From: "H. Peter Anvin" <hpa@zytor.com>
To: Guenter Roeck <linux@roeck-us.net>
Cc: David Gibson <david@gibson.dropbear.id.au>,
Mark Rutland <mark.rutland@arm.com>,
"devicetree@vger.kernel.org" <devicetree@vger.kernel.org>,
"ksummit-2013-discuss@lists.linuxfoundation.org"
<ksummit-2013-discuss@lists.linuxfoundation.org>,
Russell King - ARM Linux <linux@arm.linux.org.uk>,
Ian Campbell <ian.campbell@citrix.com>,
Pawel Moll <Pawel.Moll@arm.com>,
Richard Cochran <richardcochran@gmail.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"rob.herring@calxeda.com" <rob.herring@calxeda.com>,
Tomasz Figa <tomasz.figa@gmail.com>,
Jason Gunthorpe <jgunthorpe@obsidianresearch.com>,
"jonsmirl@gmail.com" <jonsmirl@gmail.com>,
Domenico Andreoli <cavokz@gmail.com>,
mbizon@freebox.fr, Dave P Martin <Dave.Martin@arm.com>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>
Subject: Re: [Ksummit-2013-discuss] DT bindings as ABI [was: Do we have people interested in device tree janitoring / cleanup?]
Date: Wed, 14 Aug 2013 07:46:51 -0700 [thread overview]
Message-ID: <520B985B.3080104@zytor.com> (raw)
In-Reply-To: <520AE238.4030304@roeck-us.net>
On 08/13/2013 06:49 PM, Guenter Roeck wrote:
>
>> That is one aspect (hardware standardization)... but it is more to it
>> than that.
>
> I have to deal with lots of embedded / non-PC x86 based systems. Worst one
> I encountered so far was a board where the VGA memory space was re-used
> for an eeprom. The upcoming next generation hardware I'll have to support
> is so far off-standard that I'll probably have to define a new platform
> type (similar to OLPC or CE4100).
>
> No, it is not all PC. Not anymore. Intel has started to sell into
> the embedded space, where PC compatibility is not a requirement.
>
We try to encourage vendors to do the right thing, where "the right
thing" means, among other things, not to do gratuitously different
things. With increasing amounts of the platform moving into the CPU and
PCH this is of course also becoming more and more rare.
Even on actual PCs we have seen some truly "special" facepalms. There
was the Olivetti machine which used the GPIO for "fast A20" to control
the screen backlight, for example. That one was fun to deal with.
-hpa
next prev parent reply other threads:[~2013-08-14 14:48 UTC|newest]
Thread overview: 142+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-25 16:09 DT bindings as ABI [was: Do we have people interested in device tree janitoring / cleanup?] Olof Johansson
2013-07-25 17:57 ` Mark Rutland
2013-07-25 18:05 ` Stephen Warren
2013-07-25 18:25 ` Olof Johansson
2013-07-25 18:50 ` Stephen Warren
2013-07-25 19:30 ` [Ksummit-2013-discuss] " Mark Brown
2013-07-25 18:29 ` Mark Rutland
2013-07-25 18:48 ` Richard Cochran
2013-07-25 18:53 ` Stephen Warren
2013-07-25 21:41 ` Domenico Andreoli
2013-07-26 4:43 ` Richard Cochran
2013-07-25 21:37 ` Jason Gunthorpe
2013-07-26 4:54 ` Richard Cochran
2013-07-26 13:42 ` Rob Herring
2013-07-26 17:15 ` Jason Gunthorpe
2013-07-27 8:48 ` Richard Cochran
2013-07-27 10:40 ` [Ksummit-2013-discuss] " Mark Brown
2013-07-27 17:37 ` Richard Cochran
2013-07-27 17:57 ` David Lang
2013-07-27 18:17 ` Richard Cochran
2013-07-28 11:27 ` Mark Brown
2013-07-29 17:54 ` Jason Gunthorpe
2013-07-29 18:16 ` Russell King - ARM Linux
2013-07-29 18:40 ` Jason Gunthorpe
2013-07-27 8:53 ` Richard Cochran
2013-07-27 10:20 ` Tomasz Figa
2013-07-27 11:36 ` [Ksummit-2013-discuss] " Mark Brown
2013-07-27 18:07 ` Richard Cochran
2013-07-28 12:10 ` Mark Brown
2013-07-26 8:01 ` Richard Cochran
2013-07-26 9:42 ` [Ksummit-2013-discuss] " David Woodhouse
2013-07-26 13:09 ` Richard Cochran
2013-07-26 13:14 ` Russell King - ARM Linux
2013-07-27 15:28 ` David Gibson
