state of support for "external ECC hardware"

Christopher Harvey charvey at matrox.com
Mon Oct 29 16:42:27 EDT 2012


I know of at least one Micron NAND chip that has the ability to handle
ECC completely on the NAND chip itself. All the host has to do is send
data and the OOB section is updated automatically. The automatic ECC
hardware can be enabled and disabled with the "Set Feature" command,
(0xEF) and bit flips are reported via get status after page reads. I
don't see support for this in 2.6.37, and a quick check in the logs
doesn't show anything new for these chips in the latest version of the
kernel. Any idea floating around on this list? Are these chips going
to be the future for NAND and does Linux care about them?

thanks,
Chris



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