Re: ACPI vs Device Tree - moving forward

[Guenter Roeck]

On 08/23/2013 08:06 PM, Matthew Garrett wrote:
> On Fri, Aug 23, 2013 at 07:55:31PM -0700, Guenter Roeck wrote:
>
> > Question is: Does this work _today_ with any existing driver, where
> > one interrupt is served through ACPI and another as 'standard' Linux
> > interrupt ? If yes, it must be working, and using fdt to describe
> > the interrupt mapping for the non-ACPI interrupt should not make
> > a difference. If no, the problem does not really have anything
> > to do with fdt.
>
> There's no such thing as an ACPI interrupt, it's just a data source in
> the same way that PnP used to be. _CRS refers to platform interrupts.
Ah, you are catching my lack of ACPI knowledge.

Rephrasing the question:

"What happens when you have an ACPI device that contains an interrupt in
 _CRS and contains a different interrupt in an embedded FDT block?"

Does the situation occur today, ie does it ever happen that one interrupt
for a device is specified (if that is the correct term) in _CRS and
another by some other means ?

Guenter

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