CC-ing Pekon Gupta which add those changes in commit: 6e562b1106ea6afc78752f50925e87e9dd14f8b4
On Tue, Apr 15, 2014 at 12:47 PM, Belisko Marek marek.belisko@gmail.com wrote:
Hi,
we're running 2014.04-rc3 on custom am335x board (same configuration as BBB). When spl is loading u-boot from nand flash we can see a lot of messages in console: nand: bit-flip corrected @oob=0
It is always the same position (seems to be first byte in oob). Anybody experienced same problem? I've tested on 2 different flashes and result is same.
I was able to track down that read ecc from gpmc return always first byte as 0xFF (in omap_calculate_ecc()) and thus function omap_correct_data_bch() always trying to repair bit-flips in first oob byte. Can this be caused by flash? Any pointers?
In config we're using: #define CONFIG_NAND_OMAP_ECCSCHEME OMAP_ECC_BCH8_CODE_HW #define CONFIG_NAND_OMAP_ELM
BR,
marek
-- as simple and primitive as possible
Marek Belisko - OPEN-NANDRA Freelance Developer
Ruska Nova Ves 219 | Presov, 08005 Slovak Republic Tel: +421 915 052 184 skype: marekwhite twitter: #opennandra web: http://open-nandra.com
Thanks,
marek