arch/arm/boot/dts/samsung/exynos5250-snow-common.dtsi

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/samsung/exynos5250-snow-common.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/samsung/exynos5250-snow-common.dtsi
Extension
.dtsi
Size
15394 bytes
Lines
715
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
/*
 * Google Snow board device tree source
 *
 * Copyright (c) 2012 Google, Inc
 */

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/clock/maxim,max77686.h>
#include <dt-bindings/interrupt-controller/irq.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/sound/samsung-i2s.h>
#include "exynos5250.dtsi"

/ {
	aliases {
		i2c104 = &i2c_104;
		mmc0 = &mmc_0; /* eMMC */
		mmc1 = &mmc_2; /* SD */
		mmc2 = &mmc_3; /* WiFi */
	};

	memory@40000000 {
		device_type = "memory";
		reg = <0x40000000 0x80000000>;
	};

	chosen {
		bootargs = "console=tty1";
		stdout-path = "serial3:115200n8";
	};

	gpio-keys {
		compatible = "gpio-keys";
		pinctrl-names = "default";
		pinctrl-0 = <&power_key_irq &lid_irq>;

		power-key {
			label = "Power";
			gpios = <&gpx1 3 GPIO_ACTIVE_LOW>;
			linux,code = <KEY_POWER>;
			wakeup-source;
		};

		lid-switch {
			label = "Lid";
			gpios = <&gpx3 5 GPIO_ACTIVE_LOW>;
			linux,input-type = <5>; /* EV_SW */
			linux,code = <0>; /* SW_LID */
			debounce-interval = <1>;
			wakeup-source;
		};
	};

	vbat: vbat-fixed-regulator {
		compatible = "regulator-fixed";
		regulator-name = "vbat-supply";
		regulator-boot-on;
	};

	i2c-arbitrator {
		compatible = "i2c-arb-gpio-challenge";
		i2c-parent = <&i2c_4>;

		our-claim-gpios = <&gpf0 3 GPIO_ACTIVE_LOW>;
		their-claim-gpios = <&gpe0 4 GPIO_ACTIVE_LOW>;
		slew-delay-us = <10>;
		wait-retry-us = <3000>;
		wait-free-us = <50000>;

Annotation

Implementation Notes