arch/arm/boot/dts/microchip/at91sam9g20ek_common.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/microchip/at91sam9g20ek_common.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/microchip/at91sam9g20ek_common.dtsi
Extension
.dtsi
Size
6101 bytes
Lines
310
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-only
/*
 * at91sam9g20ek_common.dtsi - Device Tree file for Atmel at91sam9g20ek board
 *
 * Copyright (C) 2012 Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
 */
#include "at91sam9g20.dtsi"
#include <dt-bindings/input/input.h>

/ {

	chosen {
		bootargs = "mem=64M root=/dev/mtdblock5 rw rootfstype=ubifs";
		stdout-path = "serial0:115200n8";
	};

	memory@20000000 {
		reg = <0x20000000 0x4000000>;
	};

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

		main_xtal {
			clock-frequency = <18432000>;
		};
	};

	ahb {
		apb {
			pinctrl@fffff400 {
				board {
					pinctrl_pck0_as_mck: pck0_as_mck {
						atmel,pins =
							<AT91_PIOC 1 AT91_PERIPH_B AT91_PINCTRL_NONE>;	/* PC1 periph B */
					};

				};

				usb1 {
					pinctrl_usb1_vbus_gpio: usb1_vbus_gpio {
						atmel,pins =
							<AT91_PIOC 5 AT91_PERIPH_GPIO AT91_PINCTRL_DEGLITCH>;	/* PC5 GPIO */
					};
				};

				mmc0_slot1 {
					pinctrl_board_mmc0_slot1: mmc0_slot1-board {
						atmel,pins =
							<AT91_PIOC 9 AT91_PERIPH_GPIO AT91_PINCTRL_PULL_UP_DEGLITCH>;	/* PC9 gpio CD pin pull up and deglitch */
					};
				};
			};

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

			tcb0: timer@fffa0000 {
				timer@0 {
					compatible = "atmel,tcb-timer";
					reg = <0>, <1>;
				};

				timer@2 {
					compatible = "atmel,tcb-timer";
					reg = <2>;
				};

Annotation

Implementation Notes