From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] for JEDEC flash, command of word programing should be issued relatvie to base
Date: Wed, 8 Jul 2009 11:26:25 +0200 [thread overview]
Message-ID: <200907081126.25171.sr@denx.de> (raw)
In-Reply-To: <ec1aee9f0907062227t5e904fe6rf620f6cbc57c9415@mail.gmail.com>
On Tuesday 07 July 2009 07:27:35 Po-Yu Chuang wrote:
> For JEDEC flash, we should issue word programming command relative to
> base address rather than sector base address. Original source makes
> SST Flash fails to program sectors which are not on the 0x10000 boundaries.
>
> e.g.
> SST39LF040 uses addr1=0x5555 and addr2=0x2AAA, however, each sector
> is 0x1000 bytes.
>
> Thus, if we issue command to "sector base (0x41000) + offset(0x5555)",
> it sends to 0x46555 and the chip fails to recognize that address.
>
> This patch is tested with SST39LF040.
>
> Signed-off-by: Po-Yu Chuang <ratbert@faraday-tech.com>
This patch is line wrapped and can't be applied. Please fix and resubmit. And
while at it please use a somewhat shorted subject.
Thanks.
Best regards,
Stefan
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next prev parent reply other threads:[~2009-07-08 9:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-07-07 5:27 [U-Boot] [PATCH] for JEDEC flash, command of word programing should be issued relatvie to base Po-Yu Chuang
2009-07-08 9:26 ` Stefan Roese [this message]
2009-07-08 9:49 ` Po-Yu Chuang
2009-07-08 9:54 ` Stefan Roese
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