linux_kernel/arch/arm64/boot/dts/amlogic/meson-g12a.dtsi

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Copyright (c) 2018 Amlogic, Inc. All rights reserved.
 */

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>

/ {
	compatible = "amlogic,g12a";

	interrupt-parent = <&gic>;
	#address-cells = <2>;
	#size-cells = <2>;

	cpus {
		#address-cells = <0x2>;
		#size-cells = <0x0>;

		cpu0: cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-a53", "arm,armv8";
			reg = <0x0 0x0>;
			enable-method = "psci";
			next-level-cache = <&l2>;
		};

		cpu1: cpu@1 {
			device_type = "cpu";
			compatible = "arm,cortex-a53", "arm,armv8";
			reg = <0x0 0x1>;
			enable-method = "psci";
			next-level-cache = <&l2>;
		};

		cpu2: cpu@2 {
			device_type = "cpu";
			compatible = "arm,cortex-a53", "arm,armv8";
			reg = <0x0 0x2>;
			enable-method = "psci";
			next-level-cache = <&l2>;
		};

		cpu3: cpu@3 {
			device_type = "cpu";
			compatible = "arm,cortex-a53", "arm,armv8";
			reg = <0x0 0x3>;
			enable-method = "psci";
			next-level-cache = <&l2>;
		};

		l2: l2-cache0 {
			compatible = "cache";
		};
	};

	psci {
		compatible = "arm,psci-1.0";
		method = "smc";
	};

	reserved-memory {
		#address-cells = <2>;
		#size-cells = <2>;
		ranges;

		/* 3 MiB reserved for ARM Trusted Firmware (BL31) */
		secmon_reserved: secmon@5000000 {
			reg = <0x0 0x05000000 0x0 0x300000>;
			no-map;
		};
	};

	soc {
		compatible = "simple-bus";
		#address-cells = <2>;
		#size-cells = <2>;
		ranges;

		periphs: periphs@ff634000 {
			compatible = "simple-bus";
			reg = <0x0 0xff634000 0x0 0x2000>;
			#address-cells = <2>;
			#size-cells = <2>;
			ranges = <0x0 0x0 0x0 0xff634000 0x0 0x2000>;
		};

		hiubus: bus@ff63c000 {
			compatible = "simple-bus";
			reg = <0x0 0xff63c000 0x0 0x1c00>;
			#address-cells = <2>;
			#size-cells = <2>;
			ranges = <0x0 0x0 0x0 0xff63c000 0x0 0x1c00>;
		};

		aobus: bus@ff800000 {
			compatible = "simple-bus";
			reg = <0x0 0xff800000 0x0 0x100000>;
			#address-cells = <2>;
			#size-cells = <2>;
			ranges = <0x0 0x0 0x0 0xff800000 0x0 0x100000>;

			uart_AO: serial@3000 {
				compatible = "amlogic,meson-gx-uart", "amlogic,meson-ao-uart";
				reg = <0x0 0x3000 0x0 0x18>;
				interrupts = <GIC_SPI 193 IRQ_TYPE_EDGE_RISING>;
				clocks = <&xtal>, <&xtal>, <&xtal>;
				clock-names = "xtal", "pclk", "baud";
				status = "disabled";
			};

			uart_AO_B: serial@4000 {
				compatible = "amlogic,meson-gx-uart", "amlogic,meson-ao-uart";
				reg = <0x0 0x4000 0x0 0x18>;
				interrupts = <GIC_SPI 197 IRQ_TYPE_EDGE_RISING>;
				clocks = <&xtal>, <&xtal>, <&xtal>;
				clock-names = "xtal", "pclk", "baud";
				status = "disabled";
			};
		};

		gic: interrupt-controller@ffc01000 {
			compatible = "arm,gic-400";
			reg = <0x0 0xffc01000 0 0x1000>,
			      <0x0 0xffc02000 0 0x2000>,
			      <0x0 0xffc04000 0 0x2000>,
			      <0x0 0xffc06000 0 0x2000>;
			interrupt-controller;
			interrupts = <GIC_PPI 9
				(GIC_CPU_MASK_SIMPLE(8) | IRQ_TYPE_LEVEL_HIGH)>;
			#interrupt-cells = <3>;
			#address-cells = <0>;
		};

		cbus: bus@ffd00000 {
			compatible = "simple-bus";
			reg = <0x0 0xffd00000 0x0 0x25000>;
			#address-cells = <2>;
			#size-cells = <2>;
			ranges = <0x0 0x0 0x0 0xffd00000 0x0 0x25000>;
		};

		apb: apb@ffe00000 {
			compatible = "simple-bus";
			reg = <0x0 0xffe00000 0x0 0x200000>;
			#address-cells = <2>;
			#size-cells = <2>;
			ranges = <0x0 0x0 0x0 0xffe00000 0x0 0x200000>;
		};
	};

	timer {
		compatible = "arm,armv8-timer";
		interrupts = <GIC_PPI 13
			(GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>,
			     <GIC_PPI 14
			(GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>,
			     <GIC_PPI 11
			(GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>,
			     <GIC_PPI 10
			(GIC_CPU_MASK_RAW(0xff) | IRQ_TYPE_LEVEL_LOW)>;
	};

	xtal: xtal-clk {
		compatible = "fixed-clock";
		clock-frequency = <24000000>;
		clock-output-names = "xtal";
		#clock-cells = <0>;
	};

};