Hi Ben! I've made LAN8720 work with AT91SAM9G45 MPU. The problem was in a wrong address assigning during the PHY reset. The PHY has internal pull-down on the PHYAD0 line but the init code for AT91 turns off processor's pull-up during PHY reset only for a few lines and they are not PHYAD0. So I disabled also the processor's pull-up to the right line and the PHY got alive. I've tested tftp - works perfect!
Thank you for the help! 2010/2/8 Ben Warren <biggerbadder...@gmail.com> > Hi Maxim, > > On 2/7/2010 1:32 PM, Maxim Podbereznyi wrote: > >> Hi all! >> >> I need enable the support of the new SMSC Ethernet PHY LAN8720 in >> AT91SAM based system. Can anybody give me a piece of advice how I can >> do it? >> >> >> > I don't have any direct experience with either this PHY or AT91SAM, but a > cursory glance of the PHY datasheet makes it seem that there's nothing > special here, so it might just work without modification. Do you have a > working reference board that has a different PHY that this can be compared > to? > >> Any help is appreciated! >> >> Regards, >> Max >> _ >> >> > regards, > Ben >
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