arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/rockchip/rk3399-nanopc-t4.dts
Extension
.dts
Size
2597 bytes
Lines
138
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)
/*
 * FriendlyElec NanoPC-T4 board device tree source
 *
 * Copyright (c) 2018 FriendlyElec Computer Tech. Co., Ltd.
 * (http://www.friendlyarm.com)
 *
 * Copyright (c) 2018 Collabora Ltd.
 */

/dts-v1/;
#include "rk3399-nanopi4.dtsi"

/ {
	model = "FriendlyElec NanoPC-T4";
	compatible = "friendlyarm,nanopc-t4", "rockchip,rk3399";

	vcc12v0_sys: regulator-vcc12v0-sys {
		compatible = "regulator-fixed";
		regulator-always-on;
		regulator-boot-on;
		regulator-max-microvolt = <12000000>;
		regulator-min-microvolt = <12000000>;
		regulator-name = "vcc12v0_sys";
	};

	vcc5v0_host0: regulator-vcc5v0-host0 {
		compatible = "regulator-fixed";
		regulator-always-on;
		regulator-boot-on;
		regulator-name = "vcc5v0_host0";
		vin-supply = <&vcc5v0_sys>;
	};

	adc-keys {
		compatible = "adc-keys";
		io-channels = <&saradc 1>;
		io-channel-names = "buttons";
		keyup-threshold-microvolt = <1800000>;
		poll-interval = <100>;

		button-recovery {
			label = "Recovery";
			linux,code = <KEY_VENDOR>;
			press-threshold-microvolt = <18000>;
		};
	};

	ir-receiver {
		compatible = "gpio-ir-receiver";
		gpios = <&gpio0 RK_PA6 GPIO_ACTIVE_LOW>;
		pinctrl-names = "default";
		pinctrl-0 = <&ir_rx>;
	};

	fan: pwm-fan {
		compatible = "pwm-fan";
		/*
		 * With 20KHz PWM and an EVERCOOL EC4007H12SA fan, these levels
		 * work out to 0, ~1200, ~3000, and 5000RPM respectively.
		 */
		cooling-levels = <0 12 18 255>;
		#cooling-cells = <2>;
		fan-supply = <&vcc12v0_sys>;
		pwms = <&pwm1 0 50000 0>;
	};
};

&cpu_thermal {
	trips {

Annotation

Implementation Notes