diff --git a/arch/arm/boot/dts/r7s72100-genmai.dts b/arch/arm/boot/dts/r7s72100-genmai.dts
index 56849b55e1c2..20705467f4c9 100644
--- a/arch/arm/boot/dts/r7s72100-genmai.dts
+++ b/arch/arm/boot/dts/r7s72100-genmai.dts
@@ -57,3 +57,13 @@
 &scif2 {
 	status = "okay";
 };
+
+&spi4 {
+	status = "okay";
+
+	codec: codec@0 {
+		compatible = "wlf,wm8978";
+		reg = <0>;
+		spi-max-frequency = <5000000>;
+	};
+};