[PATCH] AHCI powersaving and port-stopping (2.6.22-rc4)

[Kristen Carlson Accardi]

On Mon, 11 Jun 2007 13:24:07 -0700
Kristen Carlson Accardi <kristen.c.accardi at intel.com> wrote:

> On Mon, 11 Jun 2007 13:13:19 -0700
> Arjan van de Ven <arjan at linux.intel.com> wrote:
> 
> > Török Edvin wrote:
> > > On 6/11/07, Kristen Carlson Accardi <kristen.c.accardi at intel.com> wrote:
> > >> > -
> > >>
> > >> I've updated the hardware based patches and posted to the mailing list -
> > >> they do indeed save anywhere from .6-1.5 watts depending on the system,
> > >> on my X60 they save about a watt.  I don't think that a hardware based
> > >> solution is irrelevant at all - it will usually be able to make faster
> > >> and more accurrate decisions about when to place the link into lower
> > >> power state than software could.
> > >>
> > > 
> > > Is there any chance non-AHCI chipsets will be supported too in the
> > > future? Like an Intel ICH7-M...
> > 
> > I thought ICH7M did support ahci...  but maybe I'm very wrong there...
> > 
> 
> It does - regular ICH7 does not, but ICH7M does.
> 
> 

Oops - I mean regular ICH7 does not support ALPM... it does support AHCI.

Kristen