Re: ACPI vs Device Tree - moving forward

[Matthew Garrett]

On Fri, Aug 23, 2013 at 09:45:10PM -0700, Guenter Roeck wrote:

> "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 ?

The only case I can think of is PCI, where we ignored the ACPI-provided 
resources until fairly recently. That was a somewhat reasonable thing to 
do, since the hardware still had to support pre-ACPI operating systems 
and so the non-ACPI information sources were typically correct.

Other than that, I think we always trust the ACPI data.

-- 
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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