kernel/Documentation/devicetree/bindings/hwmon/gpio-fan.txt
.. .. @@ -12,7 +12,8 @@ 12 12 - alarm-gpios: This pin going active indicates something is wrong with 13 13 the fan, and a udev event will be fired. 14 14 - #cooling-cells: If used as a cooling device, must be <2> 15 - Also see: Documentation/devicetree/bindings/thermal/thermal.txt15 + Also see:16 + Documentation/devicetree/bindings/thermal/thermal-cooling-devices.yaml16 17 min and max states are derived from the speed-map of the fan. 17 18 18 19 Note: At least one the "gpios" or "alarm-gpios" properties must be set.