linux-kernel - Re: [PATCH v3 4/4] mmc: sdhci-imx-esdhc: convert to use pinctrl subsystem

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Date:	Fri, 27 Apr 2012 16:54:46 +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 4/4] mmc: sdhci-imx-esdhc: convert to use pinctrl
 subsystem

On Fri, Apr 27, 2012 at 04:31:42PM +0800, Sascha Hauer wrote:
> On Fri, Apr 27, 2012 at 04:29:31PM +0800, Dong Aisheng wrote:
> > mach-imx27ipcam.c          mach-mx31ads.c             mach-mx51_babbage.o        mach-pca100.c
> > mach-imx27lite.c           mach-mx31ads.o             mach-mx51_efikamx.c        mach-pcm037.c
> > 
> > Some of them i'm not familiar and i don't know whether they may use pinctrl
> > so i just patched the affected ones.
> > 
> > One lazy method may be just patch all board files without pinctrl support
> > and it will not cause any error.
> > 
> > What's your suggestion?
> > 
> > > pinctrl. Let's add the provide_dummies call to the SoCs instead which
> > > do not have pinctrl yet.
> > > 
> > You meant add provide_dummies call in imx*_soc_init call?
> > We could do it but there might be a case that some boards are converted
> > to use pinctrl while others still not but they're based on the same soc.
> > For examples, 4 mx53 boards and we may not be able to convert them all at
> > the same time.
> 
> My point is that none of the mx5 boards have pinctrl since there is no
> SoC driver for it.
> For DT based boards pinctrl should be mandatory once the SoC has pinctrl
> support. All non DT boards probably won't get pinctrl anyway.
> 
Ok, so i would be fine for me to change it in imx*_soc_init.
BTW, there're:
imx1_soc_init()
imx25_soc_init()
imx27_soc_init()
imx31_soc_init()
imx35_soc_init()
imx50_soc_init()
imx51_soc_init()
imx53_soc_init()

I'm not sure about mx1, mx27, mx31
Do you think if i could add them all?

Regards
Dong Aisheng

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