Hi Peter, Peter Tyser wrote: > In SGMII mode the link between a processor's internal TBI PHY and an > external PHY should always be 1000Mbps, full duplex. Also, the SGMII > interface between an internal TBI PHY and external PHY does not > support in-band auto-negotation. > > Previously, when configured for SGMII mode a TBI PHY would attempt to > restart auto-negotation during initializtion. This auto-negotation > between a TBI PHY and external PHY would fail and result in unusable > ethernet operation. > > Forcing the TBI PHY and and external PHY to link at 1000Mbps full duplex > in SGMII mode resolves this issue of auto-negotation failing. > > Note that 10Mbps and 100Mbps operation is still possible on the external > side of the external PHY even when SGMII is operating at 1000Mbps. > The SGMII interface still operates at 1000Mbps, but each byte of data > is repeated 100 or 10 times for 10/100Mbps and the external PHY handles > converting this data stream into proper 10/100Mbps signalling. > > Signed-off-by: Peter Tyser <pty...@xes-inc.com> > --- Applied to net repo.
thanks, Ben _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
