From: Matthew Garrett <mjg59@srcf.ucam.org>
To: Guenter Roeck <linux@roeck-us.net>
Cc: Darren Hart <dvhart@linux.intel.com>,
"Rafael J. Wysocki" <rjw@sisk.pl>,
Linus Walleij <linus.walleij@linaro.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
ACPI Devel Maling List <linux-acpi@vger.kernel.org>,
"H. Peter Anvin" <hpa@zytor.com>
Subject: Re: ACPI vs Device Tree - moving forward
Date: Sat, 24 Aug 2013 05:51:39 +0100 [thread overview]
Message-ID: <20130824045139.GA4840@srcf.ucam.org> (raw)
In-Reply-To: <52183A56.5020707@roeck-us.net>
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@srcf.ucam.org
next prev parent reply other threads:[~2013-08-24 4:51 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-08-20 19:26 ACPI vs Device Tree - moving forward Matthew Garrett
2013-08-20 20:51 ` Darren Hart
2013-08-20 20:57 ` Matthew Garrett
2013-08-20 21:03 ` Darren Hart
2013-08-20 21:13 ` Rafael J. Wysocki
2013-08-20 21:36 ` Guenter Roeck
2013-08-20 21:11 ` Rafael J. Wysocki
2013-08-20 23:29 ` Rafael J. Wysocki
2013-08-21 15:57 ` Linus Walleij
2013-08-21 16:09 ` Matthew Garrett
2013-08-21 23:11 ` Rafael J. Wysocki
2013-08-21 23:39 ` Matthew Garrett
2013-08-22 0:02 ` Rafael J. Wysocki
2013-08-22 0:03 ` Matthew Garrett
2013-08-23 23:25 ` Darren Hart
2013-08-23 23:38 ` Matthew Garrett
2013-08-23 23:45 ` Darren Hart
2013-08-24 0:13 ` Guenter Roeck
2013-08-24 1:10 ` Matthew Garrett
2013-08-24 1:47 ` Guenter Roeck
2013-08-24 2:38 ` Matthew Garrett
2013-08-24 2:55 ` Guenter Roeck
2013-08-24 3:06 ` Matthew Garrett
2013-08-24 4:45 ` Guenter Roeck
2013-08-24 4:51 ` Matthew Garrett [this message]
2013-08-24 5:30 ` Guenter Roeck
2013-08-26 9:32 ` Linus Walleij
2013-08-26 10:48 ` Graeme Gregory
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