[U-Boot-Users] AMD29LV800T in 16bit mode x4 devices (64bit bus) - Fixed

Richard Danter richard.danter at ntlworld.com
Fri Jul 15 16:00:26 CEST 2005

Richard Danter wrote:
> Wolfgang Denk wrote:
>> In message <42D2DC59.6090507 at ntlworld.com> you wrote:
>>> Is there a driver that supports this flash within U-Boot? I can't see 
>>> one, but want to make sure I didn't miss it before I reinvent the wheel!
>> There are several. First, there is the general CFI driver,  and  then
>> there are several board specific drivers like board/tqm8260/flash.c
> I have tried both of the suggested drivers with neither working for me.
> I have spent more time looking at the tqm8260/flash.c and have managed 
> to make some improvements. Initially it was unable to even read back the 
> device type but I noticed that if I single stepped (using JTAG) the 
> flash_get_size() function then it _was_ able to correctly read the 
> device type.

It seems with my board I _have_ to write data 64-bits at a time. Writing 
the lower 32-bits and then the upper 32-bits does not work.

I'm using the FP registers now and all works fine.


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