linux-kernel - Re: [PATCH] regulator: max8997: skip gpio dvs setup if not used

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Message-ID: <CAJ0PZbT-RD_jMpAesm9aegjpfzsimN-hAUX3ck7vJBOHH7EV5A@mail.gmail.com>
Date:	Wed, 21 Nov 2012 23:31:16 +0900
From:	MyungJoo Ham <myungjoo.ham@...sung.com>
To:	Thomas Abraham <thomas.abraham@...aro.org>
Cc:	linux-kernel@...r.kernel.org, broonie@...nsource.wolfsonmicro.com,
	linux-samsung-soc@...r.kernel.org
Subject: Re: [PATCH] regulator: max8997: skip gpio dvs setup if not used

On Wed, Nov 21, 2012 at 11:23 PM, Thomas Abraham
<thomas.abraham@...aro.org> wrote:
> If gpio based voltage selection for buck 1/2/5 are not used, then the execution
> of gpio dvs setup code during probe can be skipped completly.

Even if GPIO-DVS feature is turned off, you need to setup BUCKxDVS1 anyway.
Otherwise, you may get "unspecified" behavior from the BUCK1/2/5,
which may incur unstable system.


Cheers,
MyungJoo


-- 
MyungJoo Ham, Ph.D.
Mobile Software Platform Lab, DMC Business, Samsung Electronics
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