netdev - RE: DPAA Ethernet traffice troubles with Linux kernel

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Date:   Tue, 16 Jan 2018 17:07:53 +0000
From:   Madalin-cristian Bucur <madalin.bucur@....com>
To:     Andrew Lunn <andrew@...n.ch>, mad skateman <madskateman@...il.com>
CC:     Christian Zigotzky <chzigotzky@...osoft.de>,
        Joakim Tjernlund <Joakim.Tjernlund@...inera.com>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: DPAA Ethernet traffice troubles with Linux kernel

> -----Original Message-----
> From: netdev-owner@...r.kernel.org [mailto:netdev-owner@...r.kernel.org]
> On Behalf Of Andrew Lunn
> Sent: Tuesday, January 16, 2018 5:04 PM
> To: mad skateman <madskateman@...il.com>
> Cc: Christian Zigotzky <chzigotzky@...osoft.de>; Joakim Tjernlund
> <Joakim.Tjernlund@...inera.com>; linuxppc-dev@...ts.ozlabs.org; Madalin-
> cristian Bucur <madalin.bucur@....com>; netdev@...r.kernel.org
> Subject: Re: DPAA Ethernet traffice troubles with Linux kernel
> 
> > When i use mii-tool too Kick the tranceiver... it comes alive.. i can
> > ping the eth0 itself
> >
> > root@...00LNX:/home/skateman# mii-tool -R eth0
> > resetting the transceiver...
> > root@...00LNX:/home/skateman# ping 192.168.22.44
> > PING 192.168.22.44 (192.168.22.44) 56(84) bytes of data.
> > 64 bytes from 192.168.22.44: icmp_seq=1 ttl=64 time=0.045 ms
> > 64 bytes from 192.168.22.44: icmp_seq=2 ttl=64 time=0.046 ms
> > 64 bytes from 192.168.22.44: icmp_seq=3 ttl=64 time=0.047 ms
> > 64 bytes from 192.168.22.44: icmp_seq=4 ttl=64 time=0.048 ms
> 
> What PHY driver are you using?
> 
> This smells a bit like an RGMII-ID problem.
> 
>      Andrew

Hi Andrew,

>From another thread[1] on the same topic:

> I am not sure what PHY hardware/configuration you are using on the
> DS and RDB platforms, but I can confirm that AmigaONE X5000/20
> (Cyrus Motherboard with p5020 SoC), has dTSEC 4 and dTSEC 5
> wired to two Micrel KSZ9021RN Gigabit Ethernet PHYs, using the
> RGMII protocol.

[1] https://www.spinics.net/lists/netdev/msg478062.html