arch/arm/boot/dts/broadcom/bcm47081-buffalo-wzr-900dhp.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/broadcom/bcm47081-buffalo-wzr-900dhp.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/broadcom/bcm47081-buffalo-wzr-900dhp.dts
Extension
.dts
Size
2075 bytes
Lines
110
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 OR MIT
/*
 * Broadcom BCM470X / BCM5301X ARM platform code.
 * DTS for Buffalo WZR-900DHP
 *
 * Copyright (C) 2015 Rafał Miłecki <zajec5@gmail.com>
 */

/dts-v1/;

#include "bcm47081.dtsi"
#include "bcm5301x-nand-cs0-bch8.dtsi"

/ {
	compatible = "buffalo,wzr-900dhp", "brcm,bcm47081", "brcm,bcm4708";
	model = "Buffalo WZR-900DHP (BCM47081)";

	chosen {
		bootargs = "console=ttyS0,115200";
	};

	memory@0 {
		device_type = "memory";
		reg = <0x00000000 0x08000000>,
		      <0x88000000 0x08000000>;
	};

	spi {
		compatible = "spi-gpio";
		num-chipselects = <1>;
		sck-gpios = <&chipcommon 7 0>;
		mosi-gpios = <&chipcommon 4 0>;
		cs-gpios = <&chipcommon 6 0>;
		#address-cells = <1>;
		#size-cells = <0>;

		hc595: gpio_spi@0 {
			compatible = "fairchild,74hc595";
			reg = <0>;
			registers-number = <1>;
			spi-max-frequency = <100000>;

			gpio-controller;
			#gpio-cells = <2>;

		};
	};

	leds {
		compatible = "gpio-leds";

		led-usb {
			label = "bcm53xx:green:usb";
			gpios = <&hc595 0 GPIO_ACTIVE_HIGH>;
		};

		led-power0 {
			label = "bcm53xx:green:power";
			gpios = <&hc595 1 GPIO_ACTIVE_HIGH>;
			linux,default-trigger = "default-on";
		};

		led-power1 {
			label = "bcm53xx:red:power";
			gpios = <&hc595 2 GPIO_ACTIVE_HIGH>;
		};

		led-router0 {
			label = "bcm53xx:green:router";
			gpios = <&hc595 3 GPIO_ACTIVE_HIGH>;

Annotation

Implementation Notes