYT213F0gMdG4bUglYphHIIxR+4d15oY=; b=WWspEKYqgtiCH+aFemziMB4S2+AybXVWrdB7LpnT2DnC7KR5K2CnvNLjSUErZSZeMFlWqAdza PHUFvbEijtkBwLZCvpJ952QsrHdNnK8WWXedDw0Se848UBr1SzUWSdU X-Developer-Key: i=wenmeng.liu@oss.qualcomm.com; a=ed25519; pk=fQJjf9C3jGDjE1zj2kO3NQLTbQEaZObVcXAzx5WLPX0= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTE5MDA4NCBTYWx0ZWRfX+NYQPlpACH4/ S53T7A/MiCF+zMz/qFG7hVwtIP1JOXwBG+EEqiH43908ulfwGMtHOpdB7nrxaFdZAK1NDgMbVBc mGKGlUOO3aa4LaiR56PiF9Rq+aCwkEvPLSJxOpy0cs/gccZH3bZGo6LGGg2iT+UhNkz1lbWoLQQ 4xWy2hUhvfbJLMaAp2vSTmkJrEO0gYdY4+2ZaCRmZKRQ0R8BbAlBee6L5lFf+7ZFy7oJ12fC0NN s/2fGMtoAJ4TaVq5USNYZdheXFTGGfToMqiZ4kj2MzNAAmahcjbcYQbV7vD/tKhKS2VKcQOKcPZ dWMpTm1YI32oicooBaarSN1s16eT6FijKfxF/Zq7o6hfU96j+lgMUtAqqFJ2BfZWo3btAO8evO+ w/L7VDU8Wx3dVn0eEseGLEVFR+CDwPVteDxEhIWEWWgZG05FFQJ5R4TNK21c+ACm6C5avBWY1t4 A8gVQUA44OMMY7Hzeqw== X-Proofpoint-GUID: zriNCsirS9-6eL3f0Onkxa0dgPGvEKD7 X-Authority-Analysis: v=2.4 cv=GJ0F0+NK c=1 sm=1 tr=0 ts=696e0431 cx=c_pps a=EVbN6Ke/fEF3bsl7X48z0g==:117 a=C3Dk8TwHQYyIj7nOf9RCJw==:17 a=IkcTkHD0fZMA:10 a=vUbySO9Y5rIA:10 a=s4-Qcg_JpJYA:10 a=VkNPw1HP01LnGYTKEx00:22 a=EUspDBNiAAAA:8 a=r8GCDS4tHU10FJMKL5oA:9 a=3ZKOabzyN94A:10 a=QEXdDO2ut3YA:10 a=a_PwQJl-kcHnX1M80qC6:22 X-Proofpoint-ORIG-GUID: zriNCsirS9-6eL3f0Onkxa0dgPGvEKD7 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2026-01-19_02,2026-01-19_01,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 spamscore=0 lowpriorityscore=0 clxscore=1015 phishscore=0 bulkscore=0 adultscore=0 impostorscore=0 suspectscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2601150000 definitions=main-2601190084 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 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c index ebc2fb706442365f541540bf4ce9d307d42e0061..23a418edfeac067fc347e18c868= 396e20ece6b12 100644 --- a/drivers/media/i2c/imx412.c +++ b/drivers/media/i2c/imx412.c @@ -1039,7 +1039,7 @@ static int imx412_power_on(struct device *dev) =20 gpiod_set_value_cansleep(imx412->reset_gpio, 0); =20 - usleep_range(1000, 1200); + usleep_range(10000, 12000); =20 return 0; =20 --=20 2.34.1