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Linux/Documentation/ABI/testing/sysfs-firmware-opal-psr

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  1 What:           /sys/firmware/opal/psr
  2 Date:           August 2017
  3 Contact:        Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
  4 Description:    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 
 11 What:           /sys/firmware/opal/psr/cpu_to_gpu_X
 12 Date:           August 2017
 13 Contact:        Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
 14 Description:    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.
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