blob: f996d428f1323d65af6f20720ba33aa12020706c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
Bindings for fan connected to GPIO lines
Required properties:
- compatible : "gpio-fan"
Optional properties:
- gpios: Specifies the pins that map to bits in the control value,
ordered MSB-->LSB.
- gpio-fan,speed-map: A mapping of possible fan RPM speeds and the
control value that should be set to achieve them. This array
must have the RPM values in ascending order.
- alarm-gpios: This pin going active indicates something is wrong with
the fan, and a udev event will be fired.
Note: At least one the "gpios" or "alarm-gpios" properties must be set.
Examples:
gpio_fan {
compatible = "gpio-fan";
gpios = <&gpio1 14 1
&gpio1 13 1>;
gpio-fan,speed-map = <0 0
3000 1
6000 2>;
alarm-gpios = <&gpio1 15 1>;
};
|
