diff --git a/arch/arm/dts/r8a78000-ironhide-cm33-u-boot.dtsi b/arch/arm/dts/r8a78000-ironhide-cm33-u-boot.dtsi
index 356f633135d..872cbfdbad6 100644
--- a/arch/arm/dts/r8a78000-ironhide-cm33-u-boot.dtsi
+++ b/arch/arm/dts/r8a78000-ironhide-cm33-u-boot.dtsi
@@ -70,6 +70,23 @@
 		reg = <0 0xb8940000 0 0xf000>;
 	};
 
+	spi@c08c0000 {
+		compatible = "renesas,r8a78000-rpc-if",
+			     "renesas,rcar-gen5-rpc-if";
+		reg = <0 0xc08c0000 0 0x200>,
+		      <0 0x34000000 0 0x04000000>,
+		      <0 0xc08c8000 0 0x100>;
+		reg-names = "regs", "dirmap", "wbuf";
+		clocks = <&dummy_clk_rclk>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		flash@0 {
+			compatible = "cypress,hyperflash", "cfi-flash";
+			reg = <0>;
+		};
+	};
+
 	scp@c1340000 {
 		compatible = "renesas,r8a78000-rproc";
 		reg = <0 0xc1340000 0 0x80000>;