Re: ACPI vs Device Tree - moving forward

From: Matthew Garrett
Date: Fri Aug 23 2013 - 22:41:16 EST


On Fri, Aug 23, 2013 at 06:47:23PM -0700, Guenter Roeck wrote:
> On Sat, Aug 24, 2013 at 02:10:36AM +0100, Matthew Garrett wrote:
> > On Fri, Aug 23, 2013 at 05:13:45PM -0700, Guenter Roeck wrote:
> >
> > > Did the group conclude that the idea of FDT augmenting ACPI is not feasible ?
> >
> > I think expressing FDT in ACPI is feasible, I'm just not sure it's
> > desirable. We'd still end up with duplicate information and no mechanism
> > for drivers to handle both.
> >
> Not sure I understand what you are saying. My understanding of "augment"
> would be that there is ACPI information, and there is a separate FDT
> (or an FDT overlay) providing additional information. There should be
> no duplicate information in this model.

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

--
Matthew Garrett | mjg59@xxxxxxxxxxxxx
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