From: scottwood@freescale.com (Scott Wood)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH 0/3] ARM: use C pre-processor with dtc
Date: Tue, 25 Sep 2012 14:59:11 -0500 [thread overview]
Message-ID: <1348603151.5565.20@snotra> (raw)
In-Reply-To: <20120925195127.GA19350@sirena.org.uk> (from broonie@opensource.wolfsonmicro.com on Tue Sep 25 14:51:27 2012)
On 09/25/2012 02:51:27 PM, Mark Brown wrote:
> On Tue, Sep 25, 2012 at 02:35:46PM -0500, Scott Wood wrote:
>
> > Do you have an example of where you'd actually benefit from this?
> > I'd think most things could either be done reasonably well with
> > what's built into DTC (see what we've done in
> > arch/powerpc/boot/dts/fsl), or would need math expression support in
> > DTC (or has that been added?).
>
> The constant example is the magic numbers we need to embed into DTs
> for
> things like interrupt modes, making them human readable would be a
> real
> win.
Wasn't there a patch for named constant support in dtc a while back?
Hmm:
https://lists.ozlabs.org/pipermail/devicetree-discuss/2012-January/011184.html
I'm not sure that going down the CPP path is better than the
possibility of named constants having a different syntax from
macros/functions. It would be one thing if someone were actively
working on the latter, but this paralysis seems to be a case of the
perfect being the enemy of the good.
-Scott
WARNING: multiple messages have this Message-ID (diff)
From: Scott Wood <scottwood-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
To: Mark Brown
<broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org>
Cc: Stephen Warren <swarren-DDmLM1+adcrQT0dZR+AlfA@public.gmane.org>,
devicetree-discuss-uLR06cmDAlY/bJ5BZ2RsiQ@public.gmane.org,
Rob Herring <rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org>,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org
Subject: Re: [RFC PATCH 0/3] ARM: use C pre-processor with dtc
Date: Tue, 25 Sep 2012 14:59:11 -0500 [thread overview]
Message-ID: <1348603151.5565.20@snotra> (raw)
In-Reply-To: <20120925195127.GA19350-GFdadSzt00ze9xe1eoZjHA@public.gmane.org> (from broonie-yzvPICuk2AATkU/dhu1WVueM+bqZidxxQQ4Iyu8u01E@public.gmane.org on Tue Sep 25 14:51:27 2012)
On 09/25/2012 02:51:27 PM, Mark Brown wrote:
> On Tue, Sep 25, 2012 at 02:35:46PM -0500, Scott Wood wrote:
>
> > Do you have an example of where you'd actually benefit from this?
> > I'd think most things could either be done reasonably well with
> > what's built into DTC (see what we've done in
> > arch/powerpc/boot/dts/fsl), or would need math expression support in
> > DTC (or has that been added?).
>
> The constant example is the magic numbers we need to embed into DTs
> for
> things like interrupt modes, making them human readable would be a
> real
> win.
Wasn't there a patch for named constant support in dtc a while back?
Hmm:
https://lists.ozlabs.org/pipermail/devicetree-discuss/2012-January/011184.html
I'm not sure that going down the CPP path is better than the
possibility of named constants having a different syntax from
macros/functions. It would be one thing if someone were actively
working on the latter, but this paralysis seems to be a case of the
perfect being the enemy of the good.
-Scott
next prev parent reply other threads:[~2012-09-25 19:59 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-25 19:06 [RFC PATCH 0/3] ARM: use C pre-processor with dtc Stephen Warren
2012-09-25 19:06 ` Stephen Warren
2012-09-25 19:06 ` [RFC PATCH 1/3] kbuild: introduce cmd_dtc_cpp Stephen Warren
2012-09-25 19:06 ` Stephen Warren
2012-09-27 5:44 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-27 5:44 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-27 15:39 ` Stephen Warren
2012-09-27 15:39 ` Stephen Warren
2012-09-27 17:40 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-27 17:40 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-25 19:06 ` [RFC PATCH 2/3] ARM: use cmd_dtc_cpp for compilation of *.dts-cpp to *.dtb Stephen Warren
2012-09-25 19:06 ` Stephen Warren
2012-09-27 5:47 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-27 5:47 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-27 15:40 ` Stephen Warren
2012-09-27 15:40 ` Stephen Warren
2012-09-25 19:06 ` [RFC PATCH 3/3] ARM: tegra: compile all DT files with cpp Stephen Warren
2012-09-25 19:06 ` Stephen Warren
2012-09-25 19:35 ` [RFC PATCH 0/3] ARM: use C pre-processor with dtc Scott Wood
2012-09-25 19:35 ` Scott Wood
2012-09-25 19:51 ` Mark Brown
2012-09-25 19:51 ` Mark Brown
2012-09-25 19:59 ` Scott Wood [this message]
2012-09-25 19:59 ` Scott Wood
2012-09-25 20:05 ` Stephen Warren
2012-09-25 20:05 ` Stephen Warren
2012-09-25 20:05 ` Mark Brown
2012-09-25 20:05 ` Mark Brown
2012-09-25 19:51 ` Stephen Warren
2012-09-25 19:51 ` Stephen Warren
2012-09-25 23:46 ` Tony Lindgren
2012-09-25 23:46 ` Tony Lindgren
2012-09-27 5:40 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-27 5:40 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-27 15:38 ` Stephen Warren
2012-09-27 15:38 ` Stephen Warren
2012-09-27 17:27 ` Jean-Christophe PLAGNIOL-VILLARD
2012-09-27 17:27 ` Jean-Christophe PLAGNIOL-VILLARD
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