diff --git a/arch/arm/configs/shmobile_defconfig b/arch/arm/configs/shmobile_defconfig
index 452aef74cc5c..751d939fcb76 100644
--- a/arch/arm/configs/shmobile_defconfig
+++ b/arch/arm/configs/shmobile_defconfig
@@ -136,6 +136,7 @@ CONFIG_VIDEO_ADV7604_CEC=y
 CONFIG_VIDEO_ML86V7667=y
 CONFIG_DRM=y
 CONFIG_DRM_RCAR_DU=y
+# CONFIG_DRM_RCAR_USE_MIPI_DSI is not set
 CONFIG_DRM_PANEL_SIMPLE=y
 CONFIG_DRM_PANEL_EDP=y
 CONFIG_DRM_DISPLAY_CONNECTOR=y