arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/microchip/at91-sam9x75_curiosity.dts
Extension
.dts
Size
8290 bytes
Lines
375
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+ OR MIT)
/*
 * at91-sam9x75_curiosity.dts - Device Tree file for Microchip SAM9X75 Curiosity board
 *
 * Copyright (C) 2023 Microchip Technology Inc. and its subsidiaries
 *
 * Author: Varshini Rajendran <varshini.rajendran@microchip.com>
 */
/dts-v1/;
#include "sam9x7.dtsi"
#include <dt-bindings/input/input.h>

/ {
	model = "Microchip SAM9X75 Curiosity";
	compatible = "microchip,sam9x75-curiosity", "microchip,sam9x7", "atmel,at91sam9";

	aliases {
		i2c0 = &i2c6;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	gpio-keys {
		compatible = "gpio-keys";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_key_gpio_default>;

		button-user {
			label = "USER";
			gpios = <&pioC 9 GPIO_ACTIVE_LOW>;
			linux,code = <KEY_0>;
			wakeup-source;
		};
	};

	led-controller {
		compatible = "gpio-leds";

		led_red: led-red {
			label = "red";
			gpios = <&pioC 14 GPIO_ACTIVE_HIGH>;
			pinctrl-0 = <&pinctrl_red_led_gpio_default>;
		};

		led_green: led-green {
			label = "green";
			gpios = <&pioC 21 GPIO_ACTIVE_HIGH>;
			pinctrl-0 = <&pinctrl_green_led_gpio_default>;
		};

		led_blue: led-blue {
			label = "blue";
			gpios = <&pioC 20 GPIO_ACTIVE_HIGH>;
			pinctrl-0 = <&pinctrl_blue_led_gpio_default>;
			linux,default-trigger = "heartbeat";
		};
	};

	memory@20000000 {
		reg = <0x20000000 0x10000000>;
		device_type = "memory";
	};
};

&classd {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_classd_default>;
	atmel,pwm-type = "diff";

Annotation

Implementation Notes