[U-Boot] mtd: nand: omap_gpmc: Fix 'bit-flip' errors

[Tom Rini]

On Tue, Sep 02, 2014 at 05:00:30PM +0200, Rostislav Lisovy wrote:

> OMAP GPMC driver used with some NAND Flash devices (e.g. Spansion
> S34ML08G1) causes that U-boot shows hundreds of 'nand: bit-flip
> corrected' error messages. Possible cause was discussed in the
> mailinglist thread:
> http://lists.denx.de/pipermail/u-boot/2014-April/177508.html
> 
> Quote (Author: Pekon Gupta <pekon at ti.com>): "The issue is mainly
> due to a NAND protocol violation in the omap driver since the
> Random Data Output command (05h-E0h) expects to see only the
> column address that should be addressed within the already loaded
> read page into the read buffer. Only 2 address cycles with ALE
> active should be provided between the 05h and E0h commands. The
> Page read command expects the full address footprint (2bytes for
> column address + 3bytes for row address), but once the page is
> loaded into the read buffer, Random Data Output should be used
> with only 2bytes for column address."
> 
> This patch combines the solution proposed in the mailinglist and
> the patch provided by the Spansion company (GPLv2 code, source:
> http://www.spansion.com/Support/Software/u-boot-psp-04.04.00.01-NAND.zip)
> 
> Signed-off-by: Rostislav Lisovy <lisovy at merica.cz>

Applied to u-boot/master, thanks!

-- 
Tom
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