>-----Original Message-----
>From: Jon Smirl [mailto:[email protected]]
>Sent: Tuesday, June 14, 2005 4:11 PM
>To: Pallipadi, Venkatesh
>Cc: Bob Picco; Andrew Morton; lkml
>Subject: Re: Fwd: hpet patches
>
>On 6/14/05, Pallipadi, Venkatesh <[email protected]> wrote:
>> OK. I was thinking PCI fixup is to late in the initialization for
>> HPET fixup. But, we should be OK with a new ACPI_FIXUP macro. My only
>> other concern is, we should safely fallback to PIT, when our fixed_up
>> HPET address isn't right.
>
>If we're keying off from the PCI ID for the chip, how can it not have
>the device? On the other hand, it would probably be good to always do
>a little test on the HPET and fall back to the PIT if the HPET is
>dead.
HPET device itself can be there. But, it can appear in different
addresses. Most commonly used address is 0xfed00000. But, it can be
different as well.
Thanks,
Venki
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