Hi All, Is there something like ethtool in U-boot that I can use to see what the network negotiated too. This is a fairly cheap netgear switch so I do not have any diagnostics on it.
I will also have a look with wireshark when i get back to the lab to see if I can identify what is happening. Alex On Wed, 07 Jan 2009 07:52:58 -0500 Jerry Van Baren <gerald.vanba...@ge.com> wrote: > Wolfgang Denk wrote: > > Dear Ulf Samuelsson, > > > > In message <1231282371.32308.276.ca...@elrond.atmel.com> you wrote: > >> It was tracked down to the autoconfiguration of the > >> Ethernet PHY, so one of the PHYs ended up in > >> 100 Mbps Half Duplex (think that was the switch) > >> while the other PHY ended up in 100 MBps Full Duplex. > > > > That would most probably be a bug in the U-Boot ethernet driver, then. > > > > Best regards, > > > > Wolfgang Denk > > If auto-negotiation fails, the default is half duplex (10 or 100 - the > speed can be discovered independent of the autonegotiation by the encoding). > > Ulf's recollection that the switch was half duplex would indicate that > the cheap switch did not autonegotiate properly, but u-boot did. This > could be a u-boot bug (not setting up the negotiation properly), but > more likely would be a switch problem (not handling the u-boot auto-neg > options properly). > > gvb > -- -- --------------------------------------------- Loren A. Linden Levy Department of Physics 390 UCB University of Colorado Boulder, CO 80309-0390 Tel: 303-735-6146 (CU) / +049 040 8998 4789 (DESY) Fax: 303-492-3352 (CU) / +049 040 8998 4034 (DESY) Cell: 303-332-2768 (U.S.) / +049 (0)151 5496 1831 (Germany) Email: loren.lindenl...@colorado.edu url: http://up.colorado.edu/~lindenle _____________________________________________ --------------------------------------------- This email has been cryptographically signed. Search for "lindenle" at pgp.mit.edu to obtain my public key which can be used to verify the authenticity of this message. _____________________________________________ ---------------------------------------------
signature.asc
Description: PGP signature
_______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
