diff --git a/target/linux/ramips/dts/GL-MT300N-V2.dts b/target/linux/ramips/dts/GL-MT300N-V2.dts
index 852b7b5..4eb0292 100644
--- a/target/linux/ramips/dts/GL-MT300N-V2.dts
+++ b/target/linux/ramips/dts/GL-MT300N-V2.dts
@@ -81,7 +81,7 @@
 &pinctrl {
 	state_default: pinctrl0 {
 		gpio {
-			ralink,group = "wdt", "gpio", "wled_an", "p0led_an", "p1led_an", "i2s";
+			ralink,group = "wdt", "gpio", "wled_an", "p0led_an", "p1led_an", "i2s", "uart1", "i2c";
 			ralink,function = "gpio";
 		};
 	};