Commit 1d4c41f3 authored by Loic Poulain's avatar Loic Poulain Committed by Mauro Carvalho Chehab

media: i2c: ov5640: Fix post-reset delay

According to the ov5640 specification (2.7 power up sequence), host can
access the sensor's registers 20ms after reset. Trying to access them
before leads to undefined behavior and result in sporadic initialization
errors.
Signed-off-by: default avatarLoic Poulain <loic.poulain@linaro.org>
Signed-off-by: default avatarSakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab+samsung@kernel.org>
parent 6530a5eb
...@@ -1939,7 +1939,7 @@ static void ov5640_reset(struct ov5640_dev *sensor) ...@@ -1939,7 +1939,7 @@ static void ov5640_reset(struct ov5640_dev *sensor)
usleep_range(1000, 2000); usleep_range(1000, 2000);
gpiod_set_value_cansleep(sensor->reset_gpio, 0); gpiod_set_value_cansleep(sensor->reset_gpio, 0);
usleep_range(5000, 10000); usleep_range(20000, 25000);
} }
static int ov5640_set_power_on(struct ov5640_dev *sensor) static int ov5640_set_power_on(struct ov5640_dev *sensor)
......
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