On Wed, May 29, 2024 at 04:28:16PM +0200, Andrew Lunn wrote: > > Qualcomm ethernet HW supports 2.5G speed in overclocked SGMII mode. > > we internally term it as OCSGMII. > > So it still does SGMII inband signalling? Not 2500BaseX signalling? It > is not actually compatible with 2500BaseX? > > > End goal of these patches is to enable SGMII with 2.5G speed support. > > The patch in these series enabled up SGMII with 2.5 for cases where we > > don't have external phy. ( mac-to-mac connectivity) > > So the other end needs to be an over clocked SGMII MAC, not 2500BaseX? > > > The new patch posted extends this for the case when the MAC has an > > external phy connected. ( hence we are advertising fr 2.5G speed by adding > > 2500BASEX as supported interface in phylink) > > And i assume it does not actually work against a true 2500BaseX > device, because it is doing SGMII inband signalling? I really hope the hardware isn't using any SGMII inband signalling at 2.5G speeds. Other devices explicitly state that SGMII inband signalling while operating the elevated 2.5G speed is *not* supported! -- RMK's Patch system: https://www.armlinux.org.uk/developer/patches/ FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
