Re: [PATCH 3/3] First cut at PReP support for arch/powerpc

On Fri, Aug 03, 2007 at 02:55:16PM -0700, Yoder Stuart-B08248 wrote:

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+		MPIC: interrupt-controller@d {
+			device_type = "open-pic";

device_type = "interrupt-controller".

Not according to the binding in booting-without-of.txt

My understanding here, though possibly flawed, is that the current
implementation has "open-pic" but _should_ have "interrupt-controller"
as that is the officially correct name.

I _think_ this means we need a transitional period where we update
the code to look for "interrupt-controller", and obsoletedly, looks
for the "open-pic", while we transition to the new, correct name.

"open-pic" is the correct value for the device_type property.
See the binding at:
http://playground.sun.com/1275/bindings/chrp/chrp1_8a.ps
That is the definition for open pic interrupt controllers (AFAIK).

I am not aware of any official binding with "interrupt-controller" 
as the device_type.

That's what I thought.

However, the interrupt mapping spec says that all interrupt
controller (regardless of device_type) must have a 
property named "interrupt-controller" to identify
the device node as an interrupt controller and root of
a interrupt tree.
See: http://playground.sun.com/1275/practice/imap/imap0_9d.html

Ah, yes.  Added to both the mpic and 8259.

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