netdev - Re: genphy_read_status() vs. 1000bT Pause capability

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Message-ID: <1490699484.3177.120.camel@kernel.crashing.org>
Date:   Tue, 28 Mar 2017 22:11:24 +1100
From:   Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:     Russell King - ARM Linux <linux@...linux.org.uk>
Cc:     Florian Fainelli <f.fainelli@...il.com>,
        Andrew Lunn <andrew@...n.ch>, netdev@...r.kernel.org
Subject: Re: genphy_read_status() vs. 1000bT Pause capability

On Tue, 2017-03-28 at 10:42 +0100, Russell King - ARM Linux wrote:
> The 1000X definitions are for 1000BaseX (fiber), not for 1000BaseT
> (copper).
> 
> I have a working setup here with gigabit pause.  The pause bits come
> from bits 11 and 10, just like for older copper PHYs.  Your link
> parter is indicating that it has no pause capability.  That means
> you can't use pause.

Interesting. I tried and it worked :-) Could be something funny in
the config of our switches.

Thanks for the explanation.

Cheers,
Ben.