arch/arm64/boot/dts/freescale/imx8ulp.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/freescale/imx8ulp.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/freescale/imx8ulp.dtsi
Extension
.dtsi
Size
28827 bytes
Lines
947
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)
/*
 * Copyright 2021 NXP
 */

#include <dt-bindings/clock/imx8ulp-clock.h>
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/power/imx8ulp-power.h>
#include <dt-bindings/thermal/thermal.h>

#include "imx8ulp-pinfunc.h"

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

	aliases {
		ethernet0 = &fec;
		gpio0 = &gpiod;
		gpio1 = &gpioe;
		gpio2 = &gpiof;
		mmc0 = &usdhc0;
		mmc1 = &usdhc1;
		mmc2 = &usdhc2;
		serial0 = &lpuart4;
		serial1 = &lpuart5;
		serial2 = &lpuart6;
		serial3 = &lpuart7;
		spi0 = &lpspi4;
		spi1 = &lpspi5;
	};

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

		A35_0: cpu@0 {
			device_type = "cpu";
			compatible = "arm,cortex-a35";
			reg = <0x0 0x0>;
			enable-method = "psci";
			next-level-cache = <&A35_L2>;
			cpu-idle-states = <&cpu_sleep>;
		};

		A35_1: cpu@1 {
			device_type = "cpu";
			compatible = "arm,cortex-a35";
			reg = <0x0 0x1>;
			enable-method = "psci";
			next-level-cache = <&A35_L2>;
			cpu-idle-states = <&cpu_sleep>;
		};

		A35_L2: l2-cache0 {
			compatible = "cache";
			cache-level = <2>;
			cache-unified;
		};

		idle-states {
			entry-method = "psci";

			cpu_sleep: cpu-sleep {
				compatible = "arm,idle-state";
				arm,psci-suspend-param = <0x0>;
				local-timer-stop;
				entry-latency-us = <1000>;

Annotation

Implementation Notes