> NXP's LX2160ARDB platform currently has the following MDIO-PHY connection. > > MDIO-1 ==> one 40G PHY, two 1G PHYs(C45), two 10G PHYs(C22) > MDIO-2 ==> one 25G PHY It has been suggested that ACPI only support a one to one mapping. Each MAC has one MDIO bus, with one PHY on it. KISS. This clearly does not work for your hardware. So not only do we need to solve how PHY properties are described, we also need an equivalent of phy-handle, so a MAC can indicate which PHY it is connected to. So in effect, you seem to be heading towards a pretty full reproduction of the DT binding. Before you go too much further and waste too much of your time, you might want confirmation from the ACPI people this is not too advanced for what ACPI can do and they tell you to forget ACPI for this hardware and stick with DT. Andrew