diff --git a/arch/arm/configs/rockchip_defconfig b/arch/arm/configs/rockchip_defconfig
index 9365de8513a5..afea13eb0eb8 100755
--- a/arch/arm/configs/rockchip_defconfig
+++ b/arch/arm/configs/rockchip_defconfig
@@ -34,6 +34,7 @@ CONFIG_MODULES=y
 CONFIG_MODULE_UNLOAD=y
 CONFIG_PARTITION_ADVANCED=y
 CONFIG_ARCH_ROCKCHIP=y
+CONFIG_RK_USB_UART=y
 CONFIG_BLOCK_RKNAND=y
 # CONFIG_SWP_EMULATE is not set
 CONFIG_ARM_ERRATA_720789=y