arch/arm/boot/dts/microchip/at91-wb45n.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/microchip/at91-wb45n.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/microchip/at91-wb45n.dtsi
Extension
.dtsi
Size
2917 bytes
Lines
167
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
/*
 * at91-wb45n.dtsi - Device Tree file for WB45NBT board
 *
 *  Copyright (C) 2018 Laird
 *
 */

#include "at91sam9g25.dtsi"

/ {
	model = "Laird Workgroup Bridge 45N - Atmel AT91SAM (dt)";
	compatible = "laird,wb45n", "laird,wbxx", "atmel,at91sam9x5", "atmel,at91sam9";

	chosen {
		bootargs = "ubi.mtd=6 root=ubi0:rootfs rootfstype=ubifs rw";
		stdout-path = "serial0:115200n8";
	};

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

	atheros {
		compatible = "atheros,ath6kl";
		atheros,board-id = "SD32";
	};
};

&reset_controller {
	compatible = "atmel,sama5d3-rstc";
};

&shutdown_controller {
	atmel,wakeup-mode = "low";
};

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

&main_xtal {
	clock-frequency = <12000000>;
};

&ebi {
	status = "okay";
	nand_controller: nand-controller {
		pinctrl-0 = <&pinctrl_nand_cs &pinctrl_nand_rb &pinctrl_nand_oe_we>;
		pinctrl-names = "default";
		status = "okay";

		nand@3 {
			reg = <0x3 0x0 0x800000>;
			rb-gpios = <&pioD 5 GPIO_ACTIVE_HIGH>;
			cs-gpios = <&pioD 4 GPIO_ACTIVE_HIGH>;
			nand-bus-width = <8>;
			nand-ecc-mode = "hw";
			nand-ecc-strength = <4>;
			nand-ecc-step-size = <512>;
			nand-on-flash-bbt;
			label = "atmel_nand";

			partitions {
				compatible = "fixed-partitions";
				#address-cells = <1>;
				#size-cells = <1>;

				at91bootstrap@0 {
					label = "at91bs";

Annotation

Implementation Notes