diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986-fpga.dtsi b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986-fpga.dtsi
index d8fa26d..96115f2 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986-fpga.dtsi
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986-fpga.dtsi
@@ -352,6 +352,15 @@
 		status = "disabled";
 	};
 
+	auxadc: adc@1100d000 {
+		compatible = "mediatek,mt7986-auxadc",
+			     "mediatek,mt7622-auxadc";
+		reg = <0 0x1100d000 0 0x1000>;
+		clocks = <&system_clk>;
+		clock-names = "main";
+		#io-channel-cells = <1>;
+        };
+
 	consys: consys@10000000 {
 		compatible = "mediatek,mt7986-consys";
 		reg = <0 0x10000000 0 0x8600000>;
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986a.dtsi b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
index 021f655..dfefc76 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986a.dtsi
@@ -429,6 +429,15 @@
 		status = "disabled";
 	};
 
+	auxadc: adc@1100d000 {
+		compatible = "mediatek,mt7986-auxadc",
+			     "mediatek,mt7622-auxadc";
+		reg = <0 0x1100d000 0 0x1000>;
+		clocks = <&system_clk>;
+		clock-names = "main";
+		#io-channel-cells = <1>;
+	};
+
 	consys: consys@10000000 {
 		compatible = "mediatek,mt7986-consys";
 		reg = <0 0x10000000 0 0x8600000>;
diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b.dtsi b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
index 0ceb10b..7e309ee 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b.dtsi
@@ -429,6 +429,15 @@
 		status = "disabled";
 	};
 
+	auxadc: adc@1100d000 {
+		compatible = "mediatek,mt7986-auxadc",
+			     "mediatek,mt7622-auxadc";
+		reg = <0 0x1100d000 0 0x1000>;
+		clocks = <&system_clk>;
+		clock-names = "main";
+		#io-channel-cells = <1>;
+	};
+
 	consys: consys@10000000 {
 		compatible = "mediatek,mt7986-consys";
 		reg = <0 0x10000000 0 0x8600000>;