linux-kernel - AMD Geode LX WDT (geode-mfgpt)

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Message-ID: <20100331045414.GA3241@hekate.rbi.informatik.uni-frankfurt.de>
Date:	Wed, 31 Mar 2010 06:54:14 +0200
From:	Martin Teufel <teufel@...ormatik.uni-frankfurt.de>
To:	linux-kernel@...r.kernel.org
Subject: AMD Geode LX WDT (geode-mfgpt)

Hi,

I have some ALIX boards (SBC) with AMD Geode LX CPUs and their companion
device CS5536 and am using Debian on them. I didn't care about the
integrated watchdog timer (in the CS5536) so far. Recently I did, but
neither the CONFIG_GEODE_WDT was set in the debian kernel (2.6.26), nor
the CONFIG_GEODE_MFGPT_TIMER. So I compiled my own debian 2.6.26 geode
kernel (CONFIG_MGEODE_LX=y, CONFIG_GEODE_WDT=y,
CONFIG_GEODE_MFGPT_TIMER=y, CONFIG_CRYPTO_DEV_GEODE=y etc.).

My problem is that the geode-mfgpt doesn't find any timers:

[    0.204012] geode-mfgpt:  0 MFGPT timers available.
[    0.208013] mfgpt-timer:  Could not allocate a MFPGT timer
...
[    2.284029] geodewdt:  No timers were available

My question is: Why doesn't it? Is this a known bug? If so, is it
already fixed in a newer kernel version?

BTW: There are two typing errors in the mfgpt_32.c (line 232 and 342).
It should be MFGPT but is MFPGT. :)

Please note that I'm *not* on the mailing list, so please send me a CC
of your answer(s) - thanks.
Since I'm relatively new to kernel issues maybe I'm just missing
something. If so, please forgive me and don't objurgate me too much. ;-)

Regards,
Martin

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