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List:       uclinux-dev
Subject:    RE: [uClinux-dev] PATCH: speedup of flash writing ( cfi_cmdset_0002.c)
From:       "Jerry (Peng) Yang" <jerryy () broadcom ! com>
Date:       2006-04-20 11:50:01
Message-ID: C9B9C417E0D1E94AA3350C28404CD8C1C5A6DA () NT-IRVA-0750 ! brcm ! ad ! broadcom ! com
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I have checked it! really great work!! 

With Best Regards!
 
Jerry (Peng) Yang
Broadcom Software Team, Beijing, China
Phone: 86 - 10 - 62702522 - 88058(88019 lab)
Fax: 86 - 10 - 68054731
 

-----Original Message-----
From: uclinux-dev-bounces@uclinux.org [mailto:uclinux-dev-bounces@uclinux.org] On \
                Behalf Of Falk Brettschneider
Sent: Thursday, April 20, 2006 6:19 PM
To: uclinux-dev@uclinux.org
Cc: microblaze-uclinux@itee.uq.edu.au
Subject: [uClinux-dev] PATCH: speedup of flash writing ( cfi_cmdset_0002.c)

Hi,
I patched drivers/mtd/chips/cfi_cmdset_0002.c with the result that writing to my \
flash is significantly faster now (10 times or more). I don't use bypass mode, but \
switch to fast programming mode. In that mode I can write 32 dwords at once instead \
of the usual 16bit access. It works perfectly here, but look at the patch, it needs \
some changes to generalise it. E.g. I hard-wired my flash base address. I want to \
give my patch to you as pattern for a better fix for speedup of that driver family. \
I'm also not sure if that fast-programming mode (AA 55 25 count) is available for all \
CFI chips in general. Any feedback would be welcome.
Cheers, F@lk

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