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.
- CPU and platform-specific kernel glue: boot entry, traps, syscall entry, interrupts, page tables, context switch, and low-level barriers.
Dependency Surface
rk3399-nanopi4.dtsi
Detected Declarations
- No top-level syscall, struct, function, initcall, or export declaration detected by the generator.
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
- Immediate include surface: `rk3399-nanopi4.dtsi`.
- Atlas domain: Architecture Layer / arch/arm64.
- Implementation status: atlas-only.
Implementation Notes
- This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
- Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
- Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.