Re: [PATCH] devicetree - document using aliases to set spi bus number.

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On 5/24/2016 11:32 AM, Mark Brown wrote:
> On Tue, May 24, 2016 at 08:03:48PM +0200, Christer Weinigel wrote:
>> On 05/24/2016 07:20 PM, Mark Brown wrote:
> 
>>> I'm not sure this is something we want to support at all, I can't 
>>> immediately see anything that does this deliberately in the SPI
>>> code and obviously the "bus number" is something of a Linux
>>> specific concept which would need some explanation if we were going
>>> to document it.  It's something I'm struggling a bit to see a
>>> robust use case for that isn't better served by parsing sysfs,
>>> what's the goal here?
> 
>> If this isn't something that should be in the Documentation/devicetree
>>  because it's not generig enough, where should Linux-specific
>> interpretations such as this be documented?
> 
> I'm not clear that we want to document this at all since I am not clear
> that there is a sensible use case for doing it.  I did ask for one but
> you've not articulated one in this reply.  I am much less gung ho than
> Grant on this one, even as a Linux specific interface it seems very
> legacy.
> 

The time for the use case was when the patch was accepted.

It is in the kernel, it is appropriate to document it.

-Frank
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