[U-Boot] [PATCH RFC] NAND: Improve read performance from Large Page NAND devices

Wolfgang Denk
2009-12-09T11:02:22Z

Dear Nick Thompson,

In message <4B1E71D9.6080802@ge.com> you wrote:
> Improve read performance from Large Page NAND devices.
>
> This patch produces a ~31% improvement in oob_first read speed (on a
> 300MHz ARM9). The time for a mid-buffer 2k page read is now 293us,
> 6.99MB/s (was 385us, 5.31MB/s). oob_first is probably the best case
> improvement.
>
> Signed-off-by: Nick Thompson <nick.thompson@ge.com>

Also tested on Canyonlands (460EX); here I actually see a slightj
improvement (5.5% faster, i. e. time to read 126 MB from NAND goes
down from 28.8 to 27.2 seconds (4.4 -> 4.6 MiB/s).

Tested-by: Wolfgang Denk <wd@denx.de>

Best regards,

Wolfgang Denk

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