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Re: [PATCH 4/8] Force detect and enable HPET on ICH

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From: Udo A. Steinberg
Subject: Re: [PATCH 4/8] Force detect and enable HPET on ICH
Date: Sunday, May 20, 2007 - 5:58 pm

On Mon, 7 May 2007 13:31:28 -0700 Venki Pallipadi (VP) wrote:

VP> Force detect and/or enable HPET on ICH chipsets. This patch just handle=
s the
VP> detection part and following patches use this information.
VP>=20
VP> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>

Venki,

Is there any reason your patch only enables HPET on ICH6 and beyond? HPET c=
an
be enabled on earlier ICH by setting bit 17 in GEN_CNTL on PCI dev 31, func=
 0,
offset d0. This seems to work for ICH3/4/5. Are there any errata affecting
these ICHs?

Cheers,

	- Udo

--=20
Dipl.-Inf. Udo Steinberg                    =20
Technische Universit=E4t Dresden               http://os.inf.tu-dresden.de/=
~us15
Institute for System Architecture            Tel: +49 351 463 38401
D-01062 Dresden                              Fax: +49 351 463 38284
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Messages in current thread:
[PATCH 4/8] Force detect and enable HPET on ICH, Venki Pallipadi, (Mon May 7, 1:31 pm)
Re: [PATCH 4/8] Force detect and enable HPET on ICH, Udo A. Steinberg, (Sun May 20, 5:58 pm)
Re: [PATCH 4/8] Force detect and enable HPET on ICH, Jesse Barnes, (Mon May 21, 8:46 am)
RE: [PATCH 4/8] Force detect and enable HPET on ICH, Pallipadi, Venkatesh, (Mon May 21, 8:52 am)
Re: [PATCH 4/8] Force detect and enable HPET on ICH, Udo A. Steinberg, (Mon May 21, 8:53 am)