On Wednesday 01 June 2011, Grant Likely wrote:

quoted

Shouldn't the hierarchy in linux reflect the h/w? It seems a bit pointless
to me to create a device just to create another device. amba_bus is already
a bit strange in that it is not really a bus type, but a certain class of
peripherals.

I'd like to hear Grant's thoughts on this.

AMBA and platform_devices are "special" in that they don't have
requirements on their parent device.  I see absolutely zero issue with
having platform_device and amba_device as siblings.

Hmm, if we accept that platform and AMBA devices are just different from
all the others, maybe we can do a simpler solution and just hardcode that
difference in the of_platform_bus_create function. It probably doesn't
hurt if we grow a handful of these at most, as long as we wouldn't add
code for a lot of different bus types to the common probing function.

	Arnd