tqm5200s phy link toggles between up and down

[Johannes Braun]

>> This is not really a new kernel.

Yes this is right. But it is the first Kernel which supports our
wireless card without problems.

>> 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.

According to the marvell website it is a switch with integrated phy.

> Here is an example:

> http://lxr.linux.no/#linux+v3.7.1/arch/powerpc/boot/dts/charon.dts#L129

I had a look at this example and compared it to my *.dtb file. The
difference was, the fixed-link tag in the section ethernet at 3000 { ...
};.
I added "fixed-link = <1 1 100 0 0>;" to my tqm5200.dtb and now it works.

I am new to powerpc development and I hope it is ok to ask what this
fixed-link with the numbers "1 1 100 0 0" does? Is it the address to
the PHY?

2012/12/18 Wolfgang Grandegger <wg at grandegger.com>:
> On 12/18/2012 10:57 AM, Wolfgang Grandegger wrote:
>> 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.
>
> Here is an example:
>
> http://lxr.linux.no/#linux+v3.7.1/arch/powerpc/boot/dts/charon.dts#L129
>
>> Note the the DSA also supports this chip.
>
> See http://lwn.net/Articles/302333/. But I think it lacks device tree
> support.
>
> Wolfgang.
>