Eric Lee / smarc-fsl-linux-kernel

22 Oct, 2011

1 commit

  • 7fef9fc83   PM / Documentation: Update docs about suspend and CPU hotplug ... Browse Code »

    Update the documentation about the interaction between the suspend (S3) call
    path and the CPU hotplug infrastructure.
    This patch focusses only on the activities of the freezer, cpu hotplug and
    the notifications involved. It outlines how regular CPU hotplug differs from
    the way it is invoked during suspend and also tries to explain the locking
    involved. In addition to that, it discusses the issue of microcode update
    during CPU hotplug operations.

    Signed-off-by: Srivatsa S. Bhat
    Signed-off-by: Rafael J. Wysocki

    Srivatsa S. Bhat
     

17 Oct, 2010

1 commit

  • e1f60b292   PM: Introduce library for device-specific OPPs (v7) ... Browse Code »

    SoCs have a standard set of tuples consisting of frequency and
    voltage pairs that the device will support per voltage domain. These
    are called Operating Performance Points or OPPs. The actual
    definitions of OPP varies over silicon versions. For a specific domain,
    we can have a set of {frequency, voltage} pairs. As the kernel boots
    and more information is available, a default set of these are activated
    based on the precise nature of device. Further on operation, based on
    conditions prevailing in the system (such as temperature), some OPP
    availability may be temporarily controlled by the SoC frameworks.

    To implement an OPP, some sort of power management support is necessary
    hence this library depends on CONFIG_PM.

    Contributions include:
    Sanjeev Premi for the initial concept:
    http://patchwork.kernel.org/patch/50998/
    Kevin Hilman for converting original design to device-based.
    Kevin Hilman and Paul Walmsey for cleaning up many of the function
    abstractions, improvements and data structure handling.
    Romit Dasgupta for using enums instead of opp pointers.
    Thara Gopinath, Eduardo Valentin and Vishwanath BS for fixes and
    cleanups.
    Linus Walleij for recommending this layer be made generic for usage
    in other architectures beyond OMAP and ARM.
    Mark Brown, Andrew Morton, Rafael J. Wysocki, Paul E. McKenney for
    valuable improvements.

    Discussions and comments from:
    http://marc.info/?l=linux-omap&m=126033945313269&w=2
    http://marc.info/?l=linux-omap&m=125482970102327&w=2
    http://marc.info/?t=125809247500002&r=1&w=2
    http://marc.info/?l=linux-omap&m=126025973426007&w=2
    http://marc.info/?t=128152609200064&r=1&w=2
    http://marc.info/?t=128468723000002&r=1&w=2
    incorporated.

    v1: http://marc.info/?t=128468723000002&r=1&w=2

    Signed-off-by: Nishanth Menon
    Signed-off-by: Kevin Hilman
    Signed-off-by: Rafael J. Wysocki

    Nishanth Menon
     

25 Jul, 2008

1 commit

  • 40b4ac33b   pm: remove obsolete piece of PM documentation ... Browse Code »

    Remove some obsolete PM documentation.

    The majority of contents of Documentation/power/pm.txt are
    outdated. Remove the outdated parts of this file and move the rest
    to Documentation/power/apm-acpi.txt . Update the index in
    Documentation/power/ as appropriate.

    Signed-off-by: Rafael J. Wysocki
    Acked-by: Pavel Machek
    Acked-by: Randy Dunlap
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Rafael J. Wysocki
     

13 Mar, 2008

1 commit

17 Oct, 2007

1 commit