[U-Boot] Ethernet not found on Arria 5.

[Marek Vasut]

On 03/04/2016 10:20 AM, Bakhvalov, Denis (Nokia - PL/Wroclaw) wrote:
> Dear U-Boot support,
> 
> I'm migrating to new U-Boot version from 2013 and now have Ethernet
> not working both in U-Boot and in Linux (after booting).
> 
> I have custom board with Altera Arria 5 SocFpga onboard. U-Boot
> version: 2016.03-rc1
> 
> In logs I can see:
> 
> Net:   No ethernet found.
> 
> With more verbose:
> 
> designware_eth_probe, iobase=ff702000, priv=1eb286a0 
> ethernet at ff702000 PHY: 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
> 19 20 21 22 23 24 25 26 27 28 29 30 31 not found 
> designware_eth_probe, ret=-19 No ethernet found.
> 
> Ethernet connection inside my board is following: [CPU] ----- [EMAC1]
> ----- [ FPGA ] ---- [ PHY(KSZ8081MNXIA) ]
> 
> I already tried to configure FPGA from Linux environment but it
> didn't solved the problem. My U-Boot configuration was cloned from
> socfpga dev kit board with some modifications. But Ethernet
> configuration I didn't touched yet.
> 
> So far I tried to debug it with no success. Also I played with env
> variables (ethact, ethaddr) and CONFIG_PHY_ADDR with no success as
> well. Something tells me that I have incorrect EMAC configuration but
> I don't know how to tackle it.
> 
> Please help me identify the problem or at least give me some hints
> where to look to solve my issue.

It seems like your PHY is not recongnised. Could there be some reset
line which is left asserted ?

Best regards,
Marek Vasut