linux-kernel - Re: [PATCH v4 1/3] Runtime Interpreted Power Sequences

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Message-ID: <20120821165738.GY7995@opensource.wolfsonmicro.com>
Date:	Tue, 21 Aug 2012 17:57:38 +0100
From:	Mark Brown <broonie@...nsource.wolfsonmicro.com>
To:	Tomi Valkeinen <tomi.valkeinen@...com>
Cc:	Thierry Reding <thierry.reding@...onic-design.de>,
	Alex Courbot <acourbot@...dia.com>,
	Stephen Warren <swarren@...dia.com>,
	Simon Glass <sjg@...omium.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Herring <rob.herring@...xeda.com>,
	Anton Vorontsov <cbou@...l.ru>,
	David Woodhouse <dwmw2@...radead.org>,
	Arnd Bergmann <arnd@...db.de>,
	Leela Krishna Amudala <leelakrishna.a@...il.com>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-fbdev@...r.kernel.org" <linux-fbdev@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>
Subject: Re: [PATCH v4 1/3] Runtime Interpreted Power Sequences

On Tue, Aug 21, 2012 at 12:54:20PM +0300, Tomi Valkeinen wrote:

> However, if we already have a generic driver for that type of panel,
> (which we would need anyway for the DT based approach), the developer
> only needs to add the name of the panel and the data for the power
> sequence to the panel driver's database, which is about the same amount
> of work as with DT.

> So it's really just a question of where to put the data in question, DT
> or driver. Both contain the same data, and the data structure may also
> be the same. In DT's case it just needs to be parsed first, whereas in
> database case you'll enter the data in structs.

I think the device tree idiomatic way of doing this is to have a bunch
of .dtsi files for the panels which then get included by reference in
the board files.  This isn't helpful to people working on non-DT
architectures though.

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