diff --git a/arch/arm/boot/dts/rk3506g-iotest-v10.dts b/arch/arm/boot/dts/rk3506g-iotest-v10.dts
index 4a24de1217f3..f4112dd32dda 100644
--- a/arch/arm/boot/dts/rk3506g-iotest-v10.dts
+++ b/arch/arm/boot/dts/rk3506g-iotest-v10.dts
@@ -24,6 +24,23 @@
 		interrupts = <GIC_SPI 115 IRQ_TYPE_LEVEL_HIGH>;
 	};
 
+	pdmics: dummy-codec {
+		compatible = "rockchip,dummy-codec";
+		#sound-dai-cells = <0>;
+	};
+
+	pdm_mic_array: pdm-mic-array {
+		status = "disabled";
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "rockchip,pdm-mic-array";
+		simple-audio-card,cpu {
+			sound-dai = <&pdm>;
+		};
+		simple-audio-card,codec {
+			sound-dai = <&pdmics>;
+		};
+	};
+
 	vcc12v_dc: vcc12v-dc {
 		compatible = "regulator-fixed";
 		regulator-name = "vcc12v_dc";
@@ -161,6 +178,10 @@
 	status = "okay";
 };
 
+&pdm {
+	status = "okay";
+};
+
 &pinctrl {
 	sdmmc {
 		/omit-if-no-ref/