arch/arm64/boot/dts/sprd/ums9620.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/sprd/ums9620.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/sprd/ums9620.dtsi
Extension
.dtsi
Size
5421 bytes
Lines
252
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)
/*
 * Unisoc UMS9620 DTS file
 *
 * Copyright (C) 2023, Unisoc Inc.
 */

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

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

	cpus {
		#address-cells = <2>;
		#size-cells = <0>;

		cpu-map {
			cluster0 {
				core0 {
					cpu = <&CPU0>;
				};
				core1 {
					cpu = <&CPU1>;
				};
				core2 {
					cpu = <&CPU2>;
				};
				core3 {
					cpu = <&CPU3>;
				};
				core4 {
					cpu = <&CPU4>;
				};
				core5 {
					cpu = <&CPU5>;
				};
				core6 {
					cpu = <&CPU6>;
				};
				core7 {
					cpu = <&CPU7>;
				};
			};
		};

		CPU0: cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-a55";
			reg = <0x0 0x0>;
			enable-method = "psci";
			cpu-idle-states = <&LIT_CORE_PD>;
		};

		CPU1: cpu@100 {
			device_type = "cpu";
			compatible = "arm,cortex-a55";
			reg = <0x0 0x100>;
			enable-method = "psci";
			cpu-idle-states = <&LIT_CORE_PD>;
		};

		CPU2: cpu@200 {
			device_type = "cpu";
			compatible = "arm,cortex-a55";
			reg = <0x0 0x200>;
			enable-method = "psci";
			cpu-idle-states = <&LIT_CORE_PD>;
		};

Annotation

Implementation Notes