From: Arno Geissel <jgeissel@gmx.net>
To: linuxppc-embedded@ozlabs.org
Subject: Re: MPC5200 I2C unstable?
Date: Wed, 3 May 2006 16:15:01 +0200 [thread overview]
Message-ID: <200605031615.01418.jgeissel@gmx.net> (raw)
In-Reply-To: <200605031608.47579.kimmo.surakka@oxinst.fi>
As far as I know there are hardware problems on the MPC5200 I2C
interface. They should be solved in the revision B
Arno
> Hi,
>
> I'm using a MPC5200 based board (namely TQM5200) and the
> linuxppc_2_4_devel-2005-10-25-1440 kernel from denx.de. To get the serial
> ports more stable, I've applied the serial port patch by Achim Machura (can
> be found in
> http://marc.theaimsgroup.com/?l=linuxppc-embedded&m=112901824515097&w=2).
> The patch needed small adjustments, but nothing too large -- mostly
> different line numbers.
>
> Also, to get the first I2C interface to work, I've had to change the file
> drivers/i2c/i2c-tqm5200.c followingly:
>
> -#define MPC5xxx_I2C1_ENABLE 0 /* Disable */
> +#define MPC5xxx_I2C1_ENABLE 1 /* Enable */
>
> The code compiles OK, but the I2C bus gets stuck after a short while. Has
> anyone else experienced something similar? I tried to Google for
> information but didn't find anything relevant. Maybe I just didn't know the
> right keywords to search for?
>
> Thanks in advance,
>
> Kimmo Surakka
>
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prev parent reply other threads:[~2006-05-03 14:15 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-05-03 13:08 MPC5200 I2C unstable? Kimmo Surakka
2006-05-03 14:15 ` Arno Geissel [this message]
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