Hello all,
maybe someone can help me with this problem.
i have a custom am335x board, based on the BBB, but with two external ethernet pyhs.
The Problem: I connect two of my devices via LAN cable. After booting LAN communication is working.
Now i remove the cable on one of the devices, white for 5 seconds and plug in the cable again.
But the link is not coming up (No LED's up).
Connection one of the devices to complete different network devices (Not any on my designed HW), the link will become activated.
Only way to get the link up again, when two of my devices are connected is to reboot or to deactivate and then activate auto negotiation
Any hints?
Here is the ethtool output:
root@aaaa:~# ethtool eth0
Settings for eth0:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Speed: 100Mb/s
Duplex: Full
Port: MII
PHYAD: 0
Transceiver: external
Auto-negotiation: on
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000000 (0)
Link detected: no
root@bbbbb:~# ethtool eth1
Settings for eth1:
Supported ports: [ TP MII ]
Supported link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Supported pause frame use: Symmetric Receive-only
Supports auto-negotiation: Yes
Advertised link modes: 10baseT/Half 10baseT/Full
100baseT/Half 100baseT/Full
Advertised pause frame use: Symmetric Receive-only
Advertised auto-negotiation: Yes
Speed: 10Mb/s
Duplex: Half
Port: MII
PHYAD: 1
Transceiver: external
Auto-negotiation: on
Supports Wake-on: d
Wake-on: d
Current message level: 0x00000000 (0)
Link detected: no
