arch/arm64/boot/dts/sophgo/sg2000.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/sophgo/sg2000.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/sophgo/sg2000.dtsi
Extension
.dtsi
Size
1899 bytes
Lines
87
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

Detected Declarations

Annotated Snippet

// SPDX-License-Identifier: (GPL-2.0 OR MIT)

#define SOC_PERIPHERAL_IRQ(nr)		GIC_SPI (nr)

#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <riscv/sophgo/cv180x.dtsi>
#include <riscv/sophgo/cv181x.dtsi>

/ {
	compatible = "sophgo,sg2000";
	interrupt-parent = <&gic>;

	cpus {
		#address-cells = <1>;
		#size-cells = <0>;

		cpu@0 {
			compatible = "arm,cortex-a53";
			device_type = "cpu";
			reg = <0>;
			enable-method = "psci";
			i-cache-size = <32768>;
			d-cache-size = <32768>;
			next-level-cache = <&l2>;
		};

		l2: l2-cache {
			compatible = "cache";
			cache-level = <2>;
			cache-unified;
			cache-size = <0x20000>;
		};
	};

	memory@80000000 {
		device_type = "memory";
		reg = <0x80000000 0x20000000>;	/* 512MiB */
	};

	pmu {
		compatible = "arm,cortex-a53-pmu";
		interrupts = <GIC_SPI 119 IRQ_TYPE_LEVEL_HIGH>,
			     <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
	};

	psci {
		compatible = "arm,psci-0.2";
		method = "smc";
		cpu_on = <0xc4000003>;
		cpu_off = <0x84000002>;
	};

	soc {
		gic: interrupt-controller@1f01000 {
			compatible = "arm,cortex-a15-gic";
			interrupt-controller;
			#interrupt-cells = <3>;
			reg = <0x01f01000 0x1000>,
			      <0x01f02000 0x2000>;
		};

		pinctrl: pinctrl@3001000 {
			compatible = "sophgo,sg2000-pinctrl";
			reg = <0x03001000 0x1000>,
			      <0x05027000 0x1000>;
			reg-names = "sys", "rtc";
		};

		clk: clock-controller@3002000 {
			compatible = "sophgo,sg2000-clk";

Annotation

Implementation Notes