mirror of
https://github.com/torvalds/linux.git
synced 2024-12-27 21:33:00 +00:00
853d5e4b9a
It should be "#cooling-cells" instead of "cooling-cells". Fix it. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> [groeck: Updated subject] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
41 lines
1.2 KiB
Plaintext
41 lines
1.2 KiB
Plaintext
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.
|
|
- #cooling-cells: If used as a cooling device, must be <2>
|
|
Also see: Documentation/devicetree/bindings/thermal/thermal.txt
|
|
min and max states are derived from the speed-map of the fan.
|
|
|
|
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>;
|
|
};
|
|
gpio_fan_cool: gpio_fan {
|
|
compatible = "gpio-fan";
|
|
gpios = <&gpio2 14 1
|
|
&gpio2 13 1>;
|
|
gpio-fan,speed-map = <0 0>,
|
|
<3000 1>,
|
|
<6000 2>;
|
|
alarm-gpios = <&gpio2 15 1>;
|
|
#cooling-cells = <2>; /* min followed by max */
|
|
};
|