> So do we need to introduce a new interface type > PHY_INTERFACE_MODE_2500SGMII or is there a way to deal with 2.5G > SGMII ?
And just adding to what Florian said, you don't just add a new define like this, you also need to add a user of it. Posting your MAC and PHY driver making use of this symbol will make it a lot clearer why it is needed and how it should be used. Andrew