On Mon, Jul 10, 2023 at 08:56:18PM +0300, Vesa Jääskeläinen wrote: > Add support to specify either class A or class B (default) for line driver. > > Class A: full MLT-3 on both Tx+ and Tx– > Class B: reduced MLT-3 > > By default the PHY is in Class B mode. Hi Vesa Do you have a reference to 802.3 or some other document which describes these. How does reduced differ from full? Is this really a hardware property of the board? Thanks Andrew