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Date:	Mon, 10 Mar 2014 15:18:07 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Josh Cartwright <joshc@...eaurora.org>
Cc:	Rob Herring <robherring2@...il.com>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-arm-msm <linux-arm-msm@...r.kernel.org>,
	rtc-linux@...glegroups.com, Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Rob Landley <rob@...dley.net>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Lee Jones <lee.jones@...aro.org>
Subject: Re: [PATCH v2 6/6] documentation: bindings: document PMIC8921/8058
 RTC

On Mon, 10 Mar 2014 17:11:32 -0500 Josh Cartwright <joshc@...eaurora.org> wrote:

> On Mon, Mar 10, 2014 at 04:22:51PM -0500, Rob Herring wrote:
> > On Mon, Mar 10, 2014 at 1:44 PM, Josh Cartwright <joshc@...eaurora.org> wrote:
> > > This RTC is found on the Qualcomm 8921 and 8058 PMICs.
> > >
> > > Signed-off-by: Josh Cartwright <joshc@...eaurora.org>
> > > ---
> > >  .../devicetree/bindings/rtc/qcom,pm8xxx-rtc.txt     | 21 +++++++++++++++++++++
> > >  1 file changed, 21 insertions(+)
> > >  create mode 100644 Documentation/devicetree/bindings/rtc/qcom,pm8xxx-rtc.txt
> > >
> > > diff --git a/Documentation/devicetree/bindings/rtc/qcom,pm8xxx-rtc.txt b/Documentation/devicetree/bindings/rtc/qcom,pm8xxx-rtc.txt
> > > new file mode 100644
> > > index 0000000..3eaa582
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/rtc/qcom,pm8xxx-rtc.txt
> > > @@ -0,0 +1,21 @@
> > > +* Real-Time Clock for Qualcomm 8058/8921 PMICs
> > > +
> > > +Required properties:
> > > +- compatible: should be one of the following.
> > > +    * "qcom,pm8058-rtc"
> > > +    * "qcom,pm8921-rtc"
> > > +- reg: base address of the register region
> > 
> > Wait a second. This is all part of an MFD device. I think this whole
> > binding does not make sense on it's own. The DT should describe the
> > PMIC, not necessarily some sub-component of it. Perhaps there are sub
> > nodes of the PMIC node, but that would be all part of the PMIC
> > binding. Having sub drivers for an MFD is really a Linux problem that
> > doesn't belong in DT.
> 
> Okay, this makes sense, I can move this documentation to
> Documentation/bindings/mfd/qcom,pm8xxx.txt where the PMIC binding
> currently is.
> 
> Note that this does introduce a dependency on Lee Jones' mfd tree, where
> DT support for the parent pm8921 driver is pending for 3.15.
> 
> Andrew, how would you prefer I proceed?  Would you like me to respin
> this patch?  The whole series?  An incremental patch?

A new version of [6/6] sounds appropriate.
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