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1What: /sys/firmware/opal/psr2Date: August 20173Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>4Description: Power-Shift-Ratio directory for Powernv P9 servers5 6 Power-Shift-Ratio allows to provide hints the firmware7 to shift/throttle power between different entities in8 the system. Each attribute in this directory indicates9 a settable PSR.10 11What: /sys/firmware/opal/psr/cpu_to_gpu_X12Date: August 201713Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>14Description: PSR sysfs attributes for Powernv P9 servers15 16 Power-Shift-Ratio between CPU and GPU for a given chip17 with chip-id X. This file gives the ratio (0-100)18 which is used by OCC for power-capping.19