arch/arm/boot/dts/microchip/at91sam9g20ek.dts

File Facts

System

Linux kernel

Corpus path

arch/arm/boot/dts/microchip/at91sam9g20ek.dts

Extension

.dts

Size

593 bytes

Lines

29

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.

• CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.

Dependency Surface

• at91sam9g20ek_common.dtsi

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

// SPDX-License-Identifier: GPL-2.0-only
/*
 * at91sam9g20ek.dts - Device Tree file for Atmel at91sam9g20ek board
 *
 * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
 */
/dts-v1/;
#include "at91sam9g20ek_common.dtsi"

/ {
	model = "Atmel at91sam9g20ek";
	compatible = "atmel,at91sam9g20ek", "atmel,at91sam9g20", "atmel,at91sam9";

	leds {
		compatible = "gpio-leds";

		led-ds1 {
			label = "ds1";
			gpios = <&pioA 9 GPIO_ACTIVE_HIGH>;
			linux,default-trigger = "heartbeat";
		};

		led-ds5 {
			label = "ds5";
			gpios = <&pioA 6 GPIO_ACTIVE_LOW>;
		};
	};
};

Annotation

• Immediate include surface: `at91sam9g20ek_common.dtsi`.
• Atlas domain: Architecture Layer / arch/arm.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.