diff --git a/arch/arm64/boot/dts/renesas/rzg2ul-smarc-som.dtsi b/arch/arm64/boot/dts/renesas/rzg2ul-smarc-som.dtsi
index 8fdc956cd6c7..cf3b3d118ef1 100644
--- a/arch/arm64/boot/dts/renesas/rzg2ul-smarc-som.dtsi
+++ b/arch/arm64/boot/dts/renesas/rzg2ul-smarc-som.dtsi
@@ -57,6 +57,14 @@ vccq_sdhi0: regulator-vccq-sdhi0 {
 #endif
 };
 
+#if (SW_SW0_DEV_SEL)
+&adc {
+	pinctrl-0 = <&adc_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+#endif
+
 #if (!SW_ET0_EN_N)
 &eth0 {
 	pinctrl-0 = <&eth0_pins>;
@@ -124,6 +132,10 @@ &ostm2 {
 };
 
 &pinctrl {
+	adc_pins: adc {
+		pinmux = <RZG2L_PORT_PINMUX(6, 2, 1)>; /* ADC_TRG */
+	};
+
 	eth0_pins: eth0 {
 		pinmux = <RZG2L_PORT_PINMUX(4, 5, 1)>, /* ET0_LINKSTA */
 			 <RZG2L_PORT_PINMUX(4, 3, 1)>, /* ET0_MDC */