diff --git a/target/linux/ramips/dts/MIR3G.dts b/target/linux/ramips/dts/MIR3G.dts
index efe98b0e10..44dfc1796c 100644
--- a/target/linux/ramips/dts/MIR3G.dts
+++ b/target/linux/ramips/dts/MIR3G.dts
@@ -66,16 +66,19 @@
 		};
 	};
 
-	gpio_export {
-		compatible = "gpio-export";
-		#size-cells = <0>;
-
-		usbpower {
-			gpio-export,name = "usbpower";
-			gpio-export,output = <1>;
-			gpios = <&gpio0 12 GPIO_ACTIVE_HIGH>;
-		};
+	reg_usb_vbus: reg_usb_vbus {
+		compatible = "regulator-fixed";
+		regulator-name = "usb_vbus";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		gpio = <&gpio0 12 GPIO_ACTIVE_HIGH>;
+		enable-active-high;
 	};
+
+};
+
+&xhci {
+	vbus-supply = <&reg_usb_vbus>;
 };
 
 &nand {
diff --git a/target/linux/ramips/mt7621/config-4.14 b/target/linux/ramips/mt7621/config-4.14
index 3a5cd4296a..c19d735e5c 100644
--- a/target/linux/ramips/mt7621/config-4.14
+++ b/target/linux/ramips/mt7621/config-4.14
@@ -227,6 +227,8 @@ CONFIG_RCU_STALL_COMMON=y
 CONFIG_REGMAP=y
 CONFIG_REGMAP_I2C=y
 CONFIG_REGMAP_SPI=y
+CONFIG_REGULATOR=y
+CONFIG_REGULATOR_FIXED_VOLTAGE=y
 CONFIG_RESET_CONTROLLER=y
 CONFIG_RFS_ACCEL=y
 CONFIG_RPS=y