linux-kernel - Re: [PATCH 2/7] mfd: MT6397: Add regmap for MT8135 and MT6397 SoC

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Date:	Tue, 18 Nov 2014 14:46:18 +0100
From:	Sascha Hauer <s.hauer@...gutronix.de>
To:	Lee Jones <lee.jones@...aro.org>
Cc:	Flora Fu <flora.fu@...iatek.com>, Rob Herring <robh+dt@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Grant Likely <grant.likely@...aro.org>,
	"Joe.C" <yingjoe.chen@...iatek.com>,
	Catalin Marinas <catalin.marinas@....com>,
	Vladimir Murzin <vladimir.murzin@....com>,
	Ashwin Chaugule <ashwin.chaugule@...aro.org>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, srv_heupstream@...iatek.com,
	Sascha Hauer <kernel@...gutronix.de>,
	Eddie Huang <eddie.huang@...iatek.com>,
	Dongdong Cheng <dongdong.cheng@...iatek.com>
Subject: Re: [PATCH 2/7] mfd: MT6397: Add regmap for MT8135 and MT6397 SoC

On Tue, Nov 18, 2014 at 11:46:45AM +0000, Lee Jones wrote:
> On Mon, 17 Nov 2014, Flora Fu wrote:
> 
> > Add PMIC wrapper of MT8135 to access MFD MT6397.
> > This is regmap of MT6397 MFD.
> > 
> > Signed-off-by: Flora Fu <flora.fu@...iatek.com>
> > ---
> >  drivers/mfd/Kconfig            |   8 +
> >  drivers/mfd/Makefile           |   1 +
> >  drivers/mfd/mt8135-pmic-wrap.c | 847 +++++++++++++++++++++++++++++++++++++++++
> 
> All of the PMIC functionality needs removing from MFD and placed
> somewhere else.  I suggest either drivers/power or drivers/regulator.

This is no PMIC functionality. The MT8135 has a unit which is is used to
access the PMIC (which is not only a PMIC, but also Touchscreen
interface and other stuff). This unit is called pmic-wrapper in the
docs. See the introductory mail for a nice picture.

Sascha

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