* OneNAND Cache Read Operation
@ 2008-08-20 7:36 Adrian Hunter
2008-08-20 22:52 ` Kyungmin Park
0 siblings, 1 reply; 2+ messages in thread
From: Adrian Hunter @ 2008-08-20 7:36 UTC (permalink / raw)
To: Kyungmin Park; +Cc: linux-mtd@lists.infradead.org
Hi
I finally got around to trying OneNAND Cache Read Operation.
I got the same results as you. Just a 1 - 2 % increase in speed
on OMAP3. It seems that the OMAP memory controller (GPMC) is not
capable of transferring the data from bufferRAM fast enough to
achieve the maximum OneNAND read speed.
Regards
Adrian
^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: OneNAND Cache Read Operation
2008-08-20 7:36 OneNAND Cache Read Operation Adrian Hunter
@ 2008-08-20 22:52 ` Kyungmin Park
0 siblings, 0 replies; 2+ messages in thread
From: Kyungmin Park @ 2008-08-20 22:52 UTC (permalink / raw)
To: Adrian Hunter; +Cc: linux-mtd@lists.infradead.org
Hi,
> I finally got around to trying OneNAND Cache Read Operation.
>
> I got the same results as you. Just a 1 - 2 % increase in speed
> on OMAP3. It seems that the OMAP memory controller (GPMC) is not
> capable of transferring the data from bufferRAM fast enough to
> achieve the maximum OneNAND read speed.
>
Yes, it's right.
For more. OneNAND has Block synchronous read. It reads whole block at
a time. but there's no performance gain compare to read-while-load at
least in OMAP.
Thank you,
Kyungmin Park
^ permalink raw reply [flat|nested] 2+ messages in thread
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2008-08-20 7:36 OneNAND Cache Read Operation Adrian Hunter
2008-08-20 22:52 ` Kyungmin Park
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