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

[Wolfgang Denk]

Dear Jens,

In message <49489B37.9020000 at tqs.de> you wrote:
> 
> Because I'm neither familiar with qemu nor with svn I can't do that
> with little effort (installation, familiarization, etc.). Beside that,

Actually you just have to check out and run it - that does not require
an in-depth understanding or long learning curve.

> how could a virtual machine simulate the real bus access with it's
> bus timing? If I'm right in this point, only testing on another
> architecture is possible, but no performance test.

Indeed. But it is a very important data point to know that your patch
does not break the CFI driver on as  many  architectures  as  we  can
test;  and  neither  you  nor we hve allthat many boards available as
real hardware, so simulated machines fill an important gap.

> Shortly, I will get a TQM8548 with Samsung Flash. It's a top boot
> system, but also has a 2x16 Bit Flash connection. For my part, I can
> only offer you a test on this board.

Well, you probably could test in on a TQM8260 as well, which has a 64
bit bus (4 x 16 bit). And you should have access to trab and  cmc_pu2
and TQM5200 / TQM5200s and TQM834x and TQMA31 so you actually test it
on a much wider range of boards than most of us.

> Stefan, as the CFI custodian, how is your procedure to check such kind
> of common code patches?

We ask the people who have access to real hardware to test on their
boards, and we accompany that by tests on simulated hardware.

Best regards,

Wolfgang Denk

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