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.
You do not have to put it in the device tree for that, the device
driver can implement this itself if it cares.
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.
Your reg-names are abstract identifiers just as well.
It thus removes a level of indirection that is error prone and
useless most of the time.
It *adds* a level of indirection. I doubt it helps prevent errors
either, but who knows.
Segher
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