From: "Jordan Crouse" <jordan.crouse@amd.com>
To: "Hasan Rashid" <hasan@digitalpath.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: CS5536 mfgpt timer setup register hangs board
Date: Fri, 25 Jan 2008 17:00:52 -0700 [thread overview]
Message-ID: <20080126000052.GA29843@cosmic.amd.com> (raw)
In-Reply-To: <1788.65.164.104.9.1201305044.squirrel@webmail.digitalpath.net>
On 25/01/08 15:50 -0800, Hasan Rashid wrote:
>
> Hi,
>
> I have been working on a watchdog timer using the mfgpt on AMD Geode
> CS5536. I initialize the setup register MFGPT0_SETUP (0x6206) with hex
> value 0x306 (1100000110b). However, after this first initialization if I
> ever read/write to the register it hangs the system.
>
> I have been through all the documentation, tried several different methods
> but all the efforts, frustratingly, to no avail.
>
> Does anyone have any idea as to why would this be? TIA!
It looks like you are using TinyBIOS. Make sure that if you are using v0.99
that you do *not* enable the MFGPT workaround. If you are using an older
version, then you will need this patch:
http://lkml.org/lkml/2008/1/23/372
And enable mfgptfix on the command line. There seems to be a problem with
the MFGPT "workaround" that causes hangs exactly like you are seeing.
Jordan
--
Jordan Crouse
Systems Software Development Engineer
Advanced Micro Devices, Inc.
next prev parent reply other threads:[~2008-01-26 0:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-25 23:50 CS5536 mfgpt timer setup register hangs board Hasan Rashid
2008-01-26 0:00 ` Jordan Crouse [this message]
-- strict thread matches above, loose matches on Subject: below --
2008-01-26 0:17 Hasan Rashid
2008-01-26 1:14 Hasan Rashid
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