[PATCH v4 5/5] arm64: dts: renesas: R8A78000: Add initial Ironhide support

[Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>]

From: Hai Pham <hai.pham.ud@renesas.com>

Add the initial support for Renesas X5H Ironhide board.

Note: It is using "maxcpus" in bootargs to limit number of CPU, because
SMP support is now under development. This limitation will be removed
in the future.

[Kuninori: tidyup for upstreaming]

Signed-off-by: Hai Pham <hai.pham.ud@renesas.com>
Signed-off-by: Vinh Nguyen <vinh.nguyen.xz@renesas.com>
Signed-off-by: Takeshi Kihara <takeshi.kihara.df@renesas.com>
Signed-off-by: Khanh Le <khanh.le.xr@renesas.com>
Signed-off-by: Huy Bui <huy.bui.wm@renesas.com>
Signed-off-by: Phong Hoang <phong.hoang.wz@renesas.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
---
 arch/arm64/boot/dts/renesas/Makefile          |  2 +
 .../boot/dts/renesas/r8a78000-ironhide.dts    | 92 +++++++++++++++++++
 2 files changed, 94 insertions(+)
 create mode 100644 arch/arm64/boot/dts/renesas/r8a78000-ironhide.dts

diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index ccdf7aaeca13e..dde046a3f25c8 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -136,6 +136,8 @@ dtb-$(CONFIG_ARCH_R8A77965) += r8a779m5-salvator-xs.dtb
 r8a779m5-salvator-xs-panel-aa104xd12-dtbs := r8a779m5-salvator-xs.dtb salvator-panel-aa104xd12.dtbo
 dtb-$(CONFIG_ARCH_R8A77965) += r8a779m5-salvator-xs-panel-aa104xd12.dtb
 
+dtb-$(CONFIG_ARCH_R8A78000) += r8a78000-ironhide.dtb
+
 dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043u11-smarc.dtb
 dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043u11-smarc-cru-csi-ov5645.dtbo
 dtb-$(CONFIG_ARCH_R9A07G043) += r9a07g043u11-smarc-du-adv7513.dtbo
diff --git a/arch/arm64/boot/dts/renesas/r8a78000-ironhide.dts b/arch/arm64/boot/dts/renesas/r8a78000-ironhide.dts
new file mode 100644
index 0000000000000..29b7180cabbcd
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a78000-ironhide.dts
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Device Tree Source for the Ironhide board
+ *
+ * Copyright (C) 2025 Renesas Electronics Corp.
+ */
+
+/dts-v1/;
+#include "r8a78000.dtsi"
+
+/ {
+	model = "Renesas Ironhide board based on r8a78000";
+	compatible = "renesas,ironhide", "renesas,r8a78000";
+
+	aliases {
+		serial0 = &hscif0;
+	};
+
+	chosen {
+		/*
+		 * REMOVE-ME
+		 *
+		 * It works 1 CPU core only for now. This limitation will be
+		 * removed in future.
+		 */
+		bootargs = "maxcpus=1";
+		stdout-path = "serial0:1843200n8";
+	};
+
+	memory@60600000 {
+		device_type = "memory";
+		/* first 518MiB is reserved for other purposes. */
+		reg = <0x0 0x60600000 0x0 0x5fa00000>;
+	};
+
+	memory@1080000000 {
+		device_type = "memory";
+		reg = <0x10 0x80000000 0x0 0x80000000>;
+	};
+
+	memory@1200000000 {
+		device_type = "memory";
+		reg = <0x12 0x00000000 0x1 0x00000000>;
+	};
+
+	memory@1400000000 {
+		device_type = "memory";
+		reg = <0x14 0x00000000 0x1 0x00000000>;
+	};
+
+	memory@1600000000 {
+		device_type = "memory";
+		reg = <0x16 0x00000000 0x1 0x00000000>;
+	};
+
+	memory@1800000000 {
+		device_type = "memory";
+		reg = <0x18 0x00000000 0x1 0x00000000>;
+	};
+
+	memory@1a00000000 {
+		device_type = "memory";
+		reg = <0x1a 0x00000000 0x1 0x00000000>;
+	};
+
+	memory@1c00000000 {
+		device_type = "memory";
+		reg = <0x1c 0x00000000 0x1 0x00000000>;
+	};
+
+	memory@1e00000000 {
+		device_type = "memory";
+		reg = <0x1e 0x00000000 0x1 0x00000000>;
+	};
+};
+
+&extal_clk {
+	clock-frequency = <16666600>;
+};
+
+&extalr_clk {
+	clock-frequency = <32768>;
+};
+
+&hscif0 {
+	uart-has-rtscts;
+	status = "okay";
+};
+
+&scif_clk {
+	clock-frequency = <26000000>;
+};
-- 
2.43.0