Hi Trent, [snip] > > Even though it's not immediately clear there's a TI PHY as there's > > no PHY node at all but see what we have in the bootlog: > > > NatSemi DP83865 stmmac-0:01: attached PHY driver [NatSemi DP83865] ... > > > > I guess I need to add PHY node and use suggested by you "rgmii-id", right? > > The dp83865 is a different driver than the dp83867. My check of it > didn't find any evidence of it doing anything w.r.t. rgmii clock skew. > A quick check of dp83865 datasheet shows it's a very different device > than the dp83867. Ok so I'll just add a generic PHY node to AXS10x motherboard. > > > work, then drop, then come up as 1000 mbps and work. This took about > > > 7-8 seconds instead of about 3 seconds. With a switch interposed > > > between the devices, the Intel PHY does not see a down link (the switch > > > is on), so this doesn't happen. Probably not your problem, as I could > > > only see this in u-boot by the time Linux has booted the phy will have > > > activated the link and gotten past this screwy 10 mbps thing. > > > > Hm, that's interesting... I think at least on some of our machines we do > > have Intel controllers and most probably Intel PHYs as well so that might > > very well be the case. Do you know if that "ultra low power mode" could be > > somehow easily disabled? > > If the machine with the intel phy is running windows, there is a driver > option (device manager, properties, advanced..) for it. Driver version > 12.15.22.6 from 4/5/2016 does not have a control, while version > 12.17.10.6 from 4/3/2018 does have the control. Those are my only two > data points. I don't know how to control this feature from Linux. > Never used an Intel phy on an embedded device. Thanks for this info. Our servers are running Linux so we'll see. Though I just understood that we connect our boards via a switch typically so it shouldn't be a problem of "ultra low-power" anything. Anyways thanks for your input. -Alexey _______________________________________________ linux-snps-arc mailing list linux-snps-arc@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-snps-arc
