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From: Segher Boessenkool <segher@kernel.crashing.org>
Subject: Re: [PATCH] [POWERPC] 4xx: Add aliases node to 4xx dts files
Date: Sun, 16 Dec 2007 23:44:50 +0100
To: David Gibson <david@gibson.dropbear.id.au>
Cc: linuxppc-dev@ozlabs.org, Stefan Roese <sr@denx.de>
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>> Hopefully some version that stores path strings in the properties
>> in /aliases, and not phandles.  Or does that current version of DTC
>> do that correctly already, and just has an inconvenient source
>> syntax?
>
> I don't think anyone's actually gone and generated phandles in
> /aliases, although it was suggested early on.  The syntax is
> 	foo = < &bar >;
> to generate a phandle and
> 	foo = &bar;
> to generate a path.

Ah, I see.

> I was a bit worried about confusion between these forms, but at least
> Kumar and myself came up with this syntax independently, which
> suggests it's not too surprising to most people, and no-one had any
> other suggestions.

I think I suggested it before, but anyway:

how about you write

	aliases {
		foo = "/the/path/to/foo";
	};

and then you can use  &foo  in the rest of the DTS to refer to the
phandle (or path string, as it turns out :-) ) of the node?  I.e.,
use the aliases node to _generate_ aliases.

Seems simpler than the current thing to me.


Segher