diff --git a/arch/arm/boot/dts/r7s72100.dtsi b/arch/arm/boot/dts/r7s72100.dtsi
index 1d28d01c163c..801a556e264b 100644
--- a/arch/arm/boot/dts/r7s72100.dtsi
+++ b/arch/arm/boot/dts/r7s72100.dtsi
@@ -230,7 +230,7 @@
 	};
 
 	mtu2: timer@fcff0000 {
-		compatible = "renesas,mtu2";
+		compatible = "renesas,mtu2-r7s72100", "renesas,mtu2";
 		reg = <0xfcff0000 0x400>;
 		interrupts = <0 107 IRQ_TYPE_LEVEL_HIGH>;
 		interrupt-names = "tgi0a";