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[v4,0/2] media: ov5640: Fix power up sequence delays

Message ID 20230103122736.18479-1-j-luthra@ti.com (mailing list archive)
Headers

Message

Jai Luthra Jan. 3, 2023, 12:27 p.m. UTC 
  This series fixes the power-up sequence delays to support some 15-pin 
FFC compatible OV5640 modules.

Without appropriate delays after both gpio and register-based powerdown 
and reset the sensor SCCB was not very stable, and probe would sometimes 
fail at check_chip_id.

Changes in v4:
- Swap order of patches [1/3] and [2/3]
- Drop patch [3/3] as SW powerup does not have same timing constraints
- Move soft powerdown from the register table to powerup_sequence() 
  along with soft reset

v3: https://lore.kernel.org/all/20221227173634.5752-1-j-luthra@ti.com/

Jai Luthra (2):
  media: ov5640: Fix soft reset sequence and timings
  media: ov5640: Handle delays when no reset_gpio set

 drivers/media/i2c/ov5640.c | 55 +++++++++++++++++++++++++++-----------
 1 file changed, 39 insertions(+), 16 deletions(-)