MTD Limitations

[Adrian Hunter]

Ashish Pareek wrote:
> Hi  Adrian,
> Currently we are using DM355 based Custom board , that will be having 
> another 4k page Nand from Micron (MT29F64G08TAAWP)in parallel with 
> exisitng 2k pg Nand (MT29F16G08FAAWC) . we have 4 diff chip select (2 
> per chip )determined by the CS0 along with 2 address lines using a 
> decoding logic .
> 
> I dont think any support for 4k pg NF is available . How could be the 
> design possible ?

You will have to make the changes to support 4k pg NF yourself.  I do not
have such a device, so I do not know exactly what the requirements are.

> 
> Ashish
> ----- Original Message ----- From: "Adrian Hunter" 
> <ext-adrian.hunter at nokia.com>
> To: "Ashish Pareek" <ashish.pareek at drishyasystems.com>
> Cc: "linux-mtd Mailing List" <linux-mtd at lists.infradead.org>
> Sent: Monday, December 29, 2008 1:27 PM
> Subject: Re: MTD Limitations
> 
> 
>> Ashish Pareek wrote:
>>> Does MTD has Limitations to support Nand Flash <=4GB ? Has this issue 
>>> is fixed in latest MTD GIT ?
>>
>> The latest MTD GIT does support 4GB NAND flash, however you will
>> need to check your particular driver does not have limitations.
>>
>> Please be aware that the ioctls used by mtd-utils are limited to
>> 32-bit sizes.  That means they do *not* support 4GiB, but they are
>> probably OK for less than 4GiB i.e. 4GiB minus one eraseblock size.
>>
>