[U-Boot-Users] U-boot ColdFire development

[Stefan Roese]

Hi TsiChung,

On Saturday 30 June 2007, Wolfgang Denk wrote:
> > There is no speed performance in erasing and reading between common CFI
> > flash driver and board specific flash driver, except programming. CFI
> > flash driver needs ~80s to program 1MB data compare to board specific
> > flash driver needs only ~14s. User has a choice to select them either by
>
> Are you absolutely sure about this? Did you enable
> CFG_FLASH_USE_BUFFER_WRITE in your board config file?
>
> If yes, then can you please try to explain  *why*  there  is  such  a
> speed  difference?  In  general,  the CFI driver should be able to do
> exactly the same what a custom flash driver can  do  -  if  there  is
> anything missing, it should be added. Patches welcome.

Yes, I would expect when the write buffering is enabled (Wolfgang mentioned 
the config option above) the programming speed should be the same to your 
board specific driver.

Best regards,
Stefan

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