Re: [PATCH net-next v2 0/3] net: mdio: support dynamic OF device changes

quoted

If this was a hat on top of a SBC, with an EEPROM indicating what the
hat was, then maybe DT overlays would make sense. But from what you
have said, this is a fixed PCB design, nothing hot/cold plugable.

Some H616/H618 boards have the ethernet port on an expansion board:
http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/2W-expansion-board.html

I don't see a list of pins which go across the connector. Does the
MDIO bus go to the expansion board? Is the PHY on the expansion
board. It all looks passive to me.

	Andrew