linux-kernel - Re: [PATCH 1/7] mmc: dw_mmc: lookup for optional biu and ciu clocks

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Message-ID: <CAJuYYwSJ8FBQiykcyym9Gg1jVoW+rGZmjtHfy4zgcDEX6edOEA@mail.gmail.com>
Date:	Thu, 10 May 2012 14:42:30 +0530
From:	Thomas Abraham <thomas.abraham@...aro.org>
To:	Russell King - ARM Linux <linux@....linux.org.uk>
Cc:	linux-mmc@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org,
	linux-samsung-soc@...r.kernel.org, patches@...aro.org,
	linux-kernel@...r.kernel.org, rob.herring@...xeda.com,
	grant.likely@...retlab.ca, kgene.kim@...sung.com, cjb@...top.org,
	linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 1/7] mmc: dw_mmc: lookup for optional biu and ciu clocks

On 2 May 2012 15:23, Russell King - ARM Linux <linux@....linux.org.uk> wrote:
> On Tue, May 01, 2012 at 10:07:40PM -0700, Thomas Abraham wrote:
>> Some platforms allow for clock gating and control of bus interface unit clock
>> and card interface unit clock. Add support for clock lookup of optional biu
>> and ciu clocks for clock gating and clock speed determination.
>
> As we're moving progressively towards the common clk API, which requires
> the new clk_prepare/clk_unprepare calls, new code should be using the
> dated API.  Please update this to do so (eg, by using clk_prepare_enable()
> instead of clk_enable() for the simple solution.)  Better solutions
> involve decoupling the two and only using clk_enable()/clk_disable() where
> you really need the clock to be on.

Thanks for your suggestion. I will modify this to use the
clk_prepare_enable and clk_disable_unprepare calls for now.

Thanks,
Thomas.
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