linux-kernel - Re: PFUZE100 regulator not going off when PWRON is 0

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Message-ID: <20140903125248.GK29327@sirena.org.uk>
Date:	Wed, 3 Sep 2014 13:52:48 +0100
From:	Mark Brown <broonie@...nel.org>
To:	Jean-Michel Hautbois <jean-michel.hautbois@...alys.com>
Cc:	linux-kernel <linux-kernel@...r.kernel.org>, lgirdwood@...il.com,
	devicetree@...r.kernel.org, robh+dt@...nel.org,
	grant.likely@...aro.org, Robin Gong <b38343@...escale.com>
Subject: Re: PFUZE100 regulator not going off when PWRON is 0

On Wed, Sep 03, 2014 at 11:44:22AM +0200, Jean-Michel Hautbois wrote:

> I have a custom i.MX6 based board, but PMIC part is exactly the same
> as the Freescale SabreSD board.
> I have a reset button, which makes the PWRON signal on PFUZE100 go from 1 to 0.
> I thought this would reset the chip, and thus all voltages would go to
> 0, but this is not the case. It seems that SWxOMODE registers are
> involved in this process, accorgind to the datasheet, but I don't
> think this is implemented right now.
> 
> I also removed regulator-always-on for my SW2 pin in order to get it
> off, but this has no effect.

You should really contact someone who worked on the driver or Freescale
about this - I don't think anyone on the CC list knows anything about
the part.  In general if you're asking about a specific driver this is a
good approach.  I've CCed Robin Gong who was the original author.

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