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From: Mark Brown <broonie@opensource.wolfsonmicro.com>
To: Jarkko Nikula <jhnikula@gmail.com>
Cc: linux-kernel@vger.kernel.org, Liam Girdwood <lrg@slimlogic.co.uk>
Subject: Re: [PATCH] regulator: Fix machine constraints apply for min_uV != max_uV
Date: Fri, 3 Sep 2010 15:54:20 +0100	[thread overview]
Message-ID: <20100903145420.GB7614@rakim.wolfsonmicro.main> (raw)
In-Reply-To: <1283521429-32499-1-git-send-email-jhnikula@gmail.com>

On Fri, Sep 03, 2010 at 04:43:49PM +0300, Jarkko Nikula wrote:
> Constraints are not applied until both min_uV and max_uV are the same. This
> looks like a typo in the test.
> 
> Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>

This is deliberate behaviour, apply_uV can only be used with a fixed
voltage at startup in order to avoid issues with handover from the
bootloader if we suddenly drop the supply voltage on a device which has
not yet been claimed by a driver.  The expectation is that if the
voltage can vary then something that understands the hardware state
needs to be involved in maintaining the voltage.

  reply	other threads:[~2010-09-03 14:54 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-03 13:43 Jarkko Nikula
2010-09-03 14:54 ` Mark Brown [this message]
2010-09-03 15:32   ` Jarkko Nikula

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