linux-kernel - Re: [patch 2.6.19-git] rts-rs5c372 updates: more chips, alarm, 12hr mode, etc

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Date:	Tue, 12 Dec 2006 00:20:18 -0800
From:	David Brownell <david-b@...bell.net>
To:	"Dan Williams" <dan.j.williams@...el.com>
Cc:	"Voipio Riku" <Riku.Voipio@...ial.fi>, rtc-linux@...glegroups.com,
	"Linux Kernel list" <linux-kernel@...r.kernel.org>,
	"Alessandro Zummo" <alessandro.zummo@...ertech.it>,
	i2c@...sensors.org
Subject: Re: [patch 2.6.19-git] rts-rs5c372 updates: more chips, alarm, 12hr mode, etc

On Monday 11 December 2006 3:33 pm, Dan Williams wrote:
> 
> According to the latest specification update
> (http://www.intel.com/design/iio/specupdt/27351910.pdf) there are no
> known issues with the i2c. 

That's for the 80319 ... Riku said he was using 80219, that
could imply some differences.  And I distinctly recall Intel's
XScale docs having a few problems whereby "live" silicon bugs
didn't always stay in the "spec update" documents, so it's
possible that older docs would be needed.

At this point all we really _know_ is that requests made
through 80219's i2c controller don't give the correct result
(at least on Riku's 80219 board) and moreover seem to have a
consistent failure mode ... whereas ones made with OMAP's
controller (and presumably that of the original driver author,
for a Synology DS-101 presumably with IXP420) do act ok.

- Dave

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