media: ov5647: Add support for PWDN GPIO.
Add support for an optional GPIO connected to PWDN on the sensor. This allows the use of hardware standby mode where internal device clock and circuit activities are halted. Please note that power is off when PWDN is high. Signed-off-by:Dave Stevenson <dave.stevenson@raspberrypi.org> Signed-off-by:
Roman Kovalivskyi <roman.kovalivskyi@globallogic.com> Signed-off-by:
Jacopo Mondi <jacopo@jmondi.org> Signed-off-by:
Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by:
Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
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