diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index 651b326d6aff..de4ee7c36632 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -19,6 +19,7 @@ struct drm_dsc_picture_parameter_set;
 #define MIPI_DSI_MSG_REQ_ACK	BIT(0)
 /* use Low Power Mode to transmit message */
 #define MIPI_DSI_MSG_USE_LPM	BIT(1)
+/* Stack all commands until lastcommand bit and trigger all in one go */
 #define MIPI_DSI_MSG_LASTCOMMAND BIT(3)
 
 /**