From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Michael Buesch <mb@bu3sch.de>
Cc: linuxppc-dev@ozlabs.org
Subject: Re: Powerbook shuts down hard when hot, patch found
Date: Sun, 30 Sep 2007 08:19:53 +1000 [thread overview]
Message-ID: <1191104393.28637.5.camel@pasglop> (raw)
In-Reply-To: <200709292353.06476.mb@bu3sch.de>
>
> This all smells to me like a silicon bug, so I'd start searching
> in the silicon erratas. But I'm not sure, of course. It's also strange
> that it depends on temperature. (That's why I first expected the PMU
> would cause this).
>
> Thanks for your help.
Could be that we are creating a short by driving the output low, thus
causing the silicon to heat up, but that's strange.
Also, the other change I made you do turns these into inputs, thus the
DDL lines should be pulled up, unless ... the board doesn't have
pullups.
Ben.
next prev parent reply other threads:[~2007-09-29 22:19 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-28 21:32 Powerbook shuts down hard when hot, patch found Michael Buesch
2007-09-28 23:04 ` Benjamin Herrenschmidt
2007-09-29 11:06 ` Michael Buesch
2007-09-29 11:22 ` Michael Buesch
2007-09-29 21:51 ` Benjamin Herrenschmidt
2007-09-29 21:53 ` Michael Buesch
2007-09-29 22:19 ` Benjamin Herrenschmidt [this message]
2007-09-29 22:26 ` Michael Buesch
2007-09-29 22:49 ` Benjamin Herrenschmidt
2007-09-30 10:13 ` Michael Buesch
2007-09-30 10:16 ` Michael Buesch
2007-10-01 8:00 ` Michel Dänzer
2007-10-01 20:58 ` Michael Buesch
2007-10-02 6:43 ` Michel Dänzer
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