tqm5200s phy link toggles between up and down

Wolfgang Grandegger wg at grandegger.com
Tue Dec 18 20:57:42 EST 2012

On 12/18/2012 10:44 AM, Johannes Braun wrote:
> Hello,
> I hope someone could help me with my problem. Currently I am porting
> a new kernel (3.3.8) for a tqm5200s based board.

This is not really a new kernel.

> The previous kernel was 2.6.23. The new kernel version is needed because
> of support for a wireless card.
> The new kernel has problems with my ethernet PHY. The problem occurs only
> with our hardware. Not with the TQ eval board.
> The eval board uses a Intel PHY. Our board uses a Marvel 88E6085 PHY.

Is it a PHY or a switch? If is a switch you need to configure a fixed
link to the switch. This can be done via dts file.

Note the the DSA also supports this chip.


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