arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433-pcb-12-10.dtso

Source file repositories/reference/linux-study-clean/arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433-pcb-12-10.dtso

File Facts

System
Linux kernel
Corpus path
arch/arm64/boot/dts/rockchip/rk3568-qnap-ts433-pcb-12-10.dtso
Extension
.dtso
Size
3401 bytes
Lines
152
Domain
Architecture Layer
Bucket
arch/arm64
Inferred role
Architecture Layer: arch/arm64
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-later OR MIT)
/*
 * Device tree overlay for TS433 board PCBs-12-10 revision.
 *
 * Copyright (C) 2025 Heiko Stuebner <heiko@sntech.de>
 */

/dts-v1/;
/plugin/;

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/rockchip.h>

&{/} {
	/*
	 * The default hardware-state of this gpio causes the drive
	 * to be already running when entering the kernel.
	 * regulator-boot-on is needed to prevent one additional
	 * power-cycle on the drive.
	 *
	 * With regulator-boot-on we get the expected 1 cycle
	 * per boot, without it we end up with 2 cycles as seen
	 * via smartctl.
	 */
	hdd1_pwr: regulator-hdd1-power {
		compatible = "regulator-fixed";
		gpio = <&gpio0 RK_PC2 GPIO_ACTIVE_LOW>;
		pinctrl-names = "default";
		pinctrl-0 = <&hdd1_power_pin>;
		regulator-name = "hdd1-power";
		regulator-boot-on;
		vin-supply = <&dc_12v>;
	};

	hdd2_pwr: regulator-hdd2-power {
		compatible = "regulator-fixed";
		gpio = <&gpio0 RK_PC3 GPIO_ACTIVE_LOW>;
		pinctrl-names = "default";
		pinctrl-0 = <&hdd2_power_pin>;
		regulator-name = "hdd2-power";
		regulator-boot-on;
		vin-supply = <&dc_12v>;
	};

	/*
	 * HDD3+4 are connected to ports of the PCIe SATA controller.
	 * Currently there is no way to attach those, so keep them
	 * always on.
	 */
	hdd3_pwr: regulator-hdd3-power {
		compatible = "regulator-fixed";
		gpio = <&gpio0 RK_PC4 GPIO_ACTIVE_LOW>;
		pinctrl-names = "default";
		pinctrl-0 = <&hdd3_power_pin>;
		regulator-name = "hdd3-power";
		regulator-always-on;
		regulator-boot-on;
		vin-supply = <&dc_12v>;
	};

	hdd4_pwr: regulator-hdd4-power {
		compatible = "regulator-fixed";
		gpio = <&gpio0 RK_PC5 GPIO_ACTIVE_LOW>;
		pinctrl-names = "default";
		pinctrl-0 = <&hdd4_power_pin>;
		regulator-name = "hdd4-power";
		regulator-always-on;
		regulator-boot-on;
		vin-supply = <&dc_12v>;
	};

Annotation

Implementation Notes