[U-Boot-Users] [PATCH] MPC83xx platform memory access performance improved

Kumar Gala galak at kernel.crashing.org
Tue May 30 18:04:44 CEST 2006

On May 30, 2006, at 11:03 AM, Wolfgang Denk wrote:

> In message <DA6718F1-0DE0-4FF2-8080- 
> B3C732CC89F4 at kernel.crashing.org> you wrote:
>>> 2. Memory write
>>> When ECC enable, CPU write with 64bit. It makes DDR bus more
>>> effective.
>> we need to be careful with this since not all 83xx have the ability
>> to do 64bit writes (832x doesn't have FP)
> Also, what will happen on a 32 bit wide bus? [This was  the  szenario
> in our case - a 32 bit wide memory interface.]

I would hope the system does the right thing in this case.   
(Otherwise all FP code would be broken :)

- k

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