From: Rodolfo Giometti <giometti-AVVDYK/kqiJWk0Htik3J/w@public.gmane.org>
To: Joe Ghalam <joe.ghalam-h+EFgaI/KG7uufBYgWm87A@public.gmane.org>
Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: i2c Mux support for LTC4306 multiplexers
Date: Thu, 2 Sep 2010 10:07:08 +0200 [thread overview]
Message-ID: <20100902080708.GC28869@enneenne.com> (raw)
In-Reply-To: <4C7ECF6D.30602-h+EFgaI/KG7uufBYgWm87A@public.gmane.org>
On Wed, Sep 01, 2010 at 03:10:53PM -0700, Joe Ghalam wrote:
> Hi,
> I have been trying to include you i2c changes to bring in support for the
> i2c muxes in my system. I'm using Linux 2.6.33.2 with an MPC8547E. There
> are two IC2 buses hanging off the host processor. The 2nd I2C bus has 3
> LT4306 multiplexers (4 ch per device).
>
> My current setup (without the i2c-mux) uses the buses/i2c-mpc.c to create
> two adapters mapped to /dev/i2c-0 and /dev/i2c-1 (these devices are
> services by an i2c proxy). I would like to move away from this setup by
> using i2c-mux + mux specific drivers.
>
> I have ported your changes in my version of Linux as best as I could, and
> I also used pca542x related files as templates to create support for
> ltc4306. During the system boot up, as usual, I see two "MPC adapter"
> adapters, 0 and 1, getting registered, and I also see my LTC4306 device
> registered. But I haven't been able to change the i2c-mpc to probe the
> already discovered buses for any muxes.
Maybe you should provide some code and/or debugging messages... I'm
sorry but I don't understand your problem.
Ciao,
Rodolfo
--
GNU/Linux Solutions e-mail: giometti-AVVDYK/kqiJWk0Htik3J/w@public.gmane.org
Linux Device Driver giometti-k2GhghHVRtY@public.gmane.org
Embedded Systems phone: +39 349 2432127
UNIX programming skype: rodolfo.giometti
Freelance ICT Italia - Consulente ICT Italia - www.consulenti-ict.it
next parent reply other threads:[~2010-09-02 8:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4C7ECF6D.30602@cyanoptics.com>
[not found] ` <4C7ECF6D.30602-h+EFgaI/KG7uufBYgWm87A@public.gmane.org>
2010-09-02 8:07 ` Rodolfo Giometti [this message]
[not found] ` <20100902080708.GC28869-AVVDYK/kqiJWk0Htik3J/w@public.gmane.org>
2010-09-02 10:48 ` i2c Mux support for LTC4306 multiplexers Michael Lawnick
[not found] ` <4C7F80FF.5050005-Mmb7MZpHnFY@public.gmane.org>
2010-09-02 12:02 ` Jean Delvare
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