linux-kernel - Re: [PATCH v3] ARM: kirkwood: extend the kirkwood i2s driver for DT usage

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Date:	Tue, 23 Jul 2013 11:03:38 +0200
From:	Lars-Peter Clausen <lars@...afoo.de>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
CC:	Jean-Francois Moine <moinejf@...e.fr>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.de>,
	Rob Herring <rob.herring@...xeda.com>,
	alsa-devel@...a-project.org, linux-kernel@...r.kernel.org,
	devicetree-discuss@...r.kernel.org
Subject: Re: [PATCH v3] ARM: kirkwood: extend the kirkwood i2s driver for
 DT usage

On 07/23/2013 10:53 AM, Russell King - ARM Linux wrote:
> On Tue, Jul 23, 2013 at 10:46:15AM +0200, Jean-Francois Moine wrote:
>> The kirkwood i2s driver is used without DT in the Kirkwood machine.
>> This patch adds a DT compatible definition for use in other Marvell
>> machines as the Armada 88AP510 (Dove).
> 
> Yet again, this illustrates why converting to DT causes backwards
> steps in drivers: the conversion of devm_clk_get() to of_clk_get()
> necessitates a clk_put().

That's just a very poor usage of the API in this patch. devm_clk_get() works
fine on DT and non-DT platforms. The driver shouldn't need any changes in
that regard.

- Lars

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