> + /* AXI 1G/2.5G ethernet IP has following synthesis options: > + * 1) SGMII/1000base-X only. > + * 2) 2500base-X only. > + * 3) Dynamically switching between (1) and (2), and is not > + * implemented in driver. > + */ > + > + if (axienet_ior(lp, XAE_ABILITY_OFFSET) & XAE_ABILITY_2_5G) How can we tell if the synthesis allows 3)? Don't we have a backwards compatibility issue here? Maybe there are systems which have been synthesised with 3), but are currently limited to 1) due to the driver. If you don't differentiate between 2 and 3, such systems are going to swap to 2) and regress. Andrew
