1*4882a593SmuzhiyunWhat: /sys/firmware/opal/sensor_groups 2*4882a593SmuzhiyunDate: August 2017 3*4882a593SmuzhiyunContact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 4*4882a593SmuzhiyunDescription: Sensor groups directory for POWER9 powernv servers 5*4882a593Smuzhiyun 6*4882a593Smuzhiyun Each folder in this directory contains a sensor group 7*4882a593Smuzhiyun which are classified based on type of the sensor 8*4882a593Smuzhiyun like power, temperature, frequency, current, etc. They 9*4882a593Smuzhiyun can also indicate the group of sensors belonging to 10*4882a593Smuzhiyun different owners like CSM, Profiler, Job-Scheduler 11*4882a593Smuzhiyun 12*4882a593SmuzhiyunWhat: /sys/firmware/opal/sensor_groups/<sensor_group_name>/clear 13*4882a593SmuzhiyunDate: August 2017 14*4882a593SmuzhiyunContact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 15*4882a593SmuzhiyunDescription: Sysfs file to clear the min-max of all the sensors 16*4882a593Smuzhiyun belonging to the group. 17*4882a593Smuzhiyun 18*4882a593Smuzhiyun Writing 1 to this file will clear the minimum and 19*4882a593Smuzhiyun maximum values of all the sensors in the group. 20*4882a593Smuzhiyun In POWER9, the min-max of a sensor is the historical minimum 21*4882a593Smuzhiyun and maximum value of the sensor cached by OCC. 22