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 <[email protected]>
Reviewed-by: Wolfram Sang <[email protected]>
Reviewed-by: Kieran Bingham <[email protected]>
Signed-off-by: Sakari Ailus <[email protected]>
Signed-off-by: Hans Verkuil <[email protected]>

Author: bijudas

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;