arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/amlogic/meson-gxbb-p200.dts
Extension
.dts
Size
3166 bytes
Lines
163
Domain
Architecture Layer
Bucket
arch/arm64
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) 2016 Andreas Färber
 * Copyright (c) 2016 BayLibre, Inc.
 * Author: Kevin Hilman <khilman@kernel.org>
 */

/dts-v1/;

#include "meson-gxbb-p20x.dtsi"
#include <dt-bindings/input/input.h>
#include <dt-bindings/sound/meson-aiu.h>

/ {
	compatible = "amlogic,p200", "amlogic,meson-gxbb";
	model = "Amlogic Meson GXBB P200 Development Board";

	spdif_dit: audio-codec-0 {
		#sound-dai-cells = <0>;
		compatible = "linux,spdif-dit";
		sound-name-prefix = "DIT";
	};

	avdd18_usb_adc: regulator-avdd18-usb-adc {
		compatible = "regulator-fixed";
		regulator-name = "AVDD18_USB_ADC";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
	};

	keys {
		compatible = "adc-keys";
		io-channels = <&saradc 0>;
		io-channel-names = "buttons";
		keyup-threshold-microvolt = <1800000>;

		button-home {
			label = "Home";
			linux,code = <KEY_HOME>;
			press-threshold-microvolt = <900000>; /* 50% */
		};

		button-esc {
			label = "Esc";
			linux,code = <KEY_ESC>;
			press-threshold-microvolt = <684000>; /* 38% */
		};

		button-up {
			label = "Volume Up";
			linux,code = <KEY_VOLUMEUP>;
			press-threshold-microvolt = <468000>; /* 26% */
		};

		button-down {
			label = "Volume Down";
			linux,code = <KEY_VOLUMEDOWN>;
			press-threshold-microvolt = <252000>; /* 14% */
		};

		button-menu {
			label = "Menu";
			linux,code = <KEY_MENU>;
			press-threshold-microvolt = <0>; /* 0% */
		};
	};

	sound {
		compatible = "amlogic,gx-sound-card";
		model = "P200";

Annotation

Implementation Notes