diff --git a/arch/arm/boot/dts/r8a7740.dtsi b/arch/arm/boot/dts/r8a7740.dtsi
index 1067a96c8425..d46c213a17ad 100644
--- a/arch/arm/boot/dts/r8a7740.dtsi
+++ b/arch/arm/boot/dts/r8a7740.dtsi
@@ -42,7 +42,7 @@ pmu {
 	};
 
 	cmt1: timer@e6138000 {
-		compatible = "renesas,cmt-48";
+		compatible = "renesas,cmt-48-r8a7740", "renesas,cmt-48";
 		reg = <0xe6138000 0x170>;
 		interrupts = <0 58 IRQ_TYPE_LEVEL_HIGH>;
 		clocks = <&mstp3_clks R8A7740_CLK_CMT1>;