LX2160ARDB – DPMAC3, DPMAC4 port not able to do the auto negotiation.

[prabhat_shukla]

 Hello,

I am working on one project where I have to log the data from device (like PC) to the Lx2160 ARDB board.

Data coming from PC is at 1Gps speed and I want to log the data at DPMAC3 and DPMAC4 which is by default configured at 10Gbps.

So here I want to auto negotiate the DPMAC3 and DPMAC4  port to 1Gbps speed. But it Is not happening. can anyone please help me here?

I know that we have two port (DPMAC17 and DPMAC18) for 1Gbps speed also but for my project I am using these two ports for some other purpose.

I have done below steps to verify this-

1. Creating new DPMAC instance-
   1. By script ./dynamic_dpl.sh DPMAC.3
   2. By Utility ls-addni DPMAC.3
   3. ls-listni shows below output –

dprc.1/dpni.1 (interface: eth0, end point: dpmac.3)

dprc.1/dpni.0 (interface: eth1, end point: dpmac.17)

1. assign the IP and netmask to new eth0
   1. ifconfig eth0 192.168.0.2 netmask 255.255.255.0 up

1. Print the property with ethtool command
   1. ethtool eth0 (if eth0 has been connected to new dpmac.3)

Settings for eth0:

        Supported ports: [ ]

        Supported link modes:   Not reported

        Supported pause frame use: No

        Supports auto-negotiation: No

        Supported FEC modes: Not reported

        Advertised link modes:  Not reported

        Advertised pause frame use: No

        Advertised auto-negotiation: No

        Advertised FEC modes: Not reported

        Speed: 10000Mb/s

        Duplex: Full

        Port: Twisted Pair

        PHYAD: 0

        Transceiver: internal

        Auto-negotiation: on

        MDI-X: Unknown

        Link detected: yes

This always configured as 10Gbps speed.

I have tried to change the speed and other parameter with ethool utility but it did not help.

Can you please guide what should I do here ?

Please let me know if you need any other information.

Thanks and Best Regards,

Prabhat

[ufedor]

> I want to auto negotiate the DPMAC3 and DPMAC4  port to 1Gbps speed. But it Is not happening.

Have you actually tried to connect 1Gbps Ethernet source into the J21 or J22?

What is the port behaviour in this case?

Please attach U-Boot and Linux logs for inspection.

[prabhat_shukla]

Yes I have connected my 1Gps Ethernet source into J21(MAC3) and J22(MAC4).

As mentioned above port behavior is set to 10Gbps and it is not connecting to my 1Gbps Ethernet source.

I tried to see the ping behavior with Mac3 and/or Mac4 and this is what I have observed –

192.168.0.11 is ip of my windows.

root@localhost:~# ping 192.168.0.11

PING 192.168.0.11 (192.168.0.11) 56(84) bytes of data.

From 192.168.0.9 icmp_seq=1 Destination Host Unreachable

From 192.168.0.9 icmp_seq=2 Destination Host Unreachable

From 192.168.0.9 icmp_seq=3 Destination Host Unreachable

^C

--- 192.168.0.11 ping statistics ---

6 packets transmitted, 0 received, +3 errors, 100% packet loss, time 5122ms

pipe 4

I am able to ping with MAC17 and MAC18 (these are 1Gbps port).

I have also attached uboot log for more reference.

Thank you

Best Regards,

Prabhat