From: mbizon@freebox.fr (Maxime Bizon)
To: linux-arm-kernel@lists.infradead.org
Subject: [Ksummit-2013-discuss] ARM topic: Is DT on ARM the solution, or is there something better?
Date: Wed, 23 Oct 2013 20:46:22 +0200 [thread overview]
Message-ID: <1382553982.31058.10.camel@sakura.staff.proxad.net> (raw)
In-Reply-To: <20131023174458.GC5208@netboy>
On Wed, 2013-10-23 at 19:45 +0200, Richard Cochran wrote:
>
> Once I design my board, and it goes into production, the hardware is
> fixed. It doesn't change, and neither should the description of the
> hardware, also known as the DTB. If I have to research all of the
> ways
SOC support are never completely finished; subsystems are getting new
features.
It's possible to ship a product with a kernel version that does not
handle all the chip goodies, then want to upgrade the kernel later when
someone has written the driver for a previously unused hardware block.
the first iteration of your DTB would be incomplete, the bindings to
describe that hardware block would not exist inside it.
real life example with Marvell Kirkwood, hw crypto support was added 1
year after initial SOC support.
I'm happy I can use it now on existing boards by "just" upgrading the
kernel.
--
Maxime
next prev parent reply other threads:[~2013-10-23 18:46 UTC|newest]
Thread overview: 171+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-20 21:26 ARM topic: Is DT on ARM the solution, or is there something better? Stephen Warren
2013-10-20 22:08 ` [Ksummit-2013-discuss] " Mark Brown
2013-10-20 22:21 ` Stephen Warren
2013-10-21 1:00 ` Nicolas Pitre
2013-10-21 9:15 ` Thierry Reding
2013-10-21 14:57 ` Maxime Bizon
2013-10-21 17:07 ` Richard Cochran
2013-10-21 20:24 ` Stephen Warren
2013-10-22 9:24 ` Thierry Reding
2013-10-23 17:30 ` Richard Cochran
2013-10-23 19:06 ` Thierry Reding
2013-10-22 17:22 ` Jason Gunthorpe
2013-10-21 20:29 ` Stephen Warren
2013-10-21 20:40 ` Nicolas Pitre
2013-10-22 9:39 ` Thierry Reding
2013-10-22 15:04 ` Matt Porter
2013-10-22 17:13 ` Jason Gunthorpe
2013-10-22 17:49 ` Guenter Roeck
2013-10-23 8:06 ` Richard Cochran
2013-10-23 9:49 ` Thierry Reding
2013-10-23 17:16 ` Richard Cochran
2013-10-23 17:25 ` Matt Porter
2013-10-23 18:05 ` Richard Cochran
2013-10-23 18:57 ` Nicolas Pitre
2013-10-23 20:12 ` Matt Porter
2013-10-23 17:55 ` Nicolas Pitre
2013-10-23 18:13 ` Richard Cochran
2013-10-23 20:35 ` Thierry Reding
2013-10-23 17:29 ` Jason Gunthorpe
2013-10-23 17:45 ` Richard Cochran
2013-10-23 18:46 ` Maxime Bizon [this message]
2013-10-23 18:51 ` Richard Cochran
2013-10-23 19:12 ` Maxime Bizon
2013-10-24 9:52 ` Grant Likely
2013-10-24 11:33 ` Maxime Bizon
2013-10-24 11:47 ` David Woodhouse
2013-10-24 12:13 ` Maxime Bizon
2013-10-24 12:22 ` David Woodhouse
2013-10-24 12:22 ` David Woodhouse
2013-10-24 13:05 ` Maxime Bizon
2013-10-24 13:14 ` David Woodhouse
2013-10-24 13:46 ` Maxime Bizon
2013-10-24 19:52 ` Matt Porter
2013-10-24 20:11 ` Matt Sealey
2013-10-25 9:00 ` Stephen Warren
2013-10-24 12:23 ` Thierry Reding
2013-10-24 12:29 ` David Woodhouse
2013-10-24 13:00 ` Maxime Bizon
2013-10-24 13:10 ` David Woodhouse
2013-10-24 13:30 ` Maxime Bizon
2013-10-24 14:05 ` David Woodhouse
2013-10-24 14:19 ` Thierry Reding
2013-10-24 14:30 ` David Woodhouse
2013-10-24 14:38 ` Thierry Reding
2013-10-24 16:39 ` Nicolas Pitre
2013-10-24 16:45 ` David Woodhouse
2013-10-24 17:08 ` Nicolas Pitre
2013-10-24 18:15 ` jonsmirl at gmail.com
2013-10-24 14:32 ` Richard Cochran
2013-10-24 14:47 ` Thierry Reding
2013-10-24 15:37 ` Nicolas Pitre
2013-10-24 14:33 ` Maxime Bizon
2013-10-24 14:57 ` Thierry Reding
2013-10-24 16:27 ` Nicolas Pitre
2013-10-24 14:12 ` Thierry Reding
2013-10-24 14:22 ` David Woodhouse
2013-10-24 14:23 ` Thierry Reding
2013-10-24 14:38 ` David Woodhouse
2013-10-24 14:58 ` Thierry Reding
2013-10-24 19:58 ` Matt Porter
