1What: /sys/firmware/opal/sensor_groups 2Date: August 2017 3Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 4Description: Sensor groups directory for POWER9 powernv servers 5 6 Each folder in this directory contains a sensor group 7 which are classified based on type of the sensor 8 like power, temperature, frequency, current, etc. They 9 can also indicate the group of sensors belonging to 10 different owners like CSM, Profiler, Job-Scheduler 11 12What: /sys/firmware/opal/sensor_groups/<sensor_group_name>/clear 13Date: August 2017 14Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 15Description: Sysfs file to clear the min-max of all the sensors 16 belonging to the group. 17 18 Writing 1 to this file will clear the minimum and 19 maximum values of all the sensors in the group. 20 In POWER9, the min-max of a sensor is the historical minimum 21 and maximum value of the sensor cached by OCC. 22