GPMC in device tree

Hello,

I would please like to ask if describing flash nor used with GPMC,
whould be done as described in:
https://www.kernel.org/doc/Documentation/devicetree/bindings/mtd/gpmc-nor.txt
It is described in the above link as "TI's GPMC", so I'm not sure if
it is relevent for powerpc too.

Thank you,
Ran