An array of method objects used to detect the fan's present state. Each supported method requires its own set of attributes to be provided.
Method type:
Requires an array of sensors of each fan tach D-Bus sensor name to be used to determine fan presence. This is the name of the fan tach sensor located under the /xyz/openbmc_project/sensors/fan_tach/ D-Bus path.
"type": "tach", "sensors": [ "fan0_0" ]
Detects fans with dedicated GPIOs using Linux gpio-keys device tree bindings, where the event number is provided via the key attribute.
"type": "gpio", "key": 1, "physpath": "/sys/devices/platform/ahb/ahb:apb/ahb:apb:bus@1e78a000/1e78a000.i2c-bus/i2c-1/1-0001", "devpath": "/dev/input/by-path/platform-gpio-keys-polled-event"