linux-imx/sysfs-firmware-opal-psr at lf-6.6.y

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Shilpasri G Bhat 8e84b2d1f0 powerpc/powernv: Add support to set power-shifting-ratio

This patch adds support to set power-shifting-ratio which hints the
firmware how to distribute/throttle power between different entities
in a system (e.g CPU v/s GPU). This ratio is used by OCC for power
capping algorithm.

Signed-off-by: Shilpasri G Bhat <shilpa.bhat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

2017-08-10 22:40:01 +10:00

706 B

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What: /sys/firmware/opal/psr Date: August 2017 Contact: Linux for PowerPC mailing list linuxppc-dev@ozlabs.org Description: Power-Shift-Ratio directory for Powernv P9 servers

	Power-Shift-Ratio allows to provide hints the firmware
	to shift/throttle power between different entities in
	the system. Each attribute in this directory indicates
	a settable PSR.

What: /sys/firmware/opal/psr/cpu_to_gpu_X Date: August 2017 Contact: Linux for PowerPC mailing list linuxppc-dev@ozlabs.org Description: PSR sysfs attributes for Powernv P9 servers

	Power-Shift-Ratio between CPU and GPU for a given chip
	with chip-id X. This file gives the ratio (0-100)
	which is used by OCC for power-capping.

706 B Raw Permalink Blame History

706 B

Raw Permalink Blame History