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Date:	Thu, 20 Mar 2014 10:20:29 +0100
From:	Lothar Waßmann <LW@...O-electronics.de>
To:	Juergen Beisert <jbe@...gutronix.de>
Cc:	linux-arm-kernel@...ts.infradead.org, y@...o-electronics.de,
	Arnd Bergmann <arnd@...db.de>,
	Artem Bityutskiy <artem.bityutskiy@...ux.intel.com>,
	Brian Norris <computersforpeace@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Fabio Estevam <fabio.estevam@...escale.com>,
	Huang Shijie <b32955@...escale.com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Mark Rutland <mark.rutland@....com>,
	Pawel Moll <pawel.moll@....com>,
	Rob Herring <robh+dt@...nel.org>,
	Rob Landley <rob@...dley.net>,
	Russell King <linux@....linux.org.uk>,
	Sascha Hauer <kernel@...gutronix.de>,
	Shawn Guo <shawn.guo@...escale.com>,
	devicetree@...r.kernel.org, linux-doc@...r.kernel.org,
	linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org
Subject: Re: [PATCH] mtd: gpmi: make blockmark swapping optional

Hi,

Juergen Beisert wrote:
> Hi Lothar,
> 
> On Wednesday 19 March 2014 14:23:26 y@...o-electronics.de wrote:
> > With a flash-based BBT there is no reason to move the Factory Bad
> > Block Marker from the data area buffer (to where it is mapped by the
> > GPMI NAND controller) to the OOB buffer. Thus, make this feature
> > configurable via DT. This is required for the Ka-Ro electronics
> > platforms.
> > [...]
> 
> How do you create the BBT the very first time with valuable data when the NAND 
> already contains factory bad blocks?
> 
With the flashtool that does the initial flash programming.


Lothar Waßmann
-- 
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