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Date:	Sat, 12 Apr 2014 18:37:54 +0200
From: (Arnaud Ebalard)
To:	Thomas Petazzoni <>
	Willy Tarreau <>, David Miller <>
Subject: Re: [REGRESSION,BISECTED] mvneta broken in 3.14 on RN2120, RN102 and RN104 after e3a8786c10e7

Hi Thomas,

Thomas Petazzoni <> writes:

>> I built a first kernel with the 'else' branch above removed (rationale:
>> SERDES config was not set for RGMII prior to the patch). The issue
>> remained.
>>     -       mvneta_gmac_rgmii_set(pp, 1);
>>     +       val = mvreg_read(pp, MVNETA_GMAC_CTRL_2);
>>     +
>> I removed MVNETA_GMAC2_PCS_ENABLE flag setting (rationale: it was only
>> done for SGMII prior to the patch and all my platforms have RGMII
>> connected PHY). *The issue disappeared on all 3 NAS with that simple
>> change*.
> Yes, issue known. See
> Unfortunately, at this point I don't have enough informations to fix
> both issues: the issue you're having, and the issue of using mvneta as
> a module. Since the issue you're having is much more problematic, I'll
> send a patch to revert my patch, until I have enough informations to
> fix the problem in a proper way.
> Thanks for your report!

Thanks for your work and the fast feedback. Do not hesitate to bug me if
you want me to do some tests at some point.


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