Re: dtc: import latest upstream dtc

[Stephen Warren]

On 10/10/2012 11:09 AM, Rob Herring wrote:
> On 10/09/2012 04:16 PM, Stephen Warren wrote:
>> On 10/01/2012 12:39 PM, Jon Loeliger wrote:
>>>>
>>>> What more do you think needs discussion re: dtc+cpp?
>>>
>>> How not to abuse the ever-loving shit out of it? :-)
>>
>> Perhaps we can just handle this through the regular patch review
>> process; I think it may be difficult to define and agree upon exactly
>> what "abuse" means ahead of time, but it's probably going to be easy
>> enough to recognize it when one sees it?
> 
> Rather than repeating things over and over in reviews, we should
> document at least rules we can easily agree on and then add to it when
> people get "creative." Also, I can't keep up with every single binding
> review as is, and this could just add another level of complexity to the
> review. A few off the top of my head and from the thread discussion:
> 
> - Headers must be self contained with no outside (i.e. libc, kernel,
> etc.) header dependencies.
> - No kernel kconfig option usage
> - No gcc built-in define usage
> - No unused items (i.e. externs, structs, etc.)

> - No macro concatenation

That seems to be potentially a very useful feature; I have no idea why
we would ban that; it isn't banned in C code in the kernel is it?

> - No macros for strings or property names

Property names I can understand. Property values - I can perhaps see a
use-case for...

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