Re: [PATCH v2 net-next 2/3] net: ethernet: cadence-macb: Add fallback to read DT provided caps

From: Nicolas Ferre
Date: Tue Dec 08 2015 - 11:22:37 EST

Le 08/12/2015 16:00, Arnd Bergmann a écrit :
> On Tuesday 08 December 2015 14:52:05 Neil Armstrong wrote:
>> Add 1:1 mapping of software defines caps parsing from DT in case the
>> generic macb compatible form is used.
>> These properties will provide support for futures implementations
>> only defined from DT without need to update the driver code to support
>> new variants.
>> Signed-off-by: Neil Armstrong <narmstrong@xxxxxxxxxxxx>
> Translating the Linux implementation specific configuration into
> DT properties directly is usually not the best way.
> Could we instead have a lookup table by compatible string to set the
> flags? It seems that there are lots of different flags but only a
> couple of different users of this IP block. Also, the fact that
> you are now adding yet another quirk tells me that the set you
> define today is unlikely to cover all the future requirements.

This is basically what I told Neil in my previous email.

I understand you point Neil, but I don't find it makes sense and Arnd
described it better that I did.
So please find a proper compatibility string and simply use it. What

Nicolas Ferre
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