[U-Boot] [PATCH 0/2] CFI: increase performance

Jean-Christophe PLAGNIOL-VILLARD plagnioj at jcrosoft.com
Tue Dec 16 18:13:15 CET 2008


On 17:46 Tue 16 Dec     , Jens Gehrlein wrote:
> Jean-Christophe PLAGNIOL-VILLARD schrieb:
> > On 17:25 Tue 16 Dec     , Jens Gehrlein wrote:
> >> Hi list,
> >>
> >> The following patches should increase the performance of the CFI driver,
> >> particularly with regard to single word programming mode.
> >>
> >> I tested it on TQM5200S with NOR-Flash Samsung K8P2815UQB, which has no
> >> write buffer. At least no write buffer, that could be programmed using
> >> standard commands.
> >>
> >> Performance increase on this TQM is about factor 2.6 (37 KiB/s -> 95 KiB/s).
> >> On the same module with Spansion S29GL128N (with write buffer) it is about
> >> factor 1.2 (455 KiB/s -> 585 KiB/s).
> >>
> >> TQM5200 is a bottom boot module with 2x16 Bit Flash connection. Could someone
> >> test the patches on other HW, particularly top boot, other CPU, other flash
> >> width, please?
> > Could you try it against the qemu SVN HEAD
> 
> ??? Sorry, what is qemu SVN HEAD ???
> 
In qemu you have 2 boards emulated with u-boot support qemu_mips and SX1

it'll be nice to test them also

please note they are only in the SVN tree of qemu

Best Regards,
J.


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