This seems to be something trivial, but so far we're stumped. The AM35xx has the built-in DaVinci EMAC and the usual GPMC. Our board uses the EMAC coupled with an SMSC LAN8710 PHY for one port, and a secondary port provided by a LAN9221 wired up through the GPMC. The trouble is, if I enabled the SMSC PHY code in Linux, *both* ports try to use it. I suspect it would be better to use the actual driver rather than some generic default, but enabling it causes trouble. I get something like this: [ 1.119567] smsc911x: Driver version 2008-10-21 [ 1.126892] smsc911x-mdio: probed [ 1.130706] smsc911x smsc911x: eth0: attached PHY driver [SMSC LAN8700] (mii_bus:phy_addr=ffffffff:01, irq=-1) [ 1.142608] smsc911x smsc911x: eth0: MAC Address: xx:xx:xx:xx:xx:xx [ 1.184112] davinci_mdio davinci_mdio.0: davinci mdio revision 1.5 [ 1.190612] davinci_mdio davinci_mdio.0: detected phy mask fffffffe [ 1.197998] davinci_mdio.0: probed [ 1.201690] davinci_mdio davinci_mdio.0: phy[0]: device 0:00, driver SMSC LAN8710/LAN8720 See how both Ethernets picked it up? After this, sometimes I see some odd behavior, which makes perfect sense since that is NOT how its wired up. If I leave the PHY drivers out all together, I get: [ 1.347412] smsc911x: Driver version 2008-10-21 [ 1.354644] smsc911x-mdio: probed [ 1.358245] smsc911x smsc911x.0: eth0: attached PHY driver [Generic PHY] (mii_bus:phy_addr=0:01, irq=-1) [ 1.368560] smsc911x smsc911x.0: eth0: MAC Address: yy:yy:yy:yy:yy:yy:yy [ 1.416046] davinci_mdio davinci_mdio.2: davinci mdio revision 1.5 [ 1.422546] davinci_mdio davinci_mdio.2: detected phy mask fffffffe [ 1.429809] davinci_mdio.2: probed [ 1.433502] davinci_mdio davinci_mdio.2: phy[0]: device 2:00, driver unknown Generic? Yes, but it seems to work OK. Is there a way of forcing the LAN9221 to just use the Generic PHY, or perhaps the something internal? And would there be any benefit if I bother? I've got SMSC911X_FORCE_INTERNAL_PHY set in my flags in the board file, but that does not seem to be doing anything. Thanks in advance. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
