diff --git a/arch/arm/plat-rk/Kconfig b/arch/arm/plat-rk/Kconfig
index 3624aa91109f..33bbb511ffcd 100755
--- a/arch/arm/plat-rk/Kconfig
+++ b/arch/arm/plat-rk/Kconfig
@@ -165,8 +165,7 @@ config RK_DEBUG_UART
 
 config RK_USB_UART
 	bool "Support USB UART Bypass Function"
-	depends on ARCH_RK2928 && (RK_DEBUG_UART = 2)
-	default n
+	depends on (ARCH_RK2928 || ARCH_RK3188) && (RK_DEBUG_UART = 2)
 
 config RK_CONSOLE_THREAD
 	bool "Console write by thread"