We are trying to bring up a new board with the DP83867IR Ethernet phy and after reset to the device, we are seeing MDIO be held low. The voltages look correct and the phy will connect to a switch, but we can't talk from the processor to the Phy. MDIO has a 1.5K pull-up. On another board I cut our phy out of the loop and white-wired to MDIO, MDC, and Gnd to the DP8367 evaluation board. Here our drivers were able to read register over the MDIO interface. This tells me the problem is with our DP83867 phy.
Any ideas what to look at or why MDIO is held low?
