xref: /freebsd/sys/contrib/device-tree/Bindings/hwmon/nsa320-mcu.txt (revision 19fae0f66023a97a9b464b3beeeabb2081f575b3)
1Bindings for the fan / temperature monitor microcontroller used on
2the Zyxel NSA 320 and several subsequent models.
3
4Required properties:
5- compatible	: "zyxel,nsa320-mcu"
6- data-gpios	: The GPIO pin connected to the data line on the MCU
7- clk-gpios	: The GPIO pin connected to the clock line on the MCU
8- act-gpios	: The GPIO pin connected to the active line on the MCU
9
10Example:
11
12	hwmon {
13		compatible = "zyxel,nsa320-mcu";
14		pinctrl-0 = <&pmx_mcu_data &pmx_mcu_clk &pmx_mcu_act>;
15		pinctrl-names = "default";
16
17		data-gpios = <&gpio0 14 GPIO_ACTIVE_HIGH>;
18		clk-gpios = <&gpio0 16 GPIO_ACTIVE_HIGH>;
19		act-gpios = <&gpio0 17 GPIO_ACTIVE_LOW>;
20	};
21