netdev - Re: [PATCH net-next 1/2] net: phylink: explicitly configure in-band autoneg for PHYs that support it

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Date:   Sat, 13 Feb 2021 18:09:13 +0100
From:   Michael Walle <michael@...le.cc>
To:     Vladimir Oltean <olteanv@...il.com>
Cc:     "David S. Miller" <davem@...emloft.net>,
        Jakub Kicinski <kuba@...nel.org>,
        Antoine Tenart <atenart@...nel.org>,
        Quentin Schulz <quentin.schulz@...tlin.com>,
        netdev@...r.kernel.org, Heiner Kallweit <hkallweit1@...il.com>,
        Andrew Lunn <andrew@...n.ch>,
        Florian Fainelli <f.fainelli@...il.com>,
        Russell King - ARM Linux admin <linux@...linux.org.uk>,
        Ioana Ciornei <ioana.ciornei@....com>,
        Maxim Kochetkov <fido_max@...ox.ru>,
        Bjarni Jonasson <bjarni.jonasson@...rochip.com>,
        Steen Hegelund <steen.hegelund@...rochip.com>,
        UNGLinuxDriver@...rochip.com
Subject: Re: [PATCH net-next 1/2] net: phylink: explicitly configure in-band
 autoneg for PHYs that support it

Am 2021-02-13 17:53, schrieb Michael Walle:
> Am 2021-02-13 01:36, schrieb Vladimir Oltean:
> But the Atheros PHY seems to have a problem with the SGMII link
> if there is no autoneg.
> No matter what I do, I can't get any traffic though if its not
> gigabit on the copper side. Unfortunately, I don't have access
> to an oscilloscope right now to see whats going on on the SGMII
> link.

Scrap that. It will work if I set the speed/duplex mode in BMCR
correctly. (I tried that before, but I shifted one bit. doh).

So that will work, but when will it be done? There is no
callback to configure the PCS side of the PHY if a link up is
detected.

-michael