[U-Boot] Add new NAND flash

[Matthias Weißer]

Hi Scott

Am 01.10.2010 21:52, schrieb Scott Wood:
> On Fri, 1 Oct 2010 16:31:40 +0200
>> MT29F16G08CBABA
>> The NAND is connected (8 bit wide) to an iMX25 which is booting from 
>> NOR. So the NAND is only a mass storage device. I am able to read the ID 
>> of the chip.
>>
>> 2Ch 48h 04h 46h 85h
>>
> 
> According to http://patchwork.ozlabs.org/patch/60042/, this chip
> is supposed to have ID: 2C 48 00 26 89

Take a closer look at the table in the link. There is a MT29F16G08ABABA
with ID: "2C 48 00 26 89" and a MT29F16G08CBABA with ID: "2C 48 04 46
85". The second one is the one I have here. I have also a datasheet of
the chip here from where I copy & pasted the above ID. The ID gets read
correctly from the chip by u-boot NAND subsystem.

> Do you have a datasheet that says what it's supposed to be?
> 
> The bytes may be getting corrupted.  If you hack up the code to
> override the ID bytes with good ones, do you see any problems doing
> real I/O?

I tried that. If I run a "nand bad" command then it never returns and
keeps performing some actions on the NAND device as I can see with an
oscilloscope.

-- 
Matthias Weißer