netdev - Re: [PATCH 07/14] net: axienet: Fix SGMII support

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Date:   Fri, 10 Jan 2020 20:33:45 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Russell King - ARM Linux admin <linux@...linux.org.uk>
Cc:     Andre Przywara <andre.przywara@....com>, netdev@...r.kernel.org,
        Radhey Shyam Pandey <radhey.shyam.pandey@...inx.com>,
        Michal Simek <michal.simek@...inx.com>,
        linux-kernel@...r.kernel.org,
        Robert Hancock <hancock@...systems.ca>,
        "David S . Miller" <davem@...emloft.net>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 07/14] net: axienet: Fix SGMII support

> Phylink currently expects the result of the in-band negotiation at
> the MAC PCS to be propagated to the MAC by hardware (as this is what
> happens with mvneta and mvpp2, the first two MACs that phylink
> supports.)  If there is hardware that requires something else, then
> that will need to be revisited, and will result in not only code but
> also documentation updates as well.

Hi Russell

This is an issue i'm having at the moment with Marvell switches. They
do not propagate the results to the MAC. So when i get an interrupt
from the SERDES that the link is up, i'm programming the MAC as
needed.

	Andrew