diff --git a/plat/rockchip/px30/px30_def.h b/plat/rockchip/px30/px30_def.h
index 9b8ccfca63cef3cd7af51dcb68ecdd801ab2ef08..283b6064124802db3f8dcfb3ce4e7335d495cb95 100644
--- a/plat/rockchip/px30/px30_def.h
+++ b/plat/rockchip/px30/px30_def.h
@@ -54,6 +54,9 @@
 #define UART2_BASE		0xff160000
 #define UART2_SIZE		SIZE_K(64)
 
+#define UART3_BASE		0xff168000
+#define UART3_SIZE		SIZE_K(64)
+
 #define UART5_BASE		0xff178000
 #define UART5_SIZE		SIZE_K(64)