AM6548: MII to MII communication ( PHY less)

Hi,

We are using AM6548 in one of automotive product design. one more micro processor is also available on the same PCB. We have connected PRU_RGMII bus to other micro processor MII bus directly with out PHY device, because both micro processors are on the same board. 

We are using Linux SDK provided by you. What modifications required in source code to establish communication between two processors with RGMII / MII bus without PHY. 

Shall we get any document which explains PHY less communication.

Please suggest solution.

Regards

Ram murthy