1What: /sys/firmware/opal/psr 2Date: August 2017 3Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 4Description: Power-Shift-Ratio directory for Powernv P9 servers 5 6 Power-Shift-Ratio allows to provide hints the firmware 7 to shift/throttle power between different entities in 8 the system. Each attribute in this directory indicates 9 a settable PSR. 10 11What: /sys/firmware/opal/psr/cpu_to_gpu_X 12Date: August 2017 13Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 14Description: PSR sysfs attributes for Powernv P9 servers 15 16 Power-Shift-Ratio between CPU and GPU for a given chip 17 with chip-id X. This file gives the ratio (0-100) 18 which is used by OCC for power-capping. 19