alias variable support

alias variable support

[Kushwaha Prabhakar-B32579]

Hi,

 Is there a way in dts to have alias for a variable just like we have alias for node.

For example for a node "abc"


            alias_comp = "comp-2.0"

		abc@3100 {
			#address-cells = <1>;
			#size-cells = <0>;
			cell-index = <1>;
			compatible = alias_comp
			reg = <0x3100 0x100>;
		};

Here alias_comp will be replaced by "comp-2.0" during compilation.

Regards,
Prabhakar

Re: alias variable support

[David Gibson]

On Fri, Dec 02, 2011 at 10:14:47AM +0000, Kushwaha Prabhakar-B32579 wrote:
> Hi,
> 
>  Is there a way in dts to have alias for a variable just like we have alias for node.
> 
> For example for a node "abc"
> 
> 
>             alias_comp = "comp-2.0"
> 
> 		abc@3100 {
> 			#address-cells = <1>;
> 			#size-cells = <0>;
> 			cell-index = <1>;
> 			compatible = alias_comp
> 			reg = <0x3100 0x100>;
> 		};
> 
> Here alias_comp will be replaced by "comp-2.0" during compilation.

That's not really an alias, or like one.

It is more like a named constant / variable.  We don't have support
for this, but it is something we'd like to add to dtc eventually.
It's just that no-one has had time to design, implement and come up
with a decent syntax for it.

-- 
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