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cubelinux-kernel/Documentation/ABI/testing/sysfs-firmware-opal-powercap
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Greg Kroah-Hartman 598cf27219 Linux 6.19.3
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org
Tested-by: Florian Fainelli <florian.fainelli@broadcom.com>
Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com>
Tested-by: Peter Schneider <pschneider1968@googlemail.com>
Tested-by: Jon Hunter <jonathanh@nvidia.com>
Tested-by: Salvatore Bonaccorso <carnil@debian.org>
Tested-by: Brett A C Sheffield <bacs@librecast.net>
Tested-by: Mark Brown <broonie@kernel.org>
Tested-by: Luna Jernberg <droidbittin@gmail.com>
Tested-by: Ronald Warsow <rwarsow@gmx.de>
Tested-by: Justin M. Forbes <jforbes@fedoraproject.org>
Tested-by: Ron Economos <re@w6rz.net>
Tested-by: Miguel Ojeda <ojeda@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2026-02-19 16:33:27 +01:00

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What: /sys/firmware/opal/powercap
Date: August 2017
Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: Powercap directory for Powernv (P8, P9) servers
Each folder in this directory contains a
power-cappable component.
What: /sys/firmware/opal/powercap/system-powercap
/sys/firmware/opal/powercap/system-powercap/powercap-min
/sys/firmware/opal/powercap/system-powercap/powercap-max
/sys/firmware/opal/powercap/system-powercap/powercap-current
Date: August 2017
Contact: Linux for PowerPC mailing list <linuxppc-dev@lists.ozlabs.org>
Description: System powercap directory and attributes applicable for
Powernv (P8, P9) servers
This directory provides powercap information. It
contains below sysfs attributes:
- powercap-min : This file provides the minimum
possible powercap in Watt units
- powercap-max : This file provides the maximum
possible powercap in Watt units
- powercap-current : This file provides the current
powercap set on the system. Writing to this file
creates a request for setting a new-powercap. The
powercap requested must be between powercap-min
and powercap-max.