diff --git a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
index 64c54c92e214d686154de4b237f71a5212c5eb20..a8aa9ce5f55e3732f8a59a8beb6f994538597d40 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-libretech-cc.dts
@@ -96,6 +96,13 @@
 		regulator-settling-time-down-us = <50000>;
 	};
 
+	vddio_ao18: regulator-vddio_ao18 {
+		compatible = "regulator-fixed";
+		regulator-name = "VDDIO_AO18";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
 	vddio_boot: regulator-vddio_boot {
 		compatible = "regulator-fixed";
 		regulator-name = "VDDIO_BOOT";
@@ -196,6 +203,11 @@
 			  "7J1 Header Pin15";
 };
 
+&saradc {
+	status = "okay";
+	vref-supply = <&vddio_ao18>;
+};
+
 /* SD card */
 &sd_emmc_b {
 	status = "okay";