arch/arm/boot/dts/amlogic/meson8b-ec100.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/amlogic/meson8b-ec100.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/amlogic/meson8b-ec100.dts
Extension
.dts
Size
10150 bytes
Lines
480
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 MIT)
/*
 * Copyright (c) 2018 Martin Blumenstingl <martin.blumenstingl@googlemail.com>.
 */

/dts-v1/;

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>

#include "meson8b.dtsi"

/ {
	model = "Endless Computers Endless Mini";
	compatible = "endless,ec100", "amlogic,meson8b";

	aliases {
		serial0 = &uart_AO;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

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

	emmc_pwrseq: emmc-pwrseq {
		compatible = "mmc-pwrseq-emmc";
		reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
	};

	gpio-keys {
		compatible = "gpio-keys-polled";
		poll-interval = <100>;

		pal-switch {
			label = "pal";
			linux,input-type = <EV_SW>;
			linux,code = <KEY_SWITCHVIDEOMODE>;
			gpios = <&gpio GPIOH_7 GPIO_ACTIVE_LOW>;
		};

		ntsc-switch {
			label = "ntsc";
			linux,input-type = <EV_SW>;
			linux,code = <KEY_SWITCHVIDEOMODE>;
			gpios = <&gpio GPIOH_8 GPIO_ACTIVE_HIGH>;
		};

		power-button {
			label = "power";
			linux,code = <KEY_POWER>;
			gpios = <&gpio GPIOH_9 GPIO_ACTIVE_LOW>;
		};
	};

	gpio-poweroff {
		compatible = "gpio-poweroff";
		/*
		 * shutdown is managed by the EC (embedded micro-controller)
		 * which is configured through GPIOAO_2 (poweroff GPIO) and
		 * GPIOAO_7 (power LED, which has to go LOW as well).
		 */
		gpios = <&gpio_ao GPIOAO_2 GPIO_ACTIVE_LOW>;
		timeout-ms = <20000>;
	};

Annotation

Implementation Notes