[U-Boot] [PATCH] spi/atmel: add AT45DB321D support
Brad Bozarth
yumbrad at gmail.com
Thu Jan 8 21:33:09 CET 2009
Linux - yes, it's supported. Uboot - I have another patch that allows
power of 2 mode (I believe it's on the blackfin portal).
Sent from my mobile
On Jan 8, 2009, at 2:51 AM, Mike Frysinger <vapier at gentoo.org> wrote:
> On Wednesday 07 January 2009 14:40:30 Ulf Samuelsson wrote:
>> tis 2009-01-06 klockan 14:48 -0800 skrev Brad Bozarth:
>>> Hmm... looking in the datasheet I have, it says:
>>> Flexible Erase Options
>>> – Page Erase (512 Bytes)
>>> – Block Erase (4 Kbytes)
>>> – Sector Erase (64 Kbytes)
>>> – Chip Erase (32 Mbits)
>>
>> The dataflash is normally 528/1056 bytes per page.
>> D versions can be configured to have a 512/1024 bytes per page
>> but that is wasting a couple of percent of the dataflash.
>
> Blackfins can only boot with power of two flashes, so power of two
> page mode
> has to be supported for us ... not sure if the latest drivers have
> been fixed
> yet (both in u-boot and Linux)
> -mike
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