arm64: dts: renesas: Add support for Salvator-XS with R-Car M3Ne-2G

Add support for the Renesas Salvator-X 2nd version development board
equipped with an R-Car M3Ne-2G SiP.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Link: https://lore.kernel.org/r/efced5c7ff71b0a0ae359be12112e0d4dfb21a72.1628766192.git.geert+renesas@glider.be

arch/arm64/boot/dts/renesas/Makefile

@@ -71,4 +71,6 @@ dtb-$(CONFIG_ARCH_R8A77961) += r8a779m3-salvator-xs.dtb
 dtb-$(CONFIG_ARCH_R8A77961) += r8a779m3-ulcb.dtb
 dtb-$(CONFIG_ARCH_R8A77961) += r8a779m3-ulcb-kf.dtb
 
+dtb-$(CONFIG_ARCH_R8A77965) += r8a779m5-salvator-xs.dtb
+
 dtb-$(CONFIG_ARCH_R9A07G044) += r9a07g044l2-smarc.dtb

arch/arm64/boot/dts/renesas/r8a779m5-salvator-xs.dts

@@ -0,0 +1,36 @@
+// SPDX-License-Identifier: (GPL-2.0 or MIT)
+/*
+ * Device Tree Source for the Salvator-X 2nd version board with R-Car M3Ne-2G
+ *
+ * Copyright (C) 2021 Glider bv
+ *
+ * Based on r8a77965-salvator-xs.dts
+ * Copyright (C) 2017 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+#include "r8a779m5.dtsi"
+#include "salvator-xs.dtsi"
+
+/ {
+	model = "Renesas Salvator-X 2nd version board based on r8a779m5";
+	compatible = "renesas,salvator-xs", "renesas,r8a779m5",
+		     "renesas,r8a77965";
+
+	memory@48000000 {
+		device_type = "memory";
+		/* first 128MB is reserved for secure area. */
+		reg = <0x0 0x48000000 0x0 0x78000000>;
+	};
+};
+
+&du {
+	clocks = <&cpg CPG_MOD 724>,
+		 <&cpg CPG_MOD 723>,
+		 <&cpg CPG_MOD 721>,
+		 <&versaclock6 1>,
+		 <&x21_clk>,
+		 <&versaclock6 2>;
+	clock-names = "du.0", "du.1", "du.3",
+		      "dclkin.0", "dclkin.1", "dclkin.3";
+};