From 25a3c0c7d0221465da5d89f9b6551a26ac12f9fd Mon Sep 17 00:00:00 2001 From: Biju Das Date: Thu, 15 Feb 2024 14:43:33 +0000 Subject: media: i2c: ov5645: Remove software reset entry from ov5645_global_init_setting The SYSTEM_CTRL0 register in ov5645 is almost similar to ov5640. But the hard reset control is mandatory for the ov5645 device, so there is no need for soft reset in the driver. Add a 1msec delay for the software power up (OV5645_SYSTEM_CTRL0_START) register in ov5645_global_init_setting. Without this delay sometimes the image is not captured at all when the i2c frequency is 400kHz. The changes are fixing both the greenish issue and image capture at 400kHz i2c frequency on Renesas RZ/G2L SMARC EVK platforms. Signed-off-by: Biju Das Reviewed-by: Wolfram Sang Reviewed-by: Kieran Bingham Signed-off-by: Sakari Ailus Signed-off-by: Hans Verkuil --- drivers/media/i2c/ov5645.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'drivers/media') diff --git a/drivers/media/i2c/ov5645.c b/drivers/media/i2c/ov5645.c index a26ac11c989d..df86b951b9f3 100644 --- a/drivers/media/i2c/ov5645.c +++ b/drivers/media/i2c/ov5645.c @@ -118,7 +118,6 @@ static inline struct ov5645 *to_ov5645(struct v4l2_subdev *sd) static const struct reg_value ov5645_global_init_setting[] = { { 0x3103, 0x11 }, - { 0x3008, 0x82 }, { 0x3008, 0x42 }, { 0x3103, 0x03 }, { 0x3503, 0x07 }, @@ -627,6 +626,10 @@ static int ov5645_set_register_array(struct ov5645 *ov5645, ret = ov5645_write_reg(ov5645, settings->reg, settings->val); if (ret < 0) return ret; + + if (settings->reg == OV5645_SYSTEM_CTRL0 && + settings->val == OV5645_SYSTEM_CTRL0_START) + usleep_range(1000, 2000); } return 0; -- cgit v1.2.3-58-ga151