arch/arm/boot/dts/arm/vexpress-v2m-rs1.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/arm/vexpress-v2m-rs1.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/arm/vexpress-v2m-rs1.dtsi
Extension
.dtsi
Size
13245 bytes
Lines
495
Domain
Architecture Layer
Bucket
arch/arm
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
/*
 * ARM Ltd. Versatile Express
 *
 * Motherboard Express uATX
 * V2M-P1
 *
 * HBI-0190D
 *
 * RS1 memory map ("ARM Cortex-A Series memory map" in the board's
 * Technical Reference Manual)
 *
 * WARNING! The hardware described in this file is independent from the
 * original variant (vexpress-v2m.dtsi), but there is a strong
 * correspondence between the two configurations.
 *
 * TAKE CARE WHEN MAINTAINING THIS FILE TO PROPAGATE ANY RELEVANT
 * CHANGES TO vexpress-v2m.dtsi!
 */
#include <dt-bindings/interrupt-controller/arm-gic.h>

/ {
	v2m_fixed_3v3: regulator-3v3 {
		compatible = "regulator-fixed";
		regulator-name = "3V3";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
	};

	v2m_clk24mhz: clock-24000000 {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <24000000>;
		clock-output-names = "v2m:clk24mhz";
	};

	v2m_refclk1mhz: clock-1000000 {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <1000000>;
		clock-output-names = "v2m:refclk1mhz";
	};

	v2m_refclk32khz: clock-32768 {
		compatible = "fixed-clock";
		#clock-cells = <0>;
		clock-frequency = <32768>;
		clock-output-names = "v2m:refclk32khz";
	};

	leds {
		compatible = "gpio-leds";

		led-1 {
			label = "v2m:green:user1";
			gpios = <&v2m_led_gpios 0 0>;
			linux,default-trigger = "heartbeat";
		};

		led-2 {
			label = "v2m:green:user2";
			gpios = <&v2m_led_gpios 1 0>;
			linux,default-trigger = "disk-activity";
		};

		led-3 {
			label = "v2m:green:user3";
			gpios = <&v2m_led_gpios 2 0>;
			linux,default-trigger = "cpu0";

Annotation

Implementation Notes