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Power Management Gets More Tweaking In Linux 3.9

Linux Kernel

Published on 11 February 2013 11:08 AM EST
Written by Michael Larabel in Linux Kernel
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Rafael Wysocki has offered a glimpse at what's to be merged into mainline in the coming weeks for the Linux 3.9 kernel when it comes to ACPI and power management.

Among the ACPI/PM changes coming up for Linux 3.9 include supporting a bit more of the ACPI 5 specification, a cpufreq driver for Marvell Kirkwood SoCs, support for new tables within the ACPICA iASL, performance enhancements to ACPI package objects, finally a cpufreq driver for the Calxeda Highbank, Lynxpoint LPSS clocks support, an imx6q cpufreq driver, support for the Intel Low Power Subsystem, and the new Intel P-State driver. There's also a lot of other random ACPI / power management changes scattered throughout.

The new hardware support / cpufreq drivers is great along with Intel's P-State driver. The Lynx Point chipset work is interesting and the Intel Low Power Subsystem (LPSS) is a new feature to this chipset coming for Intel's Haswell platform.

The current list of changes being queued up for the Linux 3.9 merge window can be found on the Linux kernel mailing list.

Other features being set for the Linux 3.9 kernel are covered in the aptly-named Features Coming In For The Linux 3.9 Kernel article.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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