linux-kernel - Re: [PATCH v3] Bitbanging i2c bus driver using the GPIO API

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Date:	Sun, 22 Apr 2007 11:41:51 -0400
From:	lsorense@...lub.uwaterloo.ca (Lennart Sorensen)
To:	Jean Delvare <khali@...ux-fr.org>
Cc:	Haavard Skinnemoen <hskinnemoen@...el.com>,
	David Brownell <david-b@...bell.net>,
	Bryan Wu <bryan.wu@...log.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Deepak Saxena <dsaxena@...xity.net>,
	linux-kernel@...r.kernel.org,
	Christer Weinigel <wingel@...o-system.com>,
	Jordan Crouse <jordan.crouse@....com>
Subject: Re: [PATCH v3] Bitbanging i2c bus driver using the GPIO API

On Fri, Apr 20, 2007 at 07:49:33PM +0200, Jean Delvare wrote:
> The scx200_acb driver was heavily modified in 2.6.17 and 2.6.18, not
> much since then. I am not familiar with the hardware so I can't comment
> on which chips are supposed to work and which aren't.

Well 2.6.18's scx200_acb works on the geode LX module I have, but no on
the geode sc1200 module (where scx200_i2c does work).

scx200_acb doesn't detect any device that it can drive (nothing in dmesg
at all when loaded) on the sc1200.  I believe the main changes that
happened to scx200_acb was adding support for the newer CSxxxx chipsets,
such as the one used with the geode LX (which does work now).

--
Len Sorensen
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