arch/arm/boot/dts/intel/ixp/intel-ixp42x-freecom-fsg-3.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/intel/ixp/intel-ixp42x-freecom-fsg-3.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/intel/ixp/intel-ixp42x-freecom-fsg-3.dts
Extension
.dts
Size
5397 bytes
Lines
220
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 Freecom FSG-3 router.
 * This machine is based on IXP425.
 * This device tree is inspired by the board file by Rod Whitby.
 */

/dts-v1/;

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

/ {
	model = "Freecom FSG-3";
	compatible = "freecom,fsg-3", "intel,ixp42x";
	#address-cells = <1>;
	#size-cells = <1>;

	memory@0 {
		/* 64 MB memory */
		device_type = "memory";
		reg = <0x00000000 0x4000000>;
	};

	chosen {
		/* Boot from the first partition on the hard drive */
		bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootfstype=ext4 rootwait";
		stdout-path = "uart0:115200n8";
	};

	aliases {
		serial0 = &uart0;
	};

	gpio_keys {
		compatible = "gpio-keys";

		button-sync {
			wakeup-source;
			/* Closest approximation of what the key should do */
			linux,code = <KEY_CONNECT>;
			label = "sync";
			gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
		};
		button-reset {
			wakeup-source;
			linux,code = <KEY_RESTART>;
			label = "reset";
			gpios = <&gpio0 9 GPIO_ACTIVE_LOW>;
		};
		button-usb {
			wakeup-source;
			/* Unplug USB, closest approximation of what the key should do */
			linux,code = <KEY_EJECTCD>;
			label = "usb";
			gpios = <&gpio0 10 GPIO_ACTIVE_LOW>;
		};
	};

	i2c {
		compatible = "i2c-gpio";
		sda-gpios = <&gpio0 12 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
		scl-gpios = <&gpio0 13 (GPIO_ACTIVE_HIGH|GPIO_OPEN_DRAIN)>;
		#address-cells = <1>;
		#size-cells = <0>;

		hwmon@28 {
			/*
			 * Temperature sensor and fan control chip.
			 *

Annotation

Implementation Notes