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[v2,0/3] media: ov5640: Fix power up sequence delays

Message ID 20221219143056.4070-1-j-luthra@ti.com (mailing list archive)
Headers

Message

Jai Luthra Dec. 19, 2022, 2:30 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 v2:
- Rename ov5640_reset to ov5640_powerup_sequence to match datasheet
- Remove the check for reset_gpio so that appropriate delays are honored when 
using only the pwdn_gpio
- Remove redundant call to ov5640_power
- Add 5ms delay after SW PWUP used in ov5640_set_stream_dvp()

Jai Luthra (1):
  media: ov5640: Handle delays when no reset_gpio set

Nishanth Menon (2):
  media: ov5640: Honor RESETB to SMBUS time t4 in init_setting
  media: ov5640: Honor power on time in init_setting

 drivers/media/i2c/ov5640.c | 35 ++++++++++++++++++++++++-----------
 1 file changed, 24 insertions(+), 11 deletions(-)