arch/arm/boot/dts/samsung/exynos4412-itop-elite.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/samsung/exynos4412-itop-elite.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/samsung/exynos4412-itop-elite.dts
Extension
.dts
Size
4919 bytes
Lines
235
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
/*
 * TOPEET's Exynos4412 based itop board device tree source
 *
 * Copyright (c) 2016 SUMOMO Computer Association
 *			https://www.sumomo.mobi
 *			Randy Li <ayaka@soulik.info>
 *
 * Device tree source file for TOPEET iTop Exynos 4412 core board
 * which is based on Samsung's Exynos4412 SoC.
 */

/dts-v1/;
#include <dt-bindings/leds/common.h>
#include <dt-bindings/pwm/pwm.h>
#include <dt-bindings/sound/samsung-i2s.h>
#include "exynos4412-itop-scp-core.dtsi"

/ {
	model = "TOPEET iTop 4412 Elite board based on Exynos4412";
	compatible = "topeet,itop4412-elite", "samsung,exynos4412", "samsung,exynos4";

	aliases {
		mmc1 = &sdhci_2;
	};

	chosen {
		bootargs = "root=/dev/mmcblk0p2 rw rootfstype=ext4 rootdelay=1 rootwait";
		stdout-path = "serial2:115200n8";
	};

	leds {
		compatible = "gpio-leds";

		led2 {
			function = LED_FUNCTION_HEARTBEAT;
			color = <LED_COLOR_ID_RED>;
			gpios = <&gpx1 0 GPIO_ACTIVE_HIGH>;
			default-state = "off";
			linux,default-trigger = "heartbeat";
		};

		led3 {
			label = "red:user";
			color = <LED_COLOR_ID_RED>;
			gpios = <&gpk1 1 GPIO_ACTIVE_HIGH>;
			default-state = "off";
		};
	};

	gpio-keys {
		compatible = "gpio-keys";

		key-home {
			label = "GPIO Key Home";
			linux,code = <KEY_HOME>;
			gpios = <&gpx1 1 GPIO_ACTIVE_LOW>;
		};

		key-back {
			label = "GPIO Key Back";
			linux,code = <KEY_BACK>;
			gpios = <&gpx1 2 GPIO_ACTIVE_LOW>;
		};

		key-sleep {
			label = "GPIO Key Sleep";
			linux,code = <KEY_POWER>;
			gpios = <&gpx3 3 GPIO_ACTIVE_LOW>;
		};

Annotation

Implementation Notes