2013-07-26 13:27 ` Jason Cooper
2013-07-26 13:38 ` Russell King - ARM Linux
2013-07-26 13:45 ` Jason Cooper
2013-07-26 13:50 ` David Woodhouse
2013-07-26 13:59 ` Jason Cooper
2013-07-26 13:41 ` David Woodhouse
2013-07-26 13:47 ` Jason Cooper
2013-07-26 14:14 ` jonsmirl
2013-07-26 14:16 ` David Woodhouse
2013-07-26 14:21 ` Russell King - ARM Linux
2013-07-26 14:39 ` jonsmirl
2013-07-26 14:40 ` Mark Brown
2013-07-29 15:32 ` Matt Porter
2013-07-27 15:19 ` David Gibson
2013-07-27 19:37 ` Grant Likely
2013-07-27 9:16 ` Ming Lei
2013-07-26 14:10 ` Mark Brown
2013-07-26 15:49 ` Olof Johansson
2013-07-26 16:36 ` Rob Herring
2013-07-27 4:57 ` Richard Cochran
2013-07-27 5:04 ` Richard Cochran
2013-07-27 9:51 ` Tomasz Figa
2013-07-27 10:24 ` Arend van Spriel
2013-07-27 10:34 ` Arend van Spriel
2013-07-27 11:09 ` Russell King - ARM Linux
2013-07-27 10:36 ` Tomasz Figa
2013-07-27 10:59 ` Arend van Spriel
2013-07-27 19:45 ` Grant Likely
2013-07-27 20:01 ` jonsmirl
2013-07-27 20:03 ` David Woodhouse
2013-07-27 20:25 ` Grant Likely
2013-07-28 3:28 ` Grant Likely
2013-07-28 5:11 ` James Bottomley
2013-07-28 5:13 ` Grant Likely
2013-07-30 1:44 ` David Gibson
2013-07-30 2:15 ` jonsmirl
2013-07-30 3:29 ` David Gibson
2013-07-30 4:35 ` Grant Likely
2013-07-30 8:39 ` Maxime Ripard
2013-07-30 16:30 ` Stephen Warren
2013-07-30 17:27 ` John W. Linville
2013-07-30 16:40 ` Stephen Warren
2013-07-29 9:19 ` Arend van Spriel
2013-07-29 10:16 ` Arend van Spriel
2013-07-27 18:31 ` Richard Cochran
2013-07-27 18:51 ` Tomasz Figa
2013-07-27 19:22 ` jonsmirl
2013-07-28 8:56 ` Richard Cochran
2013-07-28 9:12 ` Tomasz Figa
2013-07-28 13:19 ` Richard Cochran
2013-07-28 13:39 ` Tomasz Figa
2013-07-28 14:09 ` jonsmirl
2013-07-28 15:35 ` Richard Cochran
2013-07-28 15:50 ` jonsmirl
2013-07-28 17:41 ` Mark Brown
2013-07-28 21:46 ` David Gibson
2013-07-28 15:30 ` Richard Cochran
2013-07-29 7:31 ` Maxime Ripard
2013-07-29 18:38 ` Richard Cochran
2013-07-29 18:51 ` Richard Cochran
2013-07-29 18:05 ` Jason Gunthorpe
2013-07-29 18:27 ` Russell King - ARM Linux
2013-07-29 22:20 ` David Gibson
2013-07-29 23:14 ` Jason Gunthorpe
2013-07-29 23:49 ` David Gibson
2013-07-31 10:37 ` Maxime Bizon
2013-07-31 10:59 ` Tomasz Figa
2013-07-31 15:07 ` Richard Cochran
2013-07-31 15:23 ` Tomasz Figa
2013-07-31 19:12 ` Richard Cochran
2013-07-31 19:29 ` Tomasz Figa
2013-07-31 20:00 ` Richard Cochran
2013-07-31 20:14 ` Russell King - ARM Linux
2013-07-31 20:37 ` jonsmirl
2013-07-31 20:48 ` Russell King - ARM Linux
2013-07-31 21:26 ` jonsmirl
2013-08-01 9:57 ` Arend van Spriel
2013-08-01 10:09 ` Mark Brown
2013-08-01 10:18 ` David Woodhouse
2013-08-01 13:34 ` jonsmirl
2013-08-01 13:43 ` jonsmirl
2013-08-01 13:48 ` Rob Herring
2013-08-02 3:50 ` David Gibson
2013-08-13 23:32 ` H. Peter Anvin
2013-08-14 1:49 ` Guenter Roeck
2013-08-14 14:46 ` H. Peter Anvin [this message]
2013-08-02 8:49 ` Tony Lindgren
2013-07-29 15:45 ` Matt Porter
2013-07-31 12:58 ` Ian Campbell
2013-07-25 17:59 ` Stephen Warren
2013-07-25 19:11 ` Rob Herring
2013-07-25 19:31 ` Jason Cooper
2013-07-25 20:04 ` [Ksummit-2013-discuss] " Mark Brown
2013-07-25 20:08 ` Jason Cooper
2013-07-25 20:16 ` Rob Herring
2013-07-25 20:32 ` Jason Cooper
2013-07-25 21:53 ` [Ksummit-2013-discuss] " Ben Hutchings
2013-07-26 0:36 ` Stephen Warren
2013-07-26 12:14 ` Jason Cooper
2013-07-26 0:34 ` Stephen Warren
2013-07-26 22:11 ` Rob Herring
2013-07-25 23:18 ` Russell King - ARM Linux
2013-07-26 0:27 ` jonsmirl
2013-07-26 11:38 ` Jason Cooper
2013-07-26 14:08 ` [Ksummit-2013-discuss] " David Woodhouse
2013-07-26 13:57 ` Mark Brown
2013-07-26 10:55 ` Mark Brown
2013-07-28 4:39 ` Grant Likely
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