On Thursday 10 March 2005 17:03, Eugene Surovegin wrote: > On Thu, Mar 10, 2005 at 11:06:53AM +0100, Gerhard Jaeger wrote: > > the patch has been posted in October last year (wow, thought it was in > > december or so): > > http://ozlabs.org/pipermail/linuxppc-embedded/2004-October/015811.html > > > > I think it needs some cleanup to apply correctly, but the issue is still > > the same - the RGMII bridge needs to be setup again after the EMAC has > > been reset. This problem occurs, when the speed is != 100Mbs, then > > the clocking for the phy is not correct. > > I have attached an updated patch, which first checks the PHY speed, then > > according to that speed the RGMII and ZMII will be setup... > > [snip] > > OK, from quick look it seems that this is infamous problem with PHYs > which don't generate Rx clock if there is no link. > > Current driver works sometimes probably just by luck. > > Gerhard, there is an experimental NAPI driver for 4xx at > http://kernel.ebshome.net (for current 2.4 & 2.6 BK trees). I recently > added full 440GX support. We (Matt and I) are thinking about > scraping the current driver and using my new version sometimes in the > future. It'd be great if you could find some time and try this new > driver on your board. Enable "PHY Rx clock workaround" in driver > config. > > Feel free to contact me directly if you have any problems with this > driver (e.g. applying patch to an older kernel version, etc). > Eugene, I will give it a try ASAP. As we are using a heavily patched 2.4 kernel on the customers board, where came up, it might took some time for making it work - but I'll keep you informed.
Thanx Gerhard -- Gerhard Jaeger <gjaeger at sysgo.com> SYSGO AG Embedded and Real-Time Software www.sysgo.com | www.elinos.com | www.pikeos.com | www.osek.de
