55 lines
1.3 KiB
YAML
55 lines
1.3 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/hwmon/zyxel,nsa320-mcu.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: ZyXEL NSA320 MCU
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maintainers:
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- Adam Baker <linux@baker-net.org.uk>
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- Guenter Roeck <linux@roeck-us.net>
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description:
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The ZyXEL NSA320 uses a dedicated microcontroller to manage system-critical
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functions like fan speed and power monitoring. It is connected to the SoC
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via a GPIO-based serial protocol.
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properties:
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compatible:
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const: zyxel,nsa320-mcu
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data-gpios:
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maxItems: 1
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description: GPIO pin connected to the data line on the MCU.
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clk-gpios:
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maxItems: 1
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description: GPIO pin connected to the clock line on the MCU.
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act-gpios:
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maxItems: 1
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description: GPIO pin connected to the active line on the MCU.
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required:
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- compatible
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- data-gpios
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- clk-gpios
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- act-gpios
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additionalProperties: false
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examples:
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- |
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#include <dt-bindings/gpio/gpio.h>
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hwmon {
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compatible = "zyxel,nsa320-mcu";
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pinctrl-0 = <&pmx_mcu_data &pmx_mcu_clk &pmx_mcu_act>;
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pinctrl-names = "default";
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data-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
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clk-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
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act-gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
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};
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