From: alexander.stein@systec-electronic.com (Alexander Stein)
To: linux-arm-kernel@lists.infradead.org
Subject: [AT91SAM9260] kernel hang in at91sam926x_pit_reset()
Date: Thu, 11 Nov 2010 13:59:00 +0100 [thread overview]
Message-ID: <201011111400.15767.alexander.stein@systec-electronic.com> (raw)
In-Reply-To: <AANLkTi=ahWs+VidZpjPEBfUs5RZkv18XMDB0jCgrHA_r@mail.gmail.com>
On Thursday 11 November 2010, 13:50:12 Vitja Makarov wrote:
> > This won't work as you cannot set PIT_PITEN until the PIT has stopped
> > (UserManuel 17.3), read as CPIV is 0. You should check if and why CPIV
> > isn't increasing.
> >
> > Best regards
> > Alexander
>
> Could it be hardware bug? With revision A it works. Do you have
> success on use rev B. CPUs?
> May be the problem is in u-boot or initial loader?
We don't use 9260 actually, we use the successor 9g20. Have you read the
errata ? And yes, it could be a problem in u-boot or your other loader.
But AFAIK u-boot uses the PIT as a free running timer to get a time base.
Best regards,
Alexander
prev parent reply other threads:[~2010-11-11 12:59 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-11 11:41 [AT91SAM9260] kernel hang in at91sam926x_pit_reset() Vitja Makarov
2010-11-11 12:44 ` Alexander Stein
2010-11-11 12:50 ` Vitja Makarov
2010-11-11 12:59 ` Alexander Stein [this message]
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