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