V4L2_PIX_FMT_Y4
.fourcc = V4L2_PIX_FMT_Y4,
case V4L2_PIX_FMT_Y4: return BV_PXP_PS_CTRL_FORMAT__Y4;
case V4L2_PIX_FMT_Y4: return BV_PXP_OUT_CTRL_FORMAT__Y4;
case V4L2_PIX_FMT_Y4:
case V4L2_PIX_FMT_Y4:
case V4L2_PIX_FMT_Y4: descr = "4-bit Greyscale"; break;