AT25DF321A Support

[Christophe Fauvel]

Hello,

I am using an FT2232H mini module for flashing an AT25DF321A SPI flash 
under linux (Ubuntu 10.10, kernel 2.6.35-32-generic), which is supported 
according to your Supported Hardware list. I have tested several 
flashrom revisions (v0.9.2 pré-compiled, v0.9.5 and V0.9.6.xx compiled 
with GCC 4.4.5).

* with rev0.9.2, the device is listed as UNTESTED when reading,
    writing or erasing. I have multiple errors when accessing the device
    but I can read, write and erase small amount of data.

*   with rev0.9.5, I also have some issues with the device, but with a
    few retries I am able to fully read, write and erase the chip, which
    is also listed as UNTESTED.

*   with rev0.9.6, however, the device is listed as Unknown SPI chip
    and I cannot access it.

Have you already noticed this issue ?

Best regards,

[Stefan Tauner]

On Wed, 14 Nov 2012 09:11:10 +0100
Christophe Fauvel  wrote:
> Hello,
>
> I am using an FT2232H mini module for flashing an AT25DF321A SPI flash 
> under linux (Ubuntu 10.10, kernel 2.6.35-32-generic), which is supported 
> according to your Supported Hardware list. I have tested several 
> flashrom revisions (v0.9.2 pré-compiled, v0.9.5 and V0.9.6.xx compiled 
> with GCC 4.4.5).
>
> with rev0.9.2, the device is listed as UNTESTED when reading,
> writing or erasing. I have multiple errors when accessing the device
> but I can read, write and erase small amount of data.
>
> with rev0.9.5, I also have some issues with the device, but with a
> few retries I am able to fully read, write and erase the chip, which
> is also listed as UNTESTED.
>
> with rev0.9.6, however, the device is listed as Unknown SPI chip
> and I cannot access it.

it is not listed as unknown, but it is not detected (apparently).
actually the chip has been marked as fully tested in 0.9.6 due to this
report:
http://www.flashrom.org/pipermail/flashrom/2012-July/009492.html

from what you write i would assume that you have a bad connection
between the programmer and the chip and it does only work by "accident"
sometimes. if you believe otherwise please send a verbose log.