diff options
| author | Loic Poulain <loic.poulain@linaro.org> | 2019-01-30 11:48:07 -0500 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+samsung@kernel.org> | 2019-02-18 11:38:58 -0500 |
| commit | 1d4c41f3d887bcd66e82cb2fda124533dad8808a (patch) | |
| tree | c2079cde6f509a33d2f5f09d550d6c00b68970da /drivers/media/i2c | |
| parent | 6530a5eb99954699743885e800d88be88752d1ab (diff) | |
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: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org>
Diffstat (limited to 'drivers/media/i2c')
| -rw-r--r-- | drivers/media/i2c/ov5640.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/media/i2c/ov5640.c b/drivers/media/i2c/ov5640.c index 2387c29b7fb0..5278c8723fdd 100644 --- a/drivers/media/i2c/ov5640.c +++ b/drivers/media/i2c/ov5640.c @@ -1939,7 +1939,7 @@ static void ov5640_reset(struct ov5640_dev *sensor) usleep_range(1000, 2000); 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) |