[PATCH 8/9 V3] Add documentation for the new DTS language.

[David Gibson]

On Thu, Oct 02, 2008 at 07:17:05PM -0600, M. Warner Losh wrote:
> In message: <20081003002337.GB3002 at yookeroo.seuss>
>             David Gibson <david at gibson.dropbear.id.au> writes:
> : On Thu, Oct 02, 2008 at 01:50:04PM -0600, M. Warner Losh wrote:
> : > In message: <20081002152242.GB22258 at ld0162-tx32.am.freescale.net>
> : >             Scott Wood <scottwood at freescale.com> writes:
> : > : On Thu, Oct 02, 2008 at 11:18:00AM +1000, David Gibson wrote:
> : > : > > I vote against anything similar to the C preprocessor.
> : > : > 
> : > : > Why?
> : > : 
> : > : It's not nearly as powerful as the semantic approach, and it is
> : > : syntactically clumsy (I do *not* want to have to put a backslash at the
> : > : end of every line within a macro, for example).
> : > 
> : > And there are no looping constructs at all in CPP.  You flat out can't
> : > do a generalized for loop with the macro language, for example.  Its
> : 
> : But we can put looping constructs into the expression support which
> : macros can then use.
> : 
> : > symbols also do not map 1-1/onto symbols used by the dts files.  It
> : > can only grok macros you define for it, so it has no way of knowing
> : > many useful things that dts just knows.
> : 
> : Uh.. I'm not sure what you mean by this.
> 
> I mean that identifiers have # in them in the dts language.  cpp deals
> with identifiers that are similar to, but not the same thing as dts.

No.  Property and node names can have # in them in the dts.  I don't
think of those as identifiers - bare propnodenames are only recognized
in limited contexts.

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson