Commit 3f674e74 authored Nov 07, 2024 by Heiko Stuebner Committed by Lee Jones Dec 17, 2024

dt-bindings: mfd: Add binding for qnap,ts433-mcu devices



These MCUs can be found in network attached storage devices made by QNAP.
They are connected to a serial port of the host device and provide
functionality like LEDs, power-control and temperature monitoring.

LEDs, buttons, etc are all elements of the MCU firmware itself, so don't
need devicetree input, though the fan gets its cooling settings from
a fan-0 subnode.

A binding for the LEDs for setting the linux-default-trigger may come
later, once all the LEDs are understood and ATA controllers actually
can address individual port-LEDs, but are really optional.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20241107114712.538976-4-heiko@sntech.de


Signed-off-by: Lee Jones <lee@kernel.org>

parent fa52c04d

Documentation/devicetree/bindings/mfd/qnap,ts433-mcu.yaml

0 → 100644

+42 −0

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		# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
		%YAML 1.2
		---
		$id: http://devicetree.org/schemas/mfd/qnap,ts433-mcu.yaml#
		$schema: http://devicetree.org/meta-schemas/core.yaml#

		title: QNAP NAS on-board Microcontroller

		maintainers:
		- Heiko Stuebner <heiko@sntech.de>

		description:
		QNAP embeds a microcontroller on their NAS devices adding system feature
		as PWM Fan control, additional LEDs, power button status and more.

		properties:
		compatible:
		enum:
		- qnap,ts433-mcu

		patternProperties:
		"^fan-[0-9]+$":
		$ref: /schemas/hwmon/fan-common.yaml#
		unevaluatedProperties: false

		required:
		- compatible

		additionalProperties: false

		examples:
		- \|
		uart {
		mcu {
		compatible = "qnap,ts433-mcu";

		fan-0 {
		#cooling-cells = <2>;
		cooling-levels = <0 64 89 128 166 204 221 238>;
		};
		};
		};