How to add platform specific data to a of_device

Robert Schwebel r.schwebel at
Mon Jul 16 16:51:44 EST 2007

On Sun, Jul 15, 2007 at 06:48:53AM +1000, Benjamin Herrenschmidt wrote:
> Your approach would work I suppose.... though it's a bit ugly.

Speaking of uggly, I'm still wondering why this oftree stuff for powerpc
must be soooo complicated. If you come from the ARM-linux world like we
do, the whole powerpc BSP stuff looks like a completely overengineered
piece of code, introducing complexity where it isn't necessary. But it
may be that it's just me not knowing powerpc kernel requirements deeply
enough :)

For most of the devices on for example the MPC5200B and MPC8260 I would
just model them as platform devices; there could be a simple

	oftree -> oftree-interpreter -> bunch of platform devices

mapping. Is there a reason why there is sooo much interaction of the
platform code with the oftree? We usually have the situation that, if
something goes wrong, you have to change

	- the driver
	- the platform code
	- the oftree

and they often contain redundant information (like names of oftree
nodes, which change more often than some people's panties).

 Dipl.-Ing. Robert Schwebel |
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