From: Lutz Jaenicke <ljaenicke@innominate.com>
To: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: David S Miller <davem@davemloft.net>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] lxt PHY: Support for the buggy LXT973 rev A2
Date: Mon, 10 Sep 2012 20:17:47 +0200 [thread overview]
Message-ID: <20120910181747.GA5960@lutz.bln.innominate.local> (raw)
In-Reply-To: <201209101545.q8AFjn7u021483@localhost.localdomain>
On Mon, Sep 10, 2012 at 05:45:49PM +0200, Christophe Leroy wrote:
> This patch adds proper handling of the buggy revision A2 of LXT973 phy, adding
> precautions linked to ERRATA Item 4:
>
> Item 4: MDIO Interface and Repeated Polling
> Problem: Repeated polling of odd-numbered registers via the MDIO interface
> randomly returns the contents of the previous even register.
> Implication: Managed applications may not obtain the correct register contents
> when a particular register is monitored for device status.
> Workaround: None.
> Status: This erratum has been previously fixed (in rev A3)
Hmm. Were did you get the hardware from? We have been using LXT973 in
our products and the A2 was replaced by A3 in 2003.
Best regards,
Lutz
--
Dr.-Ing. Lutz Jänicke
CTO
Innominate Security Technologies AG /protecting industrial networks/
tel: +49.30.921028-200
fax: +49.30.921028-020
Rudower Chaussee 13
D-12489 Berlin, Germany
www.innominate.com
Register Court: AG Charlottenburg, HR B 81603
Management Board: Dirk Seewald
Chairman of the Supervisory Board: Christoph Leifer
next prev parent reply other threads:[~2012-09-10 18:17 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-10 15:45 [PATCH v2] lxt PHY: Support for the buggy LXT973 rev A2 Christophe Leroy
2012-09-10 17:28 ` Richard Cochran
2012-09-10 18:17 ` Lutz Jaenicke [this message]
2012-09-22 16:21 ` leroy christophe
2012-09-23 18:44 ` Lutz Jaenicke
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120910181747.GA5960@lutz.bln.innominate.local \
--to=ljaenicke@innominate.com \
--cc=christophe.leroy@c-s.fr \
--cc=davem@davemloft.net \
--cc=linux-kernel@vger.kernel.org \
--cc=netdev@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox