From: Arnd Bergmann <arnd@arndb.de>
To: devicetree-discuss@lists.ozlabs.org
Cc: Mark Salter <msalter@redhat.com>,
Grant Likely <grant.likely@secretlab.ca>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 06/24] C6X: devicetree
Date: Tue, 13 Sep 2011 08:43:56 +0200 [thread overview]
Message-ID: <6360771.ouEC5EKNMR@wuerfel> (raw)
In-Reply-To: <1315869636.11280.26.camel@deneb.redhat.com>
On Monday 12 September 2011 19:20:35 Mark Salter wrote:
> On Mon, 2011-09-12 at 14:11 -0600, Grant Likely wrote:
> > On Wed, Aug 31, 2011 at 05:26:41PM -0400, Mark Salter wrote:
> > > + interrupt-controller;
> > > + #interrupt-cells = <1>;
> > > + compatible = "ti,c64x+core-pic";
> >
> > The interrupt controller isn't addressable? Is it integrated into
> > the CPU?
>
> Yes, that core controller is controlled through registers accessed
> with special-purpose instructions, not MMIO. Other controllers, like
> megamodule and some as-yet unimplemented use MMIO.
Are these instructions specific to the interrupt controller or
do they access a register space that can contain arbitrary
devices?
If there is a separate address space for special devices, it might
be good to describe that in the device tree, like we do for PCI
I/O space.
Arnd
next prev parent reply other threads:[~2011-09-13 6:44 UTC|newest]
Thread overview: 49+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-08-31 21:26 [PATCH v2 00/24] C6X: New architecture patch set Mark Salter
2011-08-31 21:26 ` [PATCH 01/24] fix default __strnlen_user macro Mark Salter
2011-08-31 23:30 ` Ryan Mallon
2011-09-01 1:38 ` Mark Salter
2011-09-01 1:54 ` Ryan Mallon
2011-09-01 19:23 ` Mark Salter
2011-09-01 23:34 ` Ryan Mallon
2011-08-31 21:26 ` [PATCH 02/24] fixed generic page.h for non-zero PAGE_OFFSET Mark Salter
2011-08-31 21:26 ` [PATCH 03/24] add ELF machine define for TI C6X DSPs Mark Salter
2011-08-31 21:26 ` [PATCH 04/24] C6X: build infrastructure Mark Salter
2011-08-31 21:26 ` [PATCH 05/24] C6X: early boot code Mark Salter
2011-08-31 21:26 ` [PATCH 06/24] C6X: devicetree Mark Salter
2011-09-12 20:11 ` Grant Likely
2011-09-12 23:20 ` Mark Salter
2011-09-13 6:43 ` Arnd Bergmann [this message]
2011-09-13 12:39 ` Mark Salter
2011-09-13 15:33 ` Arnd Bergmann
2011-09-13 17:54 ` Grant Likely
2011-09-13 20:11 ` Arnd Bergmann
2011-09-13 22:26 ` Mark Salter
2011-08-31 21:26 ` [PATCH 07/24] C6X: memory management and DMA support Mark Salter
2011-08-31 21:26 ` [PATCH 08/24] C6X: process management Mark Salter
2011-08-31 21:26 ` [PATCH 09/24] C6X: signal management Mark Salter
2011-09-01 9:50 ` Matt Fleming
2011-09-01 19:15 ` Mark Salter
2011-08-31 21:26 ` [PATCH 10/24] C6X: time management Mark Salter
2011-09-09 14:19 ` Thomas Gleixner
2011-09-12 14:12 ` Mark Salter
2011-09-13 1:16 ` john stultz
2011-09-13 3:18 ` Mark Salter
2011-09-13 3:44 ` john stultz
2011-08-31 21:26 ` [PATCH 11/24] C6X: interrupt handling Mark Salter
2011-09-09 14:33 ` Thomas Gleixner
2011-09-12 14:27 ` Mark Salter
2011-09-12 14:30 ` Thomas Gleixner
2011-09-12 20:01 ` Grant Likely
2011-08-31 21:26 ` [PATCH 12/24] C6X: syscalls Mark Salter
2011-08-31 21:26 ` [PATCH 13/24] C6X: traps Mark Salter
2011-08-31 21:26 ` [PATCH 14/24] C6X: clocks Mark Salter
2011-08-31 21:26 ` [PATCH 15/24] C6X: cache control Mark Salter
2011-08-31 21:26 ` [PATCH 16/24] C6X: loadable module support Mark Salter
2011-08-31 21:26 ` [PATCH 17/24] C6X: ptrace support Mark Salter
2011-08-31 21:26 ` [PATCH 18/24] C6X: headers Mark Salter
2011-08-31 21:26 ` [PATCH 19/24] C6X: library code Mark Salter
2011-08-31 21:26 ` [PATCH 20/24] C6X: general SoC support Mark Salter
2011-08-31 21:26 ` [PATCH 21/24] C6X: specific " Mark Salter
2011-08-31 21:26 ` [PATCH 22/24] C6X: EMIF - External Memory Interface Mark Salter
2011-08-31 21:26 ` [PATCH 23/24] C6X: Power and Sleep Controller Mark Salter
2011-08-31 21:34 ` [PATCH v2 00/24] C6X: New architecture patch set Mark Salter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=6360771.ouEC5EKNMR@wuerfel \
--to=arnd@arndb.de \
--cc=devicetree-discuss@lists.ozlabs.org \
--cc=grant.likely@secretlab.ca \
--cc=linux-kernel@vger.kernel.org \
--cc=msalter@redhat.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox