On Sonntag, 6. Juli 2025 09:38:00 CEST Andrew Lunn wrote:
> > +&mdio {
> > +	lan8720a: ethernet-phy@1 {
> > +			compatible = "ethernet-phy-ieee802.3-c22";
> > +			reg = <1>;
> > +	};
> > +};
> 
> Just for clarification: The PHY is on the SOM? I've seen systems where
> the PHY is on the SOM, and the magnetics and RJ45 on the carrier
> board. I've also seen systems where the PHY, magnetics and RJ45 are on
> the carrier.

Yes that' the case here. The PHY is located on the SoM and the MDI signals
before any magnetics are on the SoM's Card-Edge. The magnetics are required
on the Carrier board (e.g. a MagJack or dedicated Transformer)
> 
>     Andrew