[PATCH] media: i2c: OV5647: gate clock lane before stream on

[Jacob Chen]

According to datasheet, BIT5 in reg-0x4800 are used to
enable/disable clock lane gate.

It's wrong to make clock lane free running before
sensor stream on was called, while the mipi phy
are not initialized.

Signed-off-by: Jacob Chen <jacob-c...@iotwrt.com>
---
 drivers/media/i2c/ov5647.c | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/drivers/media/i2c/ov5647.c b/drivers/media/i2c/ov5647.c
index 95ce90f..d3e6fd0 100644
--- a/drivers/media/i2c/ov5647.c
+++ b/drivers/media/i2c/ov5647.c
@@ -253,6 +253,10 @@ static int ov5647_stream_on(struct v4l2_subdev *sd)
 {
        int ret;
 
+       ret = ov5647_write(sd, 0x4800, 0x04);
+       if (ret < 0)
+               return ret;
+
        ret = ov5647_write(sd, 0x4202, 0x00);
        if (ret < 0)
                return ret;
@@ -264,6 +268,10 @@ static int ov5647_stream_off(struct v4l2_subdev *sd)
 {
        int ret;
 
+       ret = ov5647_write(sd, 0x4800, 0x25);
+       if (ret < 0)
+               return ret;
+
        ret = ov5647_write(sd, 0x4202, 0x0f);
        if (ret < 0)
                return ret;
@@ -320,7 +328,7 @@ static int __sensor_init(struct v4l2_subdev *sd)
                        return ret;
        }
 
-       return ov5647_write(sd, 0x4800, 0x04);
+       return ov5647_stream_off(sd);
 }
 
 static int ov5647_sensor_power(struct v4l2_subdev *sd, int on)
-- 
2.7.4