Driver support new NOR flash JS28F256P30BF

[H Hartley Sweeten]

On Thursday, August 20, 2009 1:42 PM, Spinelli, Claudio wrote:
> I am wondering if anybody has kernel driver support for the
> following NOR flash part number JS28F256P30BF, this component
> is replacing JS28F256P30B85 which is going obselete.

It appears this change is due to a process migration from 130nm
to 65nm.

http://www.numonyx.com/Documents/PCN/PCN109030-02_P30_130_65nm_conversion.pdf

The new 256Mb part appears to be compatible with the older version
except for a slower initial access time. It also adds a couple new
features:

* 512-word buffer vs. 32-word buffer
* password access
* blank check

Overall it appears the current driver (physmap.c) should work fine.
It might need some tweaking in order to take advantage of the larger
buffer size and the password access and blank check commands.

Just my 0.02...

Regards,
Hartley