arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/fsl-ls1012a.dtsi
Extension
.dtsi
Size
15597 bytes
Lines
580
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)
/*
 * Device Tree Include file for NXP Layerscape-1012A family SoC.
 *
 * Copyright 2016 Freescale Semiconductor, Inc.
 * Copyright 2019-2020 NXP
 *
 */

#include <dt-bindings/clock/fsl,qoriq-clockgen.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/thermal/thermal.h>

/ {
	compatible = "fsl,ls1012a";
	interrupt-parent = <&gic>;
	#address-cells = <2>;
	#size-cells = <2>;

	aliases {
		crypto = &crypto;
		rtc1 = &ftm_alarm0;
		rtic-a = &rtic_a;
		rtic-b = &rtic_b;
		rtic-c = &rtic_c;
		rtic-d = &rtic_d;
		sec-mon = &sec_mon;
	};

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

		cpu0: cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-a53";
			reg = <0x0>;
			clocks = <&clockgen QORIQ_CLK_CMUX 0>;
			#cooling-cells = <2>;
			cpu-idle-states = <&CPU_PH20>;
		};
	};

	idle-states {
		/*
		 * PSCI node is not added default, U-boot will add missing
		 * parts if it determines to use PSCI.
		 */
		entry-method = "psci";

		CPU_PH20: cpu-ph20 {
			compatible = "arm,idle-state";
			idle-state-name = "PH20";
			arm,psci-suspend-param = <0x0>;
			entry-latency-us = <1000>;
			exit-latency-us = <1000>;
			min-residency-us = <3000>;
		};
	};

	sysclk: sysclk {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <125000000>;
		clock-output-names = "sysclk";
	};

	coreclk: coreclk {
		compatible = "fixed-clock";
		#clock-cells = <0>;

Annotation

Implementation Notes