arch/arm/boot/dts/intel/ixp/intel-ixp42x-usrobotics-usr8200.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/intel/ixp/intel-ixp42x-usrobotics-usr8200.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/intel/ixp/intel-ixp42x-usrobotics-usr8200.dts
Extension
.dts
Size
6128 bytes
Lines
252
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: ISC
/*
 * Device Tree file for the USRobotics USR8200 firewall
 * VPN and NAS. Based on know-how from Peter Denison.
 *
 * This machine is based on IXP422, the USR internal codename
 * is "Jeeves".
 */

/dts-v1/;

#include "intel-ixp42x.dtsi"
#include <dt-bindings/input/input.h>

/ {
	model = "USRobotics USR8200";
	compatible = "usr,usr8200", "intel,ixp42x";
	#address-cells = <1>;
	#size-cells = <1>;

	memory@0 {
		device_type = "memory";
		reg = <0x00000000 0x4000000>;
	};

	chosen {
		bootargs = "console=ttyS0,115200n8";
		stdout-path = "uart1:115200n8";
	};

	aliases {
		/* These are switched around */
		serial0 = &uart1;
		serial1 = &uart0;
	};

	leds {
		compatible = "gpio-leds";
		ieee1394_led: led-1394 {
			label = "usr8200:green:1394";
			gpios = <&gpio0 0 GPIO_ACTIVE_LOW>;
			default-state = "off";
		};
		usb1_led: led-usb1 {
			label = "usr8200:green:usb1";
			gpios = <&gpio0 1 GPIO_ACTIVE_LOW>;
			default-state = "off";
		};
		usb2_led: led-usb2 {
			label = "usr8200:green:usb2";
			gpios = <&gpio0 2 GPIO_ACTIVE_LOW>;
			default-state = "off";
		};
		wireless_led: led-wireless {
			/*
			 * This LED is mounted inside the case but cannot be
			 * seen from the outside: probably USR planned at one
			 * point for the device to have a wireless card, then
			 * changed their mind and didn't mount it, leaving the
			 * LED in place.
			 */
			label = "usr8200:green:wireless";
			gpios = <&gpio0 3 GPIO_ACTIVE_LOW>;
			default-state = "off";
		};
		pwr_led: led-pwr {
			label = "usr8200:green:pwr";
			gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
			default-state = "on";
			linux,default-trigger = "heartbeat";

Annotation

Implementation Notes