From: ezequiel.garcia@free-electrons.com (Ezequiel Garcia)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 04/14] bus: mvebu-mbus: Add static window allocation to the DT binding
Date: Wed, 12 Jun 2013 18:36:21 -0300 [thread overview]
Message-ID: <20130612213620.GC23012@localhost> (raw)
In-Reply-To: <20130612212641.GB8625@obsidianresearch.com>
On Wed, Jun 12, 2013 at 03:26:42PM -0600, Jason Gunthorpe wrote:
> On Wed, Jun 12, 2013 at 06:12:22PM -0300, Ezequiel Garcia wrote:
>
[...]
> >
> > This departs considerably from what I'm aiming right now.
> >
> > Are you suggesting to not put *any* mapping in the mbus 'ranges' node in
> > the DT (other than internal-regs)?
>
> My view is that the ranges should be respected. If an address is
> present, it should be used, unless there is a conflict.
>
> If no address is present (unclear why anyone would do this, but OK)
> then demand allocate via the linux resource allocator through the
> of_bus stuff seems reasonable to me..
>
> Just to re-iterate Arnd's earlier comment: The DT representation
> must handle dynamic allocation, but we can defer implementing the
> kernel side until there is a need.
>
> It isn't clear to me there is a need.....
>
Right. And just to confirm: this kernel side dynamic implementation
will be completely independent of the MBus DT layout proposal.
So I think it's best to agree on this binding first.
I'll post a v2 with the progress I've made using the preprocessor.
--
Ezequiel Garc?a, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com
WARNING: multiple messages have this Message-ID (diff)
From: Ezequiel Garcia <ezequiel.garcia-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
To: Jason Gunthorpe
<jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Cc: Lior Amsalem <alior-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
Andrew Lunn <andrew-g2DYL2Zd6BY@public.gmane.org>,
Jason Cooper <jason-NLaQJdtUoK4Be96aLqz0jA@public.gmane.org>,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
Maen Suleiman <maen-eYqpPyKDWXRBDgjK7y7TUQ@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
Sebastian Hesselbarth
<sebastian.hesselbarth-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Subject: Re: [PATCH 04/14] bus: mvebu-mbus: Add static window allocation to the DT binding
Date: Wed, 12 Jun 2013 18:36:21 -0300 [thread overview]
Message-ID: <20130612213620.GC23012@localhost> (raw)
In-Reply-To: <20130612212641.GB8625-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
On Wed, Jun 12, 2013 at 03:26:42PM -0600, Jason Gunthorpe wrote:
> On Wed, Jun 12, 2013 at 06:12:22PM -0300, Ezequiel Garcia wrote:
>
[...]
> >
> > This departs considerably from what I'm aiming right now.
> >
> > Are you suggesting to not put *any* mapping in the mbus 'ranges' node in
> > the DT (other than internal-regs)?
>
> My view is that the ranges should be respected. If an address is
> present, it should be used, unless there is a conflict.
>
> If no address is present (unclear why anyone would do this, but OK)
> then demand allocate via the linux resource allocator through the
> of_bus stuff seems reasonable to me..
>
> Just to re-iterate Arnd's earlier comment: The DT representation
> must handle dynamic allocation, but we can defer implementing the
> kernel side until there is a need.
>
> It isn't clear to me there is a need.....
>
Right. And just to confirm: this kernel side dynamic implementation
will be completely independent of the MBus DT layout proposal.
So I think it's best to agree on this binding first.
I'll post a v2 with the progress I've made using the preprocessor.
--
Ezequiel García, Free Electrons
Embedded Linux, Kernel and Android Engineering
http://free-electrons.com
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next prev parent reply other threads:[~2013-06-12 21:36 UTC|newest]
Thread overview: 136+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-07 16:47 [PATCH 00/14] MBus device tree binding Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:47 ` [PATCH 01/14] bus: mvebu-mbus: Use pr_fmt Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:56 ` Thomas Petazzoni
2013-06-07 16:56 ` Thomas Petazzoni
2013-06-08 14:15 ` Jason Cooper
2013-06-08 14:15 ` Jason Cooper
2013-06-07 16:47 ` [PATCH 02/14] bus: mvebu-mbus: Factor out initialization details Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:47 ` [PATCH 03/14] bus: mvebu-mbus: Introduce device tree binding Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 19:10 ` Arnd Bergmann
2013-06-07 19:10 ` Arnd Bergmann
2013-06-07 19:44 ` Jason Gunthorpe
2013-06-07 19:44 ` Jason Gunthorpe
2013-06-07 19:53 ` Arnd Bergmann
2013-06-07 19:53 ` Arnd Bergmann
2013-06-07 20:09 ` Jason Gunthorpe
2013-06-07 20:09 ` Jason Gunthorpe
2013-06-07 21:15 ` Arnd Bergmann
2013-06-07 21:15 ` Arnd Bergmann
2013-06-08 0:26 ` Jason Gunthorpe
2013-06-08 0:26 ` Jason Gunthorpe
2013-06-08 17:29 ` Ezequiel Garcia
2013-06-08 17:29 ` Ezequiel Garcia
2013-06-07 16:47 ` [PATCH 04/14] bus: mvebu-mbus: Add static window allocation to the DT binding Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 19:01 ` Arnd Bergmann
2013-06-07 19:01 ` Arnd Bergmann
2013-06-07 20:00 ` Jason Gunthorpe
2013-06-07 20:00 ` Jason Gunthorpe
2013-06-07 21:07 ` Arnd Bergmann
2013-06-07 21:07 ` Arnd Bergmann
2013-06-08 18:38 ` Ezequiel Garcia
2013-06-08 18:38 ` Ezequiel Garcia
2013-06-09 1:45 ` Jason Gunthorpe
2013-06-09 1:45 ` Jason Gunthorpe
2013-06-09 14:39 ` Ezequiel Garcia
2013-06-09 14:39 ` Ezequiel Garcia
2013-06-11 13:57 ` Ezequiel Garcia
2013-06-11 13:57 ` Ezequiel Garcia
2013-06-11 15:26 ` Arnd Bergmann
2013-06-11 15:26 ` Arnd Bergmann
2013-06-11 21:50 ` Jason Gunthorpe
2013-06-11 21:50 ` Jason Gunthorpe
2013-06-11 22:22 ` Sebastian Hesselbarth
2013-06-11 22:22 ` Sebastian Hesselbarth
2013-06-11 23:02 ` Arnd Bergmann
2013-06-11 23:02 ` Arnd Bergmann
2013-06-11 23:08 ` Jason Gunthorpe
2013-06-11 23:08 ` Jason Gunthorpe
2013-06-12 7:37 ` Sebastian Hesselbarth
2013-06-12 7:37 ` Sebastian Hesselbarth
2013-06-11 22:34 ` Arnd Bergmann
2013-06-11 22:34 ` Arnd Bergmann
2013-06-11 22:58 ` Jason Gunthorpe
2013-06-11 22:58 ` Jason Gunthorpe
2013-06-11 23:10 ` Arnd Bergmann
2013-06-11 23:10 ` Arnd Bergmann
2013-06-12 11:14 ` Grant Likely
2013-06-12 11:14 ` Grant Likely
2013-06-12 20:45 ` Arnd Bergmann
2013-06-12 20:45 ` Arnd Bergmann
2013-06-12 21:12 ` Ezequiel Garcia
2013-06-12 21:12 ` Ezequiel Garcia
2013-06-12 21:26 ` Jason Gunthorpe
2013-06-12 21:26 ` Jason Gunthorpe
2013-06-12 21:36 ` Ezequiel Garcia [this message]
2013-06-12 21:36 ` Ezequiel Garcia
2013-06-12 21:52 ` Arnd Bergmann
2013-06-12 21:52 ` Arnd Bergmann
2013-06-12 22:02 ` Jason Gunthorpe
2013-06-12 22:02 ` Jason Gunthorpe
2013-06-12 22:20 ` Arnd Bergmann
2013-06-12 22:20 ` Arnd Bergmann
2013-06-12 22:24 ` Arnd Bergmann
2013-06-12 22:24 ` Arnd Bergmann
2013-06-15 16:03 ` Grant Likely
2013-06-15 16:03 ` Grant Likely
2013-06-12 20:02 ` Ezequiel Garcia
2013-06-12 20:02 ` Ezequiel Garcia
2013-06-12 20:12 ` Jason Gunthorpe
2013-06-12 20:12 ` Jason Gunthorpe
2013-06-12 21:50 ` Arnd Bergmann
2013-06-12 21:50 ` Arnd Bergmann
2013-06-12 11:07 ` Grant Likely
2013-06-12 11:07 ` Grant Likely
2013-06-12 11:43 ` Arnd Bergmann
2013-06-12 11:43 ` Arnd Bergmann
2013-06-12 11:54 ` Grant Likely
2013-06-12 11:54 ` Grant Likely
2013-06-12 11:58 ` Arnd Bergmann
2013-06-12 11:58 ` Arnd Bergmann
2013-06-12 10:52 ` Grant Likely
2013-06-12 10:52 ` Grant Likely
2013-06-09 13:42 ` Arnd Bergmann
2013-06-09 13:42 ` Arnd Bergmann
2013-06-09 14:34 ` Ezequiel Garcia
2013-06-09 14:34 ` Ezequiel Garcia
2013-06-09 15:37 ` Arnd Bergmann
2013-06-09 15:37 ` Arnd Bergmann
2013-06-12 10:48 ` Grant Likely
2013-06-12 10:48 ` Grant Likely
2013-06-11 13:31 ` Ezequiel Garcia
2013-06-11 13:31 ` Ezequiel Garcia
2013-06-11 15:02 ` Arnd Bergmann
2013-06-11 15:02 ` Arnd Bergmann
2013-06-07 16:47 ` [PATCH 05/14] bus: mvebu-mbus: Update the mbus-compatible node's ranges property Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-12 10:25 ` Grant Likely
2013-06-12 10:25 ` Grant Likely
2013-06-07 16:47 ` [PATCH 06/14] ARM: mvebu: Initialize MBus using the DT binding Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:47 ` [PATCH 07/14] ARM: mvebu: Remove the harcoded BootROM window allocation Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:47 ` [PATCH 08/14] memory: mvebu-devbus: Remove address decoding window workaround Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:47 ` [PATCH 09/14] ARM: mvebu: Add MBus to Armada 370/XP device tree Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:47 ` [PATCH 10/14] ARM: mvebu: Add BootROM " Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:47 ` [PATCH 11/14] ARM: mvebu: Relocate Armada 370/XP DeviceBus device tree nodes Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 19:18 ` Arnd Bergmann
2013-06-07 19:18 ` Arnd Bergmann
2013-06-07 16:47 ` [PATCH 12/14] ARM: mvebu: Remove device tree unused properties on A370 Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:56 ` Thomas Petazzoni
2013-06-07 16:56 ` Thomas Petazzoni
2013-06-08 14:18 ` Jason Cooper
2013-06-08 14:18 ` Jason Cooper
2013-06-07 16:47 ` [PATCH 13/14] ARM: mvebu: Relocate Armada 370 PCIe device tree nodes Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
2013-06-07 16:47 ` [PATCH 14/14] ARM: mvebu: Relocate Armada XP " Ezequiel Garcia
2013-06-07 16:47 ` Ezequiel Garcia
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