Re: CRC errors between mvneta and macb

From: Willy Tarreau
Date: Fri Oct 19 2018 - 11:44:52 EST

On Fri, Oct 19, 2018 at 05:15:03PM +0200, Richard Genoud wrote:
> When there's a CRC error, the TXCLK has its polarity inverted...
> That's a clue !
> But this TXCLK (25MHz) is not used on the g35-ek.
> Only the REFCLK/XT2 (50MHz) is used to synchronise the PHY and the macb.
> So I guess that the TXCLK has a role to play to generate TX+/TX-

Well, just a stupid idea, maybe when this signal is inverted, the TX+/TX-
are desynchronized by half a clock and are not always properly interpreted
on the other side ?