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From: pavel@ucw.cz (Pavel Machek)
To: linux-arm-kernel@lists.infradead.org
Subject: bit errors on spitz
Date: Mon, 29 Mar 2010 20:27:36 +0200	[thread overview]
Message-ID: <20100329182736.GA1373@ucw.cz> (raw)
In-Reply-To: <1269207753.13196.53.camel@utx.utx.cz>

On Sun 2010-03-21 22:42:33, Stanislav Brabec wrote:
> Pavel Machek p??e v Ne 21. 03. 2010 v 21:43 +0100:
> > On Fri 2010-03-12 10:07:04, Stanislav Brabec wrote:
> 
> > > > > Good tip. It seems that nobody ported driver for the voltage control
> > > > > chip ISL6271 from 2.4 kernel, and bootloader probably does not set
> > > > > correct values.
> > 
> > Are we sure about this one? If we have wrong voltages on various
> > parts, that kind-off explains it.
> > 
> > Would it be possible to measure (Voltmeter) difference between 2.4
> > kernel and 2.6 kernel?
> 
> If you are ready to run Zaurus in dismantled state, then yes. Measure on
> the upper pin of the large coil in the center of the
> http://www.penguin.cz/~utx/zaurus/pcbt_uc.jpg image or on the testpoint
> nearby (probably to the right).

I'm not comfortable dismantling it :-(.

> Alternatively, it is possible to write a driver. It is just one byte
> write and one byte read via I2C.

Do you know what byte it is? That sounds easy enough...

But I have small problem now -- zaurus seems to work mostly fine
now. Does it depend on temperature, or what? Tried mtest,
nothing. Tried compiling kernel, ok... Will try few more times...

								Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

  reply	other threads:[~2010-03-29 18:27 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-05 21:27 bit errors on spitz Pavel Machek
2010-03-08  5:37 ` Eric Miao
2010-03-08  7:28   ` Pavel Machek
2010-03-08  8:25     ` Cyril Hrubis
2010-03-08 11:48       ` Stanislav Brabec
2010-03-08 12:16         ` Cyril Hrubis
2010-03-08 12:42           ` Russell King - ARM Linux
2010-03-08 13:32             ` Cyril Hrubis
2010-06-03  0:01           ` [URGENT] Re: bit errors on spitz + voipac Marek Vasut
2010-06-03  2:30             ` Eric Miao
2010-03-21 20:40         ` bit errors on spitz Pavel Machek
2010-03-11 13:25       ` Andy Green
2010-03-11 15:42         ` Stanislav Brabec
2010-03-11 21:21           ` Andy Green
2010-03-12  9:07             ` Stanislav Brabec
2010-03-12  9:33               ` Andy Green
2010-03-12 10:43                 ` Stanislav Brabec
2010-03-12 11:13                   ` Andy Green
2010-03-21 20:43               ` Pavel Machek
2010-03-21 21:42                 ` Stanislav Brabec
2010-03-29 18:27                   ` Pavel Machek [this message]
2010-03-29 18:52                     ` Stanislav Brabec

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