fix VT8237S/K8M890 powernow

[Rudolf Marek]

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Hello all,

I finally got the powernow working after countless hours. And CPU runs fullspeed
after power up!

The patch changes the LDTSTOP length as well mostly default content of 0xec,
0xe4 and 0xe5 registers. I'm suspecting that the documentation may be wrong.

Furthermore this fix for powernow may not work on CPUs hit by errata #181.
Workaround should be implemented. The powernow may not work on pre-A2 revisions
of VT8237S silicon, revision reg is unknown.

Signed-off-by: Rudolf Marek

Thanks,
Rudolf
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[Peter Stuge]

Hi,

Rudolf Marek wrote:
> I finally got the powernow working after countless hours. And CPU
> runs fullspeed after power up!

Awesome.
> Signed-off-by: Rudolf Marek

Acked-by: Peter Stuge

[ron minnich]

did we get a commit yet?

ron

On Thu, Dec 4, 2008 at 3:29 PM, Peter Stuge  wrote:
> Hi,
>
> Rudolf Marek wrote:
> > I finally got the powernow working after countless hours. And CPU
> > runs fullspeed after power up!
>
> Awesome.
> > Signed-off-by: Rudolf Marek
>
> Acked-by: Peter Stuge

[Rudolf Marek]

Hi,

Sorry I forgot to write it here.  Changeset 3795 and 3796.

Thanks,
Rudolf