How to debug Ethernet connectivity

[Alexander Aring]

On Fri, Dec 06, 2013 at 01:18:52PM +0100, Atilla Filiz wrote:
> Sorry, figured it out. Just most verbose output is funny as well:
> :/ miitool -vvv /dev/mc13xxx
> 10 Mbit, half duplex, no link
>   registers for MII PHY:
>     0000 0000 0000 0000 0000 0000 0000 0000
>     0000 0000 0000 0000 0000 0000 0000 0000
>     0000 0000 0000 0000 0000 0000 0000 0000
>     0000 0000 0000 0000 0000 0000 0000 0000
>   product info: vendor 00:00:00, model 0 rev 0
>   basic mode:   10 Mbit, half duplex
>   basic status: no link
>   capabilities:
>   advertising:
> 

In my opinion you reading only zeros from bus. Maybe check your muxing
which Sascha already mentioned.

- Alex