linux-kernel - Re: [PATCH v3 3/4] pinctrl: pinctrl-imx: add imx6q pinctrl driver

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Message-ID: <20120427071654.GB826@shlinux2.ap.freescale.net>
Date:	Fri, 27 Apr 2012 15:16:55 +0800
From:	Dong Aisheng <aisheng.dong@...escale.com>
To:	Sascha Hauer <s.hauer@...gutronix.de>
CC:	Dong Aisheng-B29396 <B29396@...escale.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linus.walleij@...ricsson.com" <linus.walleij@...ricsson.com>,
	"swarren@...dotorg.org" <swarren@...dotorg.org>,
	Guo Shawn-R65073 <r65073@...escale.com>,
	"kernel@...gutronix.de" <kernel@...gutronix.de>,
	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"cjb@...top.org" <cjb@...top.org>,
	Zhao Richard-B20223 <B20223@...escale.com>
Subject: Re: [PATCH v3 3/4] pinctrl: pinctrl-imx: add imx6q pinctrl driver

On Fri, Apr 27, 2012 at 02:45:19PM +0800, Sascha Hauer wrote:
> On Thu, Apr 26, 2012 at 10:40:26PM +0800, Dong Aisheng wrote:
> > From: Dong Aisheng <dong.aisheng@...aro.org>
> > 
> > Signed-off-by: Dong Aisheng <dong.aisheng@...aro.org>
> > ---
> > ChangeLog v1-v2:
> > * add binding doc for pinctrl-imx6q
> > * refactor the probe
> > ---
> >  .../bindings/pinctrl/fsl,imx6q-pinctrl.txt         | 1605 ++++++++++++++
> >  drivers/pinctrl/Kconfig                            |    8 +
> >  drivers/pinctrl/Makefile                           |    1 +
> >  drivers/pinctrl/pinctrl-imx6q.c                    | 2331 ++++++++++++++++++++
> >  4 files changed, 3945 insertions(+), 0 deletions(-)
> >  create mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,imx6q-pinctrl.txt
> >  create mode 100644 drivers/pinctrl/pinctrl-imx6q.c
> > 
> > diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,imx6q-pinctrl.txt b/Documentation/devicetree/bindings/pinctrl/fsl,imx6q-pinctrl.txt
> > new file mode 100644
> > index 0000000..13d474f
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/pinctrl/fsl,imx6q-pinctrl.txt
> > @@ -0,0 +1,1605 @@
> > +* Freescale IMX6Q IOMUX Controller
> > +
> > +Please refer to fsl,imx-pinctrl.txt in this directory for common binding part
> > +and usage.
> > +
> > +Required properties:
> > +- compatible: "fsl,imx6q-iomuxc"
> > +- fsl,pins: two integers array, represents a group of pins mux and config
> > +  setting. The format is fsl,pins = <PIN_FUNC_ID CONFIG>, PIN_FUNC_ID is a
> > +  pin working on a specific function, CONFIG is the pad setting value like
> > +  pull-up for this pin. Please refer to imx6q datasheet for the valid pad
> > +  config settings.
> 
> Wouldn't it make sense to document the CONFIG bits here? Something like
> 
> Pull keeper enabled (pke)	(1 << 7)
> ...
> 
Yes, it makes sense for me to add it.

> Not all bits are available on all pins, refer to the datasheet...
> 

Regards
Dong Aisheng

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