diff --git a/arch/arm/dts/r8a774a1-hihope-rzg2m.dts b/arch/arm/dts/r8a774a1-hihope-rzg2m.dts
new file mode 100644
index 0000000..a574c85
--- /dev/null
+++ b/arch/arm/dts/r8a774a1-hihope-rzg2m.dts
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the HiHope RZ/G2M Rev.3.0/4.0 main board
+ *
+ * Copyright (C) 2021 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+#include "r8a774a1.dtsi"
+#include "hihope-rev4.dtsi"
+
+/ {
+	model = "HopeRun HiHope RZ/G2M main board based on r8a774a1";
+	compatible = "hoperun,hihope-rzg2m", "renesas,r8a774a1";
+
+	memory@48000000 {
+		device_type = "memory";
+		/* first 128MB is reserved for secure area. */
+		reg = <0x0 0x48000000 0x0 0x78000000>;
+	};
+
+	memory@600000000 {
+		device_type = "memory";
+		reg = <0x6 0x00000000 0x0 0x80000000>;
+	};
+};
+
+&du {
+	clocks = <&cpg CPG_MOD 724>,
+		 <&cpg CPG_MOD 723>,
+		 <&cpg CPG_MOD 722>,
+		 <&versaclock5 1>,
+		 <&x302_clk>,
+		 <&versaclock5 2>;
+	clock-names = "du.0", "du.1", "du.2",
+		      "dclkin.0", "dclkin.1", "dclkin.2";
+};