question about fs_enet driver

Is there a way to configure the fs_enet driver to use rmii mode for one 
of the ethernet devices in
my device tree?  I know other drivers support a keyword in the device 
tree (such as phy-connection-type = "rmii")
but the following line of code in fs_enet-main.c (fs_init_phy()) 
suggests to me that mii mode is hard-coded for this driver:

        phydev = phy_connect(dev, fep->fpi->bus_id, &fs_adjust_link, 0,
                PHY_INTERFACE_MODE_MII);

am I correct in my understanding, or is this set up a different way for 
the fs_enet driver?

thanks

Ken