arch/arm/boot/dts/allwinner/sun8i-h3-nanopi-duo2.dts

Source file repositories/reference/linux-study-clean/arch/arm/boot/dts/allwinner/sun8i-h3-nanopi-duo2.dts

File Facts

System
Linux kernel
Corpus path
arch/arm/boot/dts/allwinner/sun8i-h3-nanopi-duo2.dts
Extension
.dts
Size
3609 bytes
Lines
174
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) 2019 Karl Palsson <karlp@tweak.net.au>
 */

/dts-v1/;
#include "sun8i-h3.dtsi"
#include "sunxi-common-regulators.dtsi"

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

/ {
	model = "FriendlyARM NanoPi Duo2";
	compatible = "friendlyarm,nanopi-duo2", "allwinner,sun8i-h3";

	aliases {
		serial0 = &uart0;
	};

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

	leds {
		compatible = "gpio-leds";

		led-0 {
			label = "nanopi:red:pwr";
			gpios = <&r_pio 0 10 GPIO_ACTIVE_HIGH>; /* PL10 */
			default-state = "on";
		};

		led-1 {
			label = "nanopi:green:status";
			gpios = <&pio 0 10 GPIO_ACTIVE_HIGH>; /* PA10 */
		};
	};

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

		key-0 {
			label = "k1";
			linux,code = <BTN_0>;
			gpios = <&r_pio 0 3 GPIO_ACTIVE_LOW>; /* PL3 */
		};
	};

	reg_vdd_cpux: vdd-cpux-regulator {
		compatible = "regulator-gpio";
		regulator-name = "vdd-cpux";
		regulator-min-microvolt = <1100000>;
		regulator-max-microvolt = <1300000>;
		regulator-always-on;
		regulator-boot-on;
		regulator-ramp-delay = <50>; /* 4ms */

		enable-active-high;
		enable-gpios = <&r_pio 0 8 GPIO_ACTIVE_HIGH>; /* PL8 */
		gpios = <&r_pio 0 6 GPIO_ACTIVE_HIGH>; /* PL6 */
		gpios-states = <0x1>;
		states = <1100000 0>, <1300000 1>;
	};

	reg_vcc_dram: vcc-dram {
		compatible = "regulator-fixed";
		regulator-name = "vcc-dram";
		regulator-min-microvolt = <1500000>;
		regulator-max-microvolt = <1500000>;

Annotation

Implementation Notes