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

Wenmeng Liu posted 2 patches 2 weeks, 5 days ago
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[PATCH v4 1/2] media: i2c: imx412: fix sensor power-on timing
Posted by Wenmeng Liu 2 weeks, 5 days ago
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@oss.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