diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi
index 091d7fb6ee7d..4c50de2faef1 100644
--- a/arch/arm/boot/dts/r8a7791.dtsi
+++ b/arch/arm/boot/dts/r8a7791.dtsi
@@ -1485,6 +1485,11 @@ R8A7791_CLK_SCIFA3 R8A7791_CLK_SCIFA4 R8A7791_CLK_SCIFA5
 		};
 	};
 
+	prr: chipid@ff000044 {
+		compatible = "renesas,prr";
+		reg = <0 0xff000044 0 4>;
+	};
+
 	sysc: system-controller@e6180000 {
 		compatible = "renesas,r8a7791-sysc";
 		reg = <0 0xe6180000 0 0x0200>;