linux-kernel - Re: [PATCH] regulator: as3722: Make 0 a valid selector

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Message-ID: <20140603155143.GH31751@sirena.org.uk>
Date:	Tue, 3 Jun 2014 16:51:43 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Thierry Reding <thierry.reding@...il.com>
Cc:	Liam Girdwood <lgirdwood@...il.com>, linux-tegra@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH] regulator: as3722: Make 0 a valid selector

On Tue, Jun 03, 2014 at 05:17:32PM +0200, Thierry Reding wrote:
> From: Thierry Reding <treding@...dia.com>
> 
> As of commit 064d5cd110f9 (regulator: core: Fix the init of DT defined
> fixed regulators) the regulator core tries to query the current voltage
> of a regulator when applying constraints. This exposes a bug in the
> AS3722 regulator driver which fails to read the voltage of disabled
> regulators. The reason is that the hardware is programmed to a selector
> of 0, but none of the voltage tables include 0 as a valid selector. The
> datasheets indicate that 0 is a valid selector when the regulators are
> powered off.

Applied, thanks.

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