> A more complex problem would be having a PHY driver for a device > that can be either an ethernet phy or some other phy.
I doubt that ever happens. You can have up to 32 different devices on an MDIO bus. Since an Ethernet PHY and a "some other sort of PHY" are completely different things, why would a hardware engineer place them on the same address? It is like saying your ATA controller and VGA controller share the same slot on the PCI bus... Andrew
