Hi Andreas,
On 9/4/2013 8:30 PM, Andreas Bießmann wrote:
Yes, we need libbch.
If we really want to enable software BCH support. It also need add following two options in board configuration file. ---8>--- #define CONFIG_NAND_ECC_BCH #define CONFIG_BCH ---<8---
So, this patch give us option to enable software BCH.
got it. So the NAND_ECC_BCH is the adoption for the SW BCH correction in mtd layer. I understand that this would be helpful for at91 SoC without PMECC HW. But there is no user currently, so I hesitate to apply this.
Frankly, there is no EK boards from Atmel use software BCH now, however, a lot of customers use NAND with 224 bytes OOB, can not use software ECC, they need use software BCH. So, I think it is better to apply this patch. If it will break the rule of u-boot, then I think we can wait real user in u-boot need this and then apply this patch.
Best regards
Andreas Bießmann
Best Regards, Bo Shen