From: leroy christophe <christophe.leroy@c-s.fr>
To: Lutz Jaenicke <ljaenicke@innominate.com>
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: Sat, 22 Sep 2012 18:21:38 +0200 [thread overview]
Message-ID: <505DE592.8060103@c-s.fr> (raw)
In-Reply-To: <20120910181747.GA5960@lutz.bln.innominate.local>
Le 10/09/2012 20:17, Lutz Jaenicke a écrit :
> 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
They are custom boards that my company manufactures. Most boards
manufactured before 2006 or 2007 have this buggy chip.
Regards
Christophe
next prev parent reply other threads:[~2012-09-22 16:21 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
2012-09-22 16:21 ` leroy christophe [this message]
2012-09-23 18:44 ` Lutz Jaenicke
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