[PATCH 1/2] arm64: dts: axiado: Add AX3005 SCM3005 device tree

[Karthikeyan Mitran]

From: Siu Ming Tong <smtong at axiado.com>

Add device tree source files for the Axiado AX3005 SCM3005 board.
The AX3005 is a quad-core 64-bit ARMv8 Cortex-A53 SoC.

The DTSI describes the SoC-level nodes: GIC-v3 interrupt controller,
Cadence/Zynq UART, fixed reference clock, and spin-table secondary
CPU boot.  A /memreserve/ directive protects the spin-table release
address at 0x80002fa0 from being overwritten during boot.

The SCM3005 DTS sets the console to uart3 at 115200 baud and declares
2 GB of DRAM starting at 0x80000000.

Tested-by: Siu Ming Tong <smtong at axiado.com>
Signed-off-by: Siu Ming Tong <smtong at axiado.com>
Signed-off-by: Tzu-Hao Wei <twei at axiado.com>
Signed-off-by: Karthikeyan Mitran <kmitran at axiado.com>
---
 arch/arm/dts/Makefile           |   1 +
 arch/arm/dts/ax3005-scm3005.dts |  28 +++++++++++
 arch/arm/dts/ax3005.dtsi        | 100 ++++++++++++++++++++++++++++++++++++++++
 3 files changed, 129 insertions(+)

diff --git a/arch/arm/dts/Makefile b/arch/arm/dts/Makefile
index bff341d6118..fcc62505987 100644
--- a/arch/arm/dts/Makefile
+++ b/arch/arm/dts/Makefile
@@ -4,6 +4,7 @@ dtb-$(CONFIG_TARGET_SMARTWEB) += at91sam9260-smartweb.dtb
 dtb-$(CONFIG_TARGET_TAURUS) += at91sam9g20-taurus.dtb
 dtb-$(CONFIG_TARGET_CORVUS) += at91sam9g45-corvus.dtb
 dtb-$(CONFIG_TARGET_GURNARD) += at91sam9g45-gurnard.dtb
+dtb-$(CONFIG_TARGET_SCM3005) += ax3005-scm3005.dtb
 
 dtb-$(CONFIG_TARGET_SMDKC100) += s5pc1xx-smdkc100.dtb
 dtb-$(CONFIG_TARGET_S5P_GONI) += s5pc1xx-goni.dtb
diff --git a/arch/arm/dts/ax3005-scm3005.dts b/arch/arm/dts/ax3005-scm3005.dts
new file mode 100644
index 00000000000..b684602176c
--- /dev/null
+++ b/arch/arm/dts/ax3005-scm3005.dts
@@ -0,0 +1,28 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2021-2026 Axiado Corporation (or its affiliates).
+ */
+
+/dts-v1/;
+
+#include "ax3005.dtsi"
+
+/ {
+	model = "Axiado AX3005 SCM3005";
+	compatible = "axiado,ax3005-scm3005", "axiado,ax3005";
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	chosen {
+		stdout-path = "serial3:115200";
+	};
+
+	memory at 80000000 {
+		device_type = "memory";
+		reg = <0x00 0x80000000 0x00 0x80000000>;
+	};
+};
+
+&uart3 {
+	status = "okay";
+};
diff --git a/arch/arm/dts/ax3005.dtsi b/arch/arm/dts/ax3005.dtsi
new file mode 100644
index 00000000000..6df2e4a821c
--- /dev/null
+++ b/arch/arm/dts/ax3005.dtsi
@@ -0,0 +1,100 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (c) 2021-2026 Axiado Corporation (or its affiliates).
+ */
+
+#include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
+/memreserve/ 0x80002fa0 0x00000008;
+
+/ {
+	aliases {
+		serial3 = &uart3;
+	};
+
+	cpus {
+		#address-cells = <2>;
+		#size-cells = <0>;
+
+		cpu0: cpu at 0 {
+			compatible = "arm,cortex-a53";
+			device_type = "cpu";
+			reg = <0x0 0x0>;
+			enable-method = "spin-table";
+			cpu-release-addr = <0x0 0x80002fa0>;
+		};
+		cpu1: cpu at 1 {
+			compatible = "arm,cortex-a53";
+			device_type = "cpu";
+			reg = <0x0 0x1>;
+			enable-method = "spin-table";
+			cpu-release-addr = <0x0 0x80002fa0>;
+		};
+		cpu2: cpu at 2 {
+			compatible = "arm,cortex-a53";
+			device_type = "cpu";
+			reg = <0x0 0x2>;
+			enable-method = "spin-table";
+			cpu-release-addr = <0x0 0x80002fa0>;
+		};
+		cpu3: cpu at 3 {
+			compatible = "arm,cortex-a53";
+			device_type = "cpu";
+			reg = <0x0 0x3>;
+			enable-method = "spin-table";
+			cpu-release-addr = <0x0 0x80002fa0>;
+		};
+	};
+
+	timer {
+		compatible = "arm,armv8-timer";
+		interrupt-parent = <&gic500>;
+		interrupts = <GIC_PPI 13 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 14 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+			     <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
+		clock-frequency = <1000000000>;
+	};
+
+	clocks {
+		refclk: refclk {
+			compatible = "fixed-clock";
+			#clock-cells = <0>;
+			clock-frequency = <125000000>;
+			bootph-pre-reloc;
+		};
+	};
+
+	soc: soc {
+		compatible = "simple-bus";
+		#address-cells = <2>;
+		#size-cells = <2>;
+		interrupt-parent = <&gic500>;
+		ranges;
+
+		gic500: interrupt-controller at 40400000 {
+			compatible = "arm,gic-v3";
+			#address-cells = <2>;
+			#size-cells = <2>;
+			ranges;
+			#interrupt-cells = <3>;
+			interrupt-controller;
+			#redistributor-regions = <1>;
+			reg = <0x00 0x40400000 0x00 0x10000>,
+			      <0x00 0x40500000 0x00 0xc0000>;
+			interrupts = <GIC_PPI 9 IRQ_TYPE_LEVEL_HIGH>;
+		};
+
+		uart3: serial at 33020800 {
+			compatible = "cdns,uart-r1p12", "xlnx,xuartps";
+			interrupt-parent = <&gic500>;
+			interrupts = <GIC_SPI 170 IRQ_TYPE_LEVEL_HIGH>;
+			reg = <0x00 0x33020800 0x00 0x100>;
+			clock-names = "uart_clk", "pclk";
+			clocks = <&refclk &refclk>;
+			bootph-pre-reloc;
+			status = "disabled";
+		};
+	};
+};

-- 
2.34.1