2013-10-24 23:54 ` Grant Likely
2013-10-25 8:52 ` Stephen Warren
2013-10-25 9:16 ` Thierry Reding
2013-10-23 17:47 ` Richard Cochran
2013-10-23 17:58 ` Nicolas Pitre
2013-10-23 18:02 ` Jason Gunthorpe
2013-10-23 18:23 ` Richard Cochran
2013-10-24 8:34 ` Thierry Reding
2013-10-24 15:00 ` Richard Cochran
2013-10-24 19:46 ` Matt Porter
2013-10-23 18:01 ` Guenter Roeck
2013-10-23 18:25 ` Jason Gunthorpe
2013-10-23 18:30 ` Richard Cochran
2013-10-23 18:54 ` Jason Gunthorpe
2013-10-24 8:06 ` Sascha Hauer
2013-10-24 8:17 ` Thierry Reding
2013-10-24 8:52 ` Sascha Hauer
2013-10-23 23:29 ` Ben Hutchings
2013-10-24 7:32 ` Richard Cochran
2013-10-24 9:35 ` Ben Hutchings
2013-10-24 12:02 ` Andre Heider
2013-10-24 8:01 ` Sascha Hauer
2013-10-24 8:11 ` Thierry Reding
2013-10-22 17:42 ` Nicolas Pitre
2013-10-22 18:21 ` Peter Maydell
2013-10-22 18:36 ` Nicolas Pitre
2013-10-22 19:16 ` Guenter Roeck
2013-10-22 20:12 ` Thierry Reding
2013-10-22 20:41 ` Nicolas Pitre
2013-10-22 21:39 ` Jason Gunthorpe
2013-10-23 8:50 ` Thierry Reding
2013-10-23 9:02 ` Thierry Reding
2013-10-22 20:42 ` Matt Porter
2013-10-23 10:04 ` Thierry Reding
2013-10-23 11:48 ` Peter Maydell
2013-10-23 16:29 ` Matt Porter
2013-10-22 6:47 ` David Brown
2013-10-20 23:11 ` Russell King - ARM Linux
2013-10-20 23:44 ` [Ksummit-2013-discuss] " Guenter Roeck
2013-10-20 23:51 ` Russell King - ARM Linux
2013-10-21 0:13 ` Guenter Roeck
2013-10-21 20:05 ` Stephen Warren
2013-10-22 9:45 ` Thierry Reding
2013-10-21 8:32 ` Sascha Hauer
2013-10-21 8:48 ` Russell King - ARM Linux
2013-10-21 9:27 ` Sascha Hauer
[not found] ` < CAF6AEGtt_2sStiZCNBp9btxevWghSwLZZBdN6ir8eUpX1FXrCQ@mail.gmail.com>
[not found] ` < 20131024072811.GS30088@pengutronix.de>
[not found] ` < CAF6AEGuEho9Ms7ifTE-EmBoQ-=_AXgvGcJxi5qEC0vsZ+H9C+A@mail.gmail.com>
2013-10-21 9:57 ` Russell King - ARM Linux
2013-10-21 10:24 ` Thierry Reding
2013-10-21 10:30 ` Russell King - ARM Linux
2013-10-21 10:41 ` Thierry Reding
2013-10-22 9:19 ` [Ksummit-2013-discuss] " Mark Brown
2013-10-21 20:09 ` Stephen Warren
2013-10-21 23:18 ` Sascha Hauer
2013-10-24 1:14 ` Rob Clark
2013-10-24 7:28 ` Sascha Hauer
2013-10-24 9:00 ` Thierry Reding
2013-10-24 9:21 ` Sascha Hauer
2013-10-24 21:21 ` Rob Clark
2013-10-25 9:24 ` Thierry Reding
2013-11-18 12:45 ` Russell King - ARM Linux
2013-11-18 15:37 ` Thierry Reding
2013-11-18 16:11 ` Russell King - ARM Linux
2013-11-18 16:18 ` Thierry Reding
2013-11-18 18:43 ` Mark Brown
2013-11-19 13:54 ` Grant Likely
2013-10-21 10:04 ` Thierry Reding
2013-10-21 10:57 ` [Ksummit-2013-discuss] " Laurent Pinchart
2013-10-21 10:00 ` Laurent Pinchart
2013-10-21 11:18 ` Sebastian Hesselbarth
2013-10-21 8:54 ` Thierry Reding
2013-10-21 20:19 ` Stephen Warren
2013-10-21 22:51 ` [Ksummit-2013-discuss] " Guenter Roeck
2013-10-22 10:27 ` James Hogan
2013-10-22 16:31 ` Jonathan Cameron
2013-10-22 16:49 ` Guenter Roeck
2013-10-22 20:35 ` Thierry Reding
2013-10-22 21:10 ` Guenter Roeck
2013-10-23 7:57 ` Thierry Reding
2013-10-23 16:01 ` Guenter Roeck
2013-10-23 21:07 ` Thierry Reding
2013-10-24 15:18 ` Guenter Roeck
2013-11-01 10:36 ` Thierry Reding
2013-11-01 13:30 ` Guenter Roeck
2013-10-22 20:48 ` Thierry Reding
2013-10-22 10:25 ` Thierry Reding
2013-10-22 21:44 ` Matt Sealey
2013-10-23 11:41 ` Peter Maydell
2013-10-23 23:02 ` [Ksummit-2013-discuss] " Rob Herring
2013-11-18 12:26 ` Thierry Reding
2013-11-18 13:40 ` Grant Likely
2013-11-18 13:57 ` Mark Brown
2013-11-18 15:29 ` Thierry Reding
2013-11-18 15:50 ` Mark Brown
2013-11-18 16:06 ` Thierry Reding
2013-11-18 17:16 ` Stephen Warren
2013-11-19 9:35 ` Thierry Reding
2013-11-19 17:27 ` Stephen Warren
2013-11-20 13:29 ` Thierry Reding
2013-11-18 18:35 ` Mark Brown
2013-11-19 9:11 ` Thierry Reding
2013-11-19 10:16 ` Mark Brown
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