Subject: Re: [PATCH net-next 1/3] ethtool: Add 100base-FX link mode entries

From: Andrew Lunn <[email-masked]>
Date: Tue, 15 Sep 2020 22:21:13 +0200

On Tue, Sep 15, 2020 at 01:17:06PM -0500, Dan Murphy wrote:
> Add entries for the 100base-FX full and half duplex supported modes.
> 
> $ ethtool eth0
>         Supported ports: [ TP    MII     FIBRE ]
>         Supported link modes:   10baseT/Half 10baseT/Full
>                                 100baseT/Half 100baseT/Full
>                                 100baseFX/Half 100baseFX/Full
>         Supported pause frame use: Symmetric Receive-only
>         Supports auto-negotiation: No
>         Supported FEC modes: Not reported
>         Advertised link modes:  10baseT/Half 10baseT/Full
>                                 100baseT/Half 100baseT/Full
>                                 100baseFX/Half 100baseFX/Full

I thought this PHY could not switch between TP and Fibre. It has a
strap which decides? So i would expect the supported modes to be
either BaseT or BaseFX. Not both. Same for Advertised?

       Andrew