1bc4179e9SMatt Spinler# eeprom 2bc4179e9SMatt Spinler 3bc4179e9SMatt Spinler## Description 4a49e3f19SPatrick Williams 5a49e3f19SPatrick WilliamsSome fans have EEPROMs on them. In these cases, the `eeprom` JSON stanza can be 6a49e3f19SPatrick Williamsused to have the application re-bind the EEPROM driver to the EEPROM instance 7a49e3f19SPatrick Williamsafter a new fan is detected. This will trigger the EEPROM to be read by the 8a49e3f19SPatrick Williamsappropriate code if the platform is configured to do so. 9bc4179e9SMatt Spinler 10bc4179e9SMatt SpinlerThis is optional and only required if the above behavior is desired. 11bc4179e9SMatt Spinler 12bc4179e9SMatt Spinler## Keys 13a49e3f19SPatrick Williams 14a49e3f19SPatrick Williams- ["bus_address"](#bus_address) 15a49e3f19SPatrick Williams- ["driver_name"](#driver_name) 16a49e3f19SPatrick Williams- ["bind_delay_ms"](#bind_delay_ms) 17bc4179e9SMatt Spinler 18bc4179e9SMatt Spinler### "bus_address" 19a49e3f19SPatrick Williams 20bc4179e9SMatt SpinlerThe I2C bus and address string of the form BB-AAAA that is used by the I2C 21bc4179e9SMatt Spinlersubsystem in sysfs. 22bc4179e9SMatt Spinler 23*64fb88c1SGeorge Liu```text 24bc4179e9SMatt Spinler"bus_address": "3-0050" 25bc4179e9SMatt Spinler``` 26bc4179e9SMatt Spinler 27bc4179e9SMatt Spinler### "driver_name" 28a49e3f19SPatrick Williams 29bc4179e9SMatt SpinlerThe name of the eeprom driver in sysfs. 30bc4179e9SMatt Spinler 31*64fb88c1SGeorge Liu```text 32bc4179e9SMatt Spinler"driver_name": "at24" 33bc4179e9SMatt Spinler``` 34bc4179e9SMatt Spinler 35bc4179e9SMatt Spinler### "bind_delay_ms" 36a49e3f19SPatrick Williams 37bc4179e9SMatt SpinlerThe number of milliseconds to wait after a fan is detected before binding the 38bc4179e9SMatt Spinlerdriver to the device in case the device takes some time to initialize after 39a49e3f19SPatrick Williamsbeing plugged into power. If no delay is required, a value of zero can be used. 40bc4179e9SMatt Spinler 41*64fb88c1SGeorge Liu```text 42bc4179e9SMatt Spinler"bind_delay_ms": 1000 43bc4179e9SMatt Spinler``` 44bc4179e9SMatt Spinler 45bc4179e9SMatt Spinler## Example 46a49e3f19SPatrick Williams 476d3e18c0SGeorge Liu```json 48bc4179e9SMatt Spinler[ 49bc4179e9SMatt Spinler { 50bc4179e9SMatt Spinler "name": "fan0", 51bc4179e9SMatt Spinler "path": "/system/chassis/motherboard/fan0", 52bc4179e9SMatt Spinler "methods": [ 53bc4179e9SMatt Spinler { 54bc4179e9SMatt Spinler "type": "tach", 556d3e18c0SGeorge Liu "sensors": ["fan0_0"] 56bc4179e9SMatt Spinler } 57bc4179e9SMatt Spinler ], 58bc4179e9SMatt Spinler "rpolicy": { 59bc4179e9SMatt Spinler "type": "anyof" 60bc4179e9SMatt Spinler }, 616d3e18c0SGeorge Liu "eeprom": { 62bc4179e9SMatt Spinler "bus_address": "30-0050", 63bc4179e9SMatt Spinler "driver_name": "at24", 64bc4179e9SMatt Spinler "bind_delay_ms": 1000 656d3e18c0SGeorge Liu } 66bc4179e9SMatt Spinler } 67bc4179e9SMatt Spinler] 686d3e18c0SGeorge Liu``` 69