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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

  parent reply	other threads:[~2012-09-25 19:59 UTC|newest]

Thread overview: 19+ 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
     [not found] ` <1348599998-2729-1-git-send-email-swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-09-25 19:06   ` [RFC PATCH 1/3] kbuild: introduce cmd_dtc_cpp Stephen Warren
2012-09-27  5:44     ` Jean-Christophe PLAGNIOL-VILLARD
     [not found]       ` <20120927054438.GM17667-RQcB7r2h9QmfDR2tN2SG5Ni2O/JbrIOy@public.gmane.org>
2012-09-27 15:39         ` Stephen Warren
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
     [not found]     ` <1348599998-2729-3-git-send-email-swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-09-27  5:47       ` Jean-Christophe PLAGNIOL-VILLARD
     [not found]         ` <20120927054700.GN17667-RQcB7r2h9QmfDR2tN2SG5Ni2O/JbrIOy@public.gmane.org>
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 19:35   ` [RFC PATCH 0/3] ARM: use C pre-processor with dtc Scott Wood
2012-09-25 19:51     ` Mark Brown
     [not found]       ` <20120925195127.GA19350-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2012-09-25 19:59         ` Scott Wood [this message]
2012-09-25 20:05           ` Mark Brown
2012-09-25 20:05           ` Stephen Warren
2012-09-25 19:51     ` Stephen Warren
     [not found]       ` <50620B5B.5020904-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-09-25 23:46         ` Tony Lindgren
2012-09-27  5:40   ` Jean-Christophe PLAGNIOL-VILLARD
     [not found]     ` <20120927054038.GL17667-RQcB7r2h9QmfDR2tN2SG5Ni2O/JbrIOy@public.gmane.org>
2012-09-27 15:38       ` Stephen Warren
     [not found]         ` <506472E4.5060107-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>
2012-09-27 17:27           ` Jean-Christophe PLAGNIOL-VILLARD

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