Hi Scott,
sorry for the late response.
On Wednesday 16 May 2007, Scott Wood wrote:
Some NAND controllers (such as on the MPC831x chips) have hardware ECC, but can only do it during a transfer (i.e. we can't implement calculate_ecc()). When NAND_ECC_TRANSPARENT is used, then ECC errors on reads are reported through correct_data() (with no arguments other than the mtd device), and on writes through waitfunc()'s return value.
I would like to know the status of this "tranparent" hardware ECC mechanism in the Linux source. I assume that you want to integrate this support there too, right? I couldn't find any reference to this in the current mtd/nand implementations and/or any reference to the MPC831x.
I'm asking, since the U-Boot nand code is based on the Linux mtd codebase, and we should try to keep features common between both source codes as often as possible.
Thanks.
Best regards, Stefan
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