arch/arm/boot/dts/microchip/at91sam9n12ek.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/microchip/at91sam9n12ek.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/microchip/at91sam9n12ek.dts
Extension
.dts
Size
5771 bytes
Lines
286
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-later
/*
 * at91sam9n12ek.dts - Device Tree file for AT91SAM9N12-EK board
 *
 *  Copyright (C) 2012 Atmel,
 *                2012 Hong Xu <hong.xu@atmel.com>
 */
/dts-v1/;
#include "at91sam9n12.dtsi"

/ {
	model = "Atmel AT91SAM9N12-EK";
	compatible = "atmel,at91sam9n12ek", "atmel,at91sam9n12", "atmel,at91sam9";

	chosen {
		bootargs = "root=/dev/mtdblock1 rw rootfstype=jffs2";
		stdout-path = "serial0:115200n8";
	};

	memory@20000000 {
		reg = <0x20000000 0x8000000>;
	};

	clocks {
		slow_xtal {
			clock-frequency = <32768>;
		};

		main_xtal {
			clock-frequency = <16000000>;
		};
	};

	ahb {
		apb {
			dbgu: serial@fffff200 {
				status = "okay";
			};

			ssc0: ssc@f0010000 {
				status = "okay";
			};

			tcb0: timer@f8008000 {
				timer@0 {
					compatible = "atmel,tcb-timer";
					reg = <0>;
				};

				timer@1 {
					compatible = "atmel,tcb-timer";
					reg = <1>;
				};
			};

			i2c0: i2c@f8010000 {
				status = "okay";

				wm8904: codec@1a {
					compatible = "wlf,wm8904";
					reg = <0x1a>;
					clocks = <&pmc PMC_TYPE_SYSTEM 8>;
					clock-names = "mclk";
				};

				qt1070: keyboard@1b {
					compatible = "qt1070";
					reg = <0x1b>;
					interrupt-parent = <&pioA>;
					interrupts = <2 IRQ_TYPE_EDGE_FALLING>;

Annotation

Implementation Notes