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1What: /sys/firmware/opal/psr
2Date: August 2017
3Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.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@lists.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.