On 12/11/2013 11:18 PM, Gupta, Pekon wrote:
Hi Nikita,
From: Nikita Kiryanov [mailto:nik...@compulab.co.il]
Commit "mtd: nand: omap: enable BCH ECC scheme using ELM for generic platform"
(d016dc42cedbf6102e100fa9ecb58462edfb14f8) changed the way software ECC is
configured, both during boot, and during ecc switch, in a way that is not
backwards compatible with older systems (for example, X-Loader on CM-T35 relies
on the old behavior).
The culprit is the line which assigns ecc.size for software ECC.
Older version of omap_gpmc.c always assigned ecc.size = 0 when configuring for
software ecc, relying on nand_scan_tail() to select a default for ecc.size
(256), while the new version of omap_gpmc.c assigns ecc.size = pagesize, which
is likely to not be 256.
Then its just one-line change.. Remove "ecc.size = pagesize".
Why do you need to add a newer config for that ?
This ecc-scheme (HAM1_SW) is anyways only kept for backward compatibility
with legacy devices. (As also mentioned in doc/README.nand)
-----------------------------
CONFIG_NAND_OMAP_ECCSCHEME
On OMAP platforms, this CONFIG specifies NAND ECC scheme.
It can take following values:
OMAP_ECC_HAM1_CODE_SW
1-bit Hamming code using software lib.
(for legacy devices only)
-----------------------------
OK if that's the case then that makes things easier. New patch coming
up.
--
Regards,
Nikita.
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de
http://lists.denx.de/mailman/listinfo/u-boot
