Messages in this thread | | | Date | Thu, 11 Jun 2015 23:41:00 +0900 | From | KOBAYASHI Yoshitake <> | Subject | Re: [PATCH] mtd: nand: support for Toshiba BENAND (Built-in ECC NAND) |
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On 2015/06/10 16:50, Richard Weinberger wrote: > On Wed, Jun 10, 2015 at 9:08 AM, KOBAYASHI Yoshitake > <yoshitake.kobayashi@toshiba.co.jp> wrote: >> This patch enables support for Toshiba BENAND. >> Toshiba BENAND is a SLC NAND solution that automatically generates ECC >> inside NAND chip. Newer generation SLC NAND devices of today need multi-bit >> hardware ECC by NAND controller in SoC. BENAND solution is ECC free, >> has high performance and backward compatibility in NAND chip trend. > > Do you have performance numbers? > How fast is it compared to a decent HW ECC engine?
Comparing with 24nm SLC NAND, BENAND is few percent faster in write and more than 5 percent faster in read. But the result depends on usecase and compared device. I will delete the last sentence.
> Did you see my On-Die ECC series and Brian's comments on it? > https://lkml.org/lkml/2015/3/25/310 > I suspect some of his comments will apply to you as well.
Thanks for the suggestion. I would like to post the current driver first to make it open, then consider how to apply his comments. Because I made a big mistake.
-- <snip> -- >> +obj-$(CONFIG_MTD_NAND_BENAND) += nand_benand.o > > nand_benand.c is not part of this patch. > Forgot a git add? :-)
Oh!.. I will repost it.
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