linux-kernel - [PATCH v4 1/2] media: i2c: imx412: fix sensor power-on timing

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Message-Id: <20260121-imx412-v4-1-f6bdf83f116b@oss.qualcomm.com>
Date: Wed, 21 Jan 2026 16:06:27 +0800
From: Wenmeng Liu <wenmeng.liu@....qualcomm.com>
To: Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Mauro Carvalho Chehab <mchehab@...nel.org>
Cc: linux-media@...r.kernel.org, linux-kernel@...r.kernel.org,
        Wenmeng Liu <wenmeng.liu@....qualcomm.com>
Subject: [PATCH v4 1/2] media: i2c: imx412: fix sensor power-on timing

Assert the reset GPIO before first power up. This avoids a mismatch where
the first power up (when the reset GPIO defaults deasserted) differs from
subsequent cycles.

Signed-off-by: Wenmeng Liu <wenmeng.liu@....qualcomm.com>
---
 drivers/media/i2c/imx412.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/media/i2c/imx412.c b/drivers/media/i2c/imx412.c
index b3826f80354703b17b416dc233854da3f5736e38..5cb55deb125edb218779b076429f9fff93e11a08 100644
--- a/drivers/media/i2c/imx412.c
+++ b/drivers/media/i2c/imx412.c
@@ -1188,6 +1188,8 @@ static int imx412_probe(struct i2c_client *client)
 
 	mutex_init(&imx412->mutex);
 
+	gpiod_set_value_cansleep(imx412->reset_gpio, 1);
+
 	ret = imx412_power_on(imx412->dev);
 	if (ret) {
 		dev_err(imx412->dev, "failed to power-on the sensor\n");

-- 
2.34.1