[U-Boot] AM335x: enabling datacache in SPL slows down system?

[Tom Rini]

On Fri, Jun 21, 2013 at 08:46:47PM +0200, Jeroen Hofstee wrote:

> Hello Wolfgang,
> 
> On 06/21/2013 07:33 AM, Wolfgang Denk wrote:
> >We observed the very