[PATCH] of: Add a reg-names property to name reg entries

On 10/25/2011 12:29 PM, Segher Boessenkool wrote:

quoted

quoted

+		compatible = "ti,mcasp";
+		reg =<0 0x10 0x10>,<0 0x20 0x10>,
+		<1 0x10 0x10>,<1 0x20 0x10>;
+		reg-names = "mpu", "dat",
+			    "dma", "dma_dat";

Hmm for some systems looks like this can also solve how to pass the
mux signal names cleanly from DT.

What problem does any of this solve?  The device binding for the
"mcasp" device will have to describe the possible "reg-names", and
what those mean; but the binding already has to describe its "reg"
property anyway.

What this solve is the ability to use the platform_get_resource_byname 
directly to retrieve the proper register base address. The binding is 
just a text description that the driver will not be able to use 
directly. It will have to get the resource using an abstract index.
It thus removes a level of indirection that is error prone and useless 
most of the time.

Benoit