[lkml]   [2006]   [Sep]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: ACPI: Idle Processor PM Improvements
    On 01/09/06 05:12 +0100, Matthew Garrett wrote:
    > On Thu, Aug 31, 2006 at 11:53:04PM -0400, Len Brown wrote:
    > > The Geode doesn't suport any C-states -- so ACPI wouldn't help them there anyway.
    > Are you sure of that? The docs I have here suggest C1 and C2, but it's
    > possible that that's just the companion chip and they aren't implemented
    > in the CPU.

    C1 is essentially suspend on hlt. We have something called Automatic Hardware
    Clock Gating that kicks in when the blocks go unused, so that saves a bit
    more power (especially in the south bridge) then we would with just a simple
    hlt. In any event, this already happens without the assistance of ACPI.

    The 5536 has support for a C2 state as well, but I don't know if that
    has any effect on the GX or not.


    Jordan Crouse
    Senior Linux Engineer
    Advanced Micro Devices, Inc.

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2006-09-01 17:55    [W:0.031 / U:16.548 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site