> If I remember the Marvell specs correctly, there was some bit to switch the > complete register set to fibre mode.
Hi Heiner The Marvell PHY has a second page for Fibre. It mostly mirrors the normal registers, and you need to look at both pages to determine if copper or fibre has link, etc. Fibre has no auto-neg, so there is nothing to configure for that. For the Xilinx PHY the auto-neg ability should not be set, so i doubt phylib will offer the option. Andrew