Hi Richard > The only other docs that I have is a PDF of the register layout, but I > don't think I can redistribute that. Actually, there really isn't any > detail in that doc at all. O.K, so lets do the 20 questions approach. As far as i can see, this is not an MDIO device. It is not connected to the MDIO bus, it has no MDIO registers, you don't even pass a valid MDIO address in device tree. It it actually an MII bus snooper? Does it snoop, or is it actually in the MII bus, and can modify packets, i.e. insert time stamps as frames pass over the MII bus? When the driver talks about having three ports, does that mean it can be on three different MII busses? Thanks Andrew -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html