netdev - Re: [PATCH] net: dsa: mv88e6xxx: Allow MAC configuration for ports with internal PHY

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Message-ID: <20200622185225.GF405672@lunn.ch>
Date:   Mon, 22 Jun 2020 20:52:25 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Daniel Mack <daniel@...que.org>
Cc:     netdev@...r.kernel.org, vivien.didelot@...il.com,
        f.fainelli@...il.com, linux@...linux.org.uk
Subject: Re: [PATCH] net: dsa: mv88e6xxx: Allow MAC configuration for ports
 with internal PHY

On Mon, Jun 22, 2020 at 08:44:51PM +0200, Daniel Mack wrote:
> On 6/22/20 8:41 PM, Andrew Lunn wrote:
> > On Mon, Jun 22, 2020 at 08:34:43PM +0200, Daniel Mack wrote:
> >> Ports with internal PHYs that are not in 'fixed-link' mode are currently
> >> only set up once at startup with a static config. Attempts to change the
> >> link speed or duplex settings are currently prevented by an early bail
> >> in mv88e6xxx_mac_config(). As the default config forces the speed to
> >> 1000M, setups with reduced link speed on such ports are unsupported.
> > 
> > Hi Daniel
> > 
> > How are you trying to change the speed?
> 
> With ethtool for instance. But all userspace tools are bailing out early
> on this port for the reason I described.

So you mean ethtool -s devname advertise 0x001

set make it advertise 10BaseT Half?

    Andrew