diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h
index 5d56ca99c1c5..9d9d5e009163 100644
--- a/drivers/gpu/drm/msm/msm_drv.h
+++ b/drivers/gpu/drm/msm/msm_drv.h
@@ -65,6 +65,12 @@ enum msm_dp_controller {
 	MSM_DP_CONTROLLER_COUNT,
 };
 
+enum msm_dsi_controller {
+	MSM_DSI_CONTROLLER_0,
+	MSM_DSI_CONTROLLER_1,
+	MSM_DSI_CONTROLLER_COUNT,
+};
+
 #define MSM_GPU_MAX_RINGS 4
 #define MAX_H_TILES_PER_DISPLAY 2
 
@@ -116,7 +122,7 @@ struct msm_drm_private {
 	struct hdmi *hdmi;
 
 	/* DSI is shared by mdp4 and mdp5 */
-	struct msm_dsi *dsi[2];
+	struct msm_dsi *dsi[MSM_DSI_CONTROLLER_COUNT];
 
 	struct msm_dp *dp[MSM_DP_CONTROLLER_COUNT];