Could the DTS experts look at this?

[David Gibson]

On Mon, Feb 11, 2008 at 11:57:10AM -0600, Timur Tabi wrote:
> Arnd Bergmann wrote:
> 
> > Maybe we can introduce a more generic way of having conditional
> > device nodes in the tree that get knocked out in the boot wrapper.
> 
> I've been thinking about doing just this for quite some time now.  I've had a 
> few informal discussions without people about.
> 
> One idea is to allow attaching simple conditional expressions (like
> X is <, =, or > than Y) to a node.  It is the responsibility of the
> code that parses the device tree to assign values to X and Y.  For
> instance, they could be the names of U-Boot environment variables.
> If the expression is false, then the node is removed (or ignored)
> from the device tree.  If it's true, then it's kept in.

In the binary tree representation itself?  No way.

-- 
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