arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/amlogic/meson-gx-p23x-q20x.dtsi
Extension
.dtsi
Size
6199 bytes
Lines
323
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 Endless Computers, Inc.
 * Author: Carlo Caione <carlo@endlessm.com>
 */

/* Common DTSI for same Amlogic Q200/Q201 and P230/P231 boards using either
 * the pin-compatible S912 (GXM) or S905D (GXL) SoCs.
 */

#include <dt-bindings/sound/meson-aiu.h>

/ {
	aliases {
		serial0 = &uart_AO;
		ethernet0 = &ethmac;
	};

	dio2133: analog-amplifier {
		compatible = "simple-audio-amplifier";
		sound-name-prefix = "AU2";
		VCC-supply = <&hdmi_5v>;
		enable-gpios = <&gpio GPIOH_5 GPIO_ACTIVE_HIGH>;
	};

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

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

	memory@0 {
		device_type = "memory";
		reg = <0x0 0x0 0x0 0x80000000>;
	};

	hdmi_5v: regulator-hdmi-5v {
		compatible = "regulator-fixed";

		regulator-name = "HDMI_5V";
		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5000000>;

		gpio = <&gpio GPIOH_3 GPIO_ACTIVE_HIGH>;
		enable-active-high;
		regulator-always-on;
	};

	vddio_ao18: regulator-vddio-ao18 {
		compatible = "regulator-fixed";
		regulator-name = "VDDIO_AO18";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
	};

	vddio_boot: regulator-vddio-boot {
		compatible = "regulator-fixed";
		regulator-name = "VDDIO_BOOT";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
	};

	vddao_3v3: regulator-vddao-3v3 {
		compatible = "regulator-fixed";
		regulator-name = "VDDAO_3V3";
		regulator-min-microvolt = <3300000>;

Annotation

Implementation Notes