linux-kernel - Re: [PATCH v2 03/16] ARM: dts: provide DMA config to pxamci

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Date:	Mon, 16 Dec 2013 16:03:56 +0400
From:	Sergei Ianovich <ynvich@...il.com>
To:	Lars-Peter Clausen <lars@...afoo.de>
Cc:	Daniel Mack <zonque@...il.com>, Arnd Bergmann <arnd@...db.de>,
	linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	Rob Herring <rob.herring@...xeda.com>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Stephen Warren <swarren@...dotorg.org>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Rob Landley <rob@...dley.net>,
	Russell King <linux@....linux.org.uk>,
	Chris Ball <cjb@...top.org>,
	Viresh Kumar <viresh.kumar@...aro.org>,
	Shawn Guo <shawn.guo@...aro.org>,
	Haojian Zhuang <haojian.zhuang@...il.com>,
	"open list:OPEN FIRMWARE AND..." <devicetree@...r.kernel.org>,
	DOCUMENTATION <linux-doc@...r.kernel.org>,
	linux-mmc@...r.kernel.org
Subject: Re: [PATCH v2 03/16] ARM: dts: provide DMA config to pxamci

On Mon, 2013-12-16 at 12:58 +0100, Lars-Peter Clausen wrote:
> Btw. any driver that parses the dmas property manually should be considered
> broken. This is a classical layering violation. The layout of the dma
> specifier is DMA controller specific and should be completely transparent to
> the device driver.

PXA as a whole is broken in this respect at the moment. The problem is
how to move to a "fixed" state without breaking things which work now.

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