1*32377bd2SShilpasri G BhatWhat: /sys/firmware/opal/sensor_groups 2*32377bd2SShilpasri G BhatDate: August 2017 3*32377bd2SShilpasri G BhatContact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 4*32377bd2SShilpasri G BhatDescription: Sensor groups directory for POWER9 powernv servers 5*32377bd2SShilpasri G Bhat 6*32377bd2SShilpasri G Bhat Each folder in this directory contains a sensor group 7*32377bd2SShilpasri G Bhat which are classified based on type of the sensor 8*32377bd2SShilpasri G Bhat like power, temperature, frequency, current, etc. They 9*32377bd2SShilpasri G Bhat can also indicate the group of sensors belonging to 10*32377bd2SShilpasri G Bhat different owners like CSM, Profiler, Job-Scheduler 11*32377bd2SShilpasri G Bhat 12*32377bd2SShilpasri G BhatWhat: /sys/firmware/opal/sensor_groups/<sensor_group_name>/clear 13*32377bd2SShilpasri G BhatDate: August 2017 14*32377bd2SShilpasri G BhatContact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 15*32377bd2SShilpasri G BhatDescription: Sysfs file to clear the min-max of all the sensors 16*32377bd2SShilpasri G Bhat belonging to the group. 17*32377bd2SShilpasri G Bhat 18*32377bd2SShilpasri G Bhat Writing 1 to this file will clear the minimum and 19*32377bd2SShilpasri G Bhat maximum values of all the sensors in the group. 20*32377bd2SShilpasri G Bhat In POWER9, the min-max of a sensor is the historical minimum 21*32377bd2SShilpasri G Bhat and maximum value of the sensor cached by OCC. 22