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| author | Hans de Goede <[email protected]> | 2024-05-06 13:24:38 +0000 |
|---|---|---|
| committer | Hans Verkuil <[email protected]> | 2024-05-10 09:20:02 +0000 |
| commit | 6983352784a7b87a9c39dbbfaa33733fa1ccb0a5 (patch) | |
| tree | 48420428174ad120dfe22acecec9706c2236493c /rust/helpers.c | |
| parent | media: intel/ipu6: Don't print user-triggerable errors to kernel log (diff) | |
| download | kernel-6983352784a7b87a9c39dbbfaa33733fa1ccb0a5.tar.gz kernel-6983352784a7b87a9c39dbbfaa33733fa1ccb0a5.zip | |
media: ov2740: Ensure proper reset sequence on probe()
Before this commit on probe() the driver would do:
reset=1 // from probe() calling gpiod_get(GPIOD_OUT_HIGH)
reset=0 // from resume()
msleep(20) // from resume()
So if reset was 0 before getting the GPIO the reset line would only be
driven high for a very short time and sometimes there would be errors
reading the id register afterwards.
Add a msleep(20) after getting the reset line to ensure the sensor is
properly reset:
reset=1 // from probe() calling gpiod_get(GPIOD_OUT_HIGH)
msleep(20) // from probe()
reset=0 // from resume()
msleep(20) // from resume()
Signed-off-by: Hans de Goede <[email protected]>
Tested-by: Stanislaw Gruszka <[email protected]>
Signed-off-by: Sakari Ailus <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>
Diffstat (limited to 'rust/helpers.c')
0 files changed, 0 insertions, 0 deletions