diff --git a/arch/arm/boot/dts/mt2701-evb.dts b/arch/arm/boot/dts/mt2701-evb.dts
index 879f1ebfc16d..a4837985b7a7 100644
--- a/arch/arm/boot/dts/mt2701-evb.dts
+++ b/arch/arm/boot/dts/mt2701-evb.dts
@@ -24,6 +24,10 @@
 	};
 };
 
+&auxadc {
+	status = "okay";
+};
+
 &pio {
 	spi_pins_a: spi0@0 {
 		pins_spi {
diff --git a/arch/arm/boot/dts/mt2701.dtsi b/arch/arm/boot/dts/mt2701.dtsi
index 9edf000cf7af..af5c737a10a5 100644
--- a/arch/arm/boot/dts/mt2701.dtsi
+++ b/arch/arm/boot/dts/mt2701.dtsi
@@ -207,6 +207,15 @@
 		      <0 0x10216000 0 0x2000>;
 	};
 
+	auxadc: adc@11001000 {
+		compatible = "mediatek,mt2701-auxadc";
+		reg = <0 0x11001000 0 0x1000>;
+		clocks = <&pericfg CLK_PERI_AUXADC>;
+		clock-names = "main";
+		#io-channel-cells = <1>;
+		status = "disabled";
+	};
+
 	uart0: serial@11002000 {
 		compatible = "mediatek,mt2701-uart",
 			     "mediatek,mt6577-uart";