linux-kernel - RE: [PATCH v3 2/3] mtd: devices: elm: Add support for ELM error correction

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Date:	Tue, 11 Dec 2012 12:55:21 +0000
From:	"Philip, Avinash" <avinashphilip@...com>
To:	Grant Likely <grant.likely@...retlab.ca>,
	"dwmw2@...radead.org" <dwmw2@...radead.org>,
	"artem.bityutskiy@...ux.intel.com" <artem.bityutskiy@...ux.intel.com>,
	"Mohammed, Afzal" <afzal@...com>,
	"tony@...mide.com" <tony@...mide.com>,
	"broonie@...nsource.wolfsonmicro.com" 
	<broonie@...nsource.wolfsonmicro.com>,
	"rmk+kernel@....linux.org.uk" <rmk+kernel@....linux.org.uk>,
	"gregkh@...uxfoundation.org" <gregkh@...uxfoundation.org>
CC:	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	"linux-doc@...r.kernel.org" <linux-doc@...r.kernel.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"Nori, Sekhar" <nsekhar@...com>,
	"Hebbar, Gururaja" <gururaja.hebbar@...com>,
	"ivan.djelic@...rot.com" <ivan.djelic@...rot.com>,
	Rob Herring <rob.herring@...xeda.com>,
	Rob Landley <rob@...dley.net>
Subject: RE: [PATCH v3 2/3] mtd: devices: elm: Add support for ELM error
 correction

On Tue, Dec 11, 2012 at 14:33:56, Grant Likely wrote:
> On Thu, 29 Nov 2012 17:16:33 +0530, "Philip, Avinash" <avinashphilip@...com> wrote:
> > The ELM hardware module can be used to speedup BCH 4/8/16 ECC scheme
> > error correction.
> > For now only 4 & 8 bit support is added
> > 
> > Signed-off-by: Philip, Avinash <avinashphilip@...com>
> > Cc: Grant Likely <grant.likely@...retlab.ca>
> > Cc: Rob Herring <rob.herring@...xeda.com>
> > Cc: Rob Landley <rob@...dley.net>
> > ---
> > Changes since v2:
> > 	- Remove __devinit & __devexit annotations
> > 
> > Changes since v1:
> > 	- Change build attribute to CONFIG_MTD_NAND_OMAP_BCH
> > 	- Reduced indentation using by passing elm_info , offset
> > 	  to elm_read & elm_write
> > 	- Removed syndrome manipulation functions.
> > 
> > :000000 100644 0000000... b88ee83... A	Documentation/devicetree/bindings/mtd/elm.txt
> > :100644 100644 395733a... 369a194... M	drivers/mtd/devices/Makefile
> > :000000 100644 0000000... d2667f3... A	drivers/mtd/devices/elm.c
> > :000000 100644 0000000... d4fce31... A	include/linux/platform_data/elm.h
> >  Documentation/devicetree/bindings/mtd/elm.txt |   17 +
> >  drivers/mtd/devices/Makefile                  |    4 +-
> >  drivers/mtd/devices/elm.c                     |  418 +++++++++++++++++++++++++
> >  include/linux/platform_data/elm.h             |   54 ++++
> >  4 files changed, 493 insertions(+), 1 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/mtd/elm.txt b/Documentation/devicetree/bindings/mtd/elm.txt
> > new file mode 100644
> > index 0000000..b88ee83
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/mtd/elm.txt
> > @@ -0,0 +1,17 @@
> > +Error location module
> > +
> > +Required properties:
> > +- compatible: Must be "ti,elm"
> 
> Compatible string is too generic. Need to specify a specific SoC here.
> ie: "ti,omap3430-elm"

I will change to "ti,am33xx-elm" in next version.

Thanks
Avinash


> 
> Otherwise the binding looks fine. I haven't reviewed the code though.
> 
> g.
> 
> 

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