diff --git a/include/uapi/linux/media-bus-format.h b/include/uapi/linux/media-bus-format.h
index 096f891d4ca2..f16dff5b49cc 100644
--- a/include/uapi/linux/media-bus-format.h
+++ b/include/uapi/linux/media-bus-format.h
@@ -67,6 +67,7 @@
 #define MEDIA_BUS_FMT_BGR888_DUMMY_4X8		0x1020
 #define MEDIA_BUS_FMT_RGB101010_1X7X5_SPWG	0x1022
 #define MEDIA_BUS_FMT_RGB101010_1X7X5_JEIDA	0x1023
+#define MEDIA_BUS_FMT_RGB666_3X6		0x1100
 
 /* YUV (including grey) - next is	0x202e */
 #define MEDIA_BUS_FMT_Y8_1X8			0x2001