diff --git a/include/uapi/linux/rk-camera-module.h b/include/uapi/linux/rk-camera-module.h
index bb4b7eb2c018..9d7bf8571462 100644
--- a/include/uapi/linux/rk-camera-module.h
+++ b/include/uapi/linux/rk-camera-module.h
@@ -38,6 +38,8 @@
 #define RKMODULE_EXTERNAL_MASTER_MODE	"external_master"
 #define RKMODULE_SLAVE_MODE		"slave"
 
+#define RKMODULE_CAMERA_STANDBY_HW	"rockchip,camera-module-stb"
+
 /* BT.656 & BT.1120 multi channel
  * On which channels it can send video data
  * related with struct rkmodule_bt656_mbus_info