linux-kernel - Re: [PATCH v2 04/11] mfd:stixxxx-syscfg: Add ST System Configuration support.

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Message-ID: <51B6D49F.3030203@st.com>
Date:	Tue, 11 Jun 2013 08:41:19 +0100
From:	Srinivas KANDAGATLA <srinivas.kandagatla@...com>
To:	Arnd Bergmann <arnd@...db.de>
Cc:	linux-arm-kernel@...ts.infradead.org,
	Linus Walleij <linus.walleij@...aro.org>,
	"David S. Miller" <davem@...emloft.net>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	Stephen Gallimore <stephen.gallimore@...com>,
	Rob Herring <rob.herring@...xeda.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Stuart Menefy <stuart.menefy@...com>,
	Mark Brown <broonie@...nel.org>,
	John Stultz <john.stultz@...aro.org>,
	"linux-serial@...r.kernel.org" <linux-serial@...r.kernel.org>,
	Grant Likely <grant.likely@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Mauro Carvalho Chehab <mchehab@...hat.com>
Subject: Re: [PATCH v2 04/11] mfd:stixxxx-syscfg: Add ST System Configuration
 support.

On 10/06/13 15:02, Arnd Bergmann wrote:
> There are multiple ways of doing that, e.g. you could export a function
> from syscon.c that you call to register the device node and then import
> the regmap from syscon into your high-level driver again.
> 

Hi Arnd/Linus,

Thankyou for your comments,
I did try using the full sysconf names in compatible and make use of
syscon driver, with this change the nodes look much neater.

The nodes changes to:

syscfg_sbc:syscfg@...00000{
    compatible      = "st,stih416-sbc-syscfg", "syscon";
    reg             = <0xfe600000 0x1000>;
};

From:
syscfg_sbc:syscfg@...00000{
         compatible      = "st,stih416-syscfg";
         reg             = <0xfe600000 0x1000>;
         syscfg-range    = <0 999>;
         syscfg-name     = "SYSCFG_SBC";
};


Also I got rid of the drivers/mfd/stixxxx-syscfg.c driver all together
for this basic support patch series, I will add this once there are new
high level functions.
Additional compatible string will allow code to get to regmap via syscon
apis.

I will get rid of this driver in next version for this series.

Thanks,
srini

> 	Arnd
> 
> 

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