18c2ecf20Sopenharmony_ciWhat: /sys/firmware/opal/psr 28c2ecf20Sopenharmony_ciDate: August 2017 38c2ecf20Sopenharmony_ciContact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 48c2ecf20Sopenharmony_ciDescription: Power-Shift-Ratio directory for Powernv P9 servers 58c2ecf20Sopenharmony_ci 68c2ecf20Sopenharmony_ci Power-Shift-Ratio allows to provide hints the firmware 78c2ecf20Sopenharmony_ci to shift/throttle power between different entities in 88c2ecf20Sopenharmony_ci the system. Each attribute in this directory indicates 98c2ecf20Sopenharmony_ci a settable PSR. 108c2ecf20Sopenharmony_ci 118c2ecf20Sopenharmony_ciWhat: /sys/firmware/opal/psr/cpu_to_gpu_X 128c2ecf20Sopenharmony_ciDate: August 2017 138c2ecf20Sopenharmony_ciContact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org> 148c2ecf20Sopenharmony_ciDescription: PSR sysfs attributes for Powernv P9 servers 158c2ecf20Sopenharmony_ci 168c2ecf20Sopenharmony_ci Power-Shift-Ratio between CPU and GPU for a given chip 178c2ecf20Sopenharmony_ci with chip-id X. This file gives the ratio (0-100) 188c2ecf20Sopenharmony_ci which is used by OCC for power-capping. 19