1 What: /sys/firmware/opal/psr
3 Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
4 Description: Power-Shift-Ratio directory for Powernv P9 servers
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
11 What: /sys/firmware/opal/psr/cpu_to_gpu_X
13 Contact: Linux for PowerPC mailing list <linuxppc-dev@ozlabs.org>
14 Description: PSR sysfs attributes for Powernv P9 servers
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.