media: ov13858: Avoid possible null first frame

Previously, the sensor, with default settings, was outputting SOF without
data. This results in frame sync error on the receiver side.

Now, configure the sensor to output SOF with MIPI data for all frames. This
avoids possible null first frame on the bus.

Signed-off-by: Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Signed-off-by: Tianshu Qiu <tian.shu.qiu@intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

drivers/media/i2c/ov13858.c

@@ -194,6 +194,7 @@ static const struct ov13858_reg mode_4224x3136_regs[] = {
 	{0x3624, 0x1c},
 	{0x3640, 0x10},
 	{0x3641, 0x70},
+	{0x3660, 0x04},
 	{0x3661, 0x80},
 	{0x3662, 0x12},
 	{0x3664, 0x73},
@@ -384,6 +385,7 @@ static const struct ov13858_reg mode_2112x1568_regs[] = {
 	{0x3624, 0x1c},
 	{0x3640, 0x10},
 	{0x3641, 0x70},
+	{0x3660, 0x04},
 	{0x3661, 0x80},
 	{0x3662, 0x10},
 	{0x3664, 0x73},
@@ -574,6 +576,7 @@ static const struct ov13858_reg mode_2112x1188_regs[] = {
 	{0x3624, 0x1c},
 	{0x3640, 0x10},
 	{0x3641, 0x70},
+	{0x3660, 0x04},
 	{0x3661, 0x80},
 	{0x3662, 0x10},
 	{0x3664, 0x73},
@@ -764,6 +767,7 @@ static const struct ov13858_reg mode_1056x784_regs[] = {
 	{0x3624, 0x1c},
 	{0x3640, 0x10},
 	{0x3641, 0x70},
+	{0x3660, 0x04},
 	{0x3661, 0x80},
 	{0x3662, 0x08},
 	{0x3664, 0x73},