arch/arm64/boot/dts/mediatek/mt7981b.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/mediatek/mt7981b.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/mediatek/mt7981b.dtsi
Extension
.dtsi
Size
14914 bytes
Lines
534
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-only OR MIT

#include <dt-bindings/clock/mediatek,mt7981-clk.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/leds/common.h>
#include <dt-bindings/phy/phy.h>
#include <dt-bindings/reset/mt7986-resets.h>

/ {
	compatible = "mediatek,mt7981b";
	interrupt-parent = <&gic>;
	#address-cells = <2>;
	#size-cells = <2>;

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

		cpu@0 {
			compatible = "arm,cortex-a53";
			reg = <0x0>;
			device_type = "cpu";
			enable-method = "psci";
		};

		cpu@1 {
			compatible = "arm,cortex-a53";
			reg = <0x1>;
			device_type = "cpu";
			enable-method = "psci";
		};
	};

	oscillator-40m {
		compatible = "fixed-clock";
		clock-frequency = <40000000>;
		clock-output-names = "clkxtal";
		#clock-cells = <0>;
	};

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

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

		wo_boot: wo-boot@15194000 {
			reg = <0 0x15194000 0 0x1000>;
			no-map;
		};

		wo_ilm0: wo-ilm@151e0000 {
			reg = <0 0x151e0000 0 0x8000>;
			no-map;
		};

		wo_dlm0: wo-dlm@151e8000 {
			reg = <0 0x151e8000 0 0x2000>;
			no-map;
		};

		/* 192 KiB reserved for ARM Trusted Firmware (BL31) */
		secmon_reserved: secmon@43000000 {
			reg = <0 0x43000000 0 0x30000>;
			no-map;
		};

Annotation

Implementation Notes