drivers: media: imx296: Add standby delay during probe

naushir · pelwell · commit 5fb3b300557d · 2023-07-28T13:36:00.000+01:00
Add a 2-5ms delay when coming out of standby and before reading the
sensor info register durning probe, as instructed by the datasheet. This
standby delay is already present when the sensor starts streaming.

Signed-off-by: Naushir Patuck &lt;naush@raspberrypi.com&gt;
diff --git a/drivers/media/i2c/imx296.c b/drivers/media/i2c/imx296.c
@@ -1022,6 +1022,8 @@ static int imx296_identify_model(struct imx296 *sensor)
 		return ret;
 	}
 
+	usleep_range(2000, 5000);
+
 	ret = imx296_read(sensor, IMX296_SENSOR_INFO);
 	if (ret < 0) {
 		dev_err(sensor->dev, "failed to read sensor information (%d)\n",

Original file line number	Diff line number	Diff line change
`@@ -1022,6 +1022,8 @@ static int imx296_identify_model(struct imx296 *sensor)`
`1022`	`1022`	`return ret;`
`1023`	`1023`	`}`
`1024`	`1024`
	`1025`	`+ usleep_range(2000, 5000);`
	`1026`	`+`
`1025`	`1027`	`ret = imx296_read(sensor, IMX296_SENSOR_INFO);`
`1026`	`1028`	`if (ret < 0) {`
`1027`	`1029`	`dev_err(sensor->dev, "failed to read sensor information (%d)\n",`