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Message-ID: <505DE592.8060103@c-s.fr> Date: Sat, 22 Sep 2012 18:21:38 +0200 From: leroy christophe <christophe.leroy@....fr> To: Lutz Jaenicke <ljaenicke@...ominate.com> CC: David S Miller <davem@...emloft.net>, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH v2] lxt PHY: Support for the buggy LXT973 rev A2 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 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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