Hi Hans and Laurent, I got fmt info from a video data source subdev, I thought there should be a helper function to convert these two format enums. However, v4l2_fill_pix_format didn't do this, why? Should I do this in bridge driver one by one? I think these codes are common use, I prefer adding them in v4l2_fill_pix_format. Thanks, Scott -- To unsubscribe from this list: send the line "unsubscribe linux-media" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html