From mboxrd@z Thu Jan  1 00:00:00 1970
From: Richard Danter <richard.danter@ntlworld.com>
Date: Fri, 15 Jul 2005 15:00:26 +0100
Subject: [U-Boot-Users] AMD29LV800T in 16bit mode x4 devices (64bit bus)
 - Fixed
In-Reply-To: <42D41C31.2090903@ntlworld.com>
References: <20050711210531.C1103353AED@atlas.denx.de> <42D41C31.2090903@ntlworld.com>
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Richard Danter wrote:
> Wolfgang Denk wrote:
> 
>> In message <42D2DC59.6090507@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.

Rich