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diff --git a/arch/arm64/boot/dts/renesas/r8a779m3-ulcb.dts b/arch/arm64/boot/dts/renesas/r8a779m3-ulcb.dts
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+++ b/arch/arm64/boot/dts/renesas/r8a779m3-ulcb.dts
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+// SPDX-License-Identifier: (GPL-2.0 or MIT)
+/*
+ * Device Tree Source for the M3ULCB (R-Car Starter Kit Pro) with R-Car M3e-2G
+ *
+ * Copyright (C) 2021 Glider bv
+ *
+ * Based on r8a77961-ulcb.dts
+ * Copyright (C) 2020 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+#include "r8a779m3.dtsi"
+#include "ulcb.dtsi"
+
+/ {
+ model = "Renesas M3ULCB board based on r8a779m3";
+ compatible = "renesas,m3ulcb", "renesas,r8a779m3", "renesas,r8a77961";
+
+ memory@48000000 {
+ device_type = "memory";
+ /* first 128MB is reserved for secure area. */
+ reg = <0x0 0x48000000 0x0 0x78000000>;
+ };
+
+ memory@480000000 {
+ device_type = "memory";
+ reg = <0x4 0x80000000 0x0 0x80000000>;
+ };
+
+ memory@600000000 {
+ device_type = "memory";
+ reg = <0x6 0x00000000 0x1 0x00000000>;
+ };
+};
+
+&du {
+ clocks = <&cpg CPG_MOD 724>,
+ <&cpg CPG_MOD 723>,
+ <&cpg CPG_MOD 722>,
+ <&versaclock5 1>,
+ <&versaclock5 3>,
+ <&versaclock5 2>;
+ clock-names = "du.0", "du.1", "du.2",
+ "dclkin.0", "dclkin.1", "dclkin.2";
+};