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media: i2c: ov7251: Introduce 1 ms delay between regulators and en GPIO

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commit 3d391292cdd53984ec1b9a1f6182a62a62751e03 upstream.

Lift the xshutdown (enable) GPIO 1 ms after enabling the regulators, as
required by the sensor's power-up sequence.

Fixes: d30bb512da ("media: Add a driver for the ov7251 camera sensor")
Cc: stable@vger.kernel.org
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Reviewed-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sakari Ailus 2025-01-17 16:04:02 +02:00 • committed by Greg Kroah-Hartman
commit 4397512185
1 changed files with 2 additions and 0 deletions
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2
drivers/media/i2c/ov7251.c
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@ -748,6 +748,8 @@ static int ov7251_set_power_on(struct ov7251 *ov7251)
return ret;
}
usleep_range(1000, 1100);
gpiod_set_value_cansleep(ov7251->enable_gpio, 1);
/* wait at least 65536 external clock cycles */