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

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Message-ID: <b8a67f7d-9854-9854-3f53-983dd4eb8fda@zonque.org>
Date:   Mon, 22 Jun 2020 20:44:51 +0200
From:   Daniel Mack <daniel@...que.org>
To:     Andrew Lunn <andrew@...n.ch>
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 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.


Thanks,
Daniel