diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 941f57f311aa2221bea207958225e4e1e894a358..8250062eb8a515b6c8ebbf717730f6131c6d4cbc 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -224,6 +224,10 @@ struct drm_display_info {
 #define DRM_BUS_FLAG_PIXDATA_POSEDGE	(1<<2)
 /* drive data on neg. edge */
 #define DRM_BUS_FLAG_PIXDATA_NEGEDGE	(1<<3)
+/* data is transmitted MSB to LSB on the bus */
+#define DRM_BUS_FLAG_DATA_MSB_TO_LSB	(1<<4)
+/* data is transmitted LSB to MSB on the bus */
+#define DRM_BUS_FLAG_DATA_LSB_TO_MSB	(1<<5)
 
 	/**
 	 * @bus_flags: Additional information (like pixel signal polarity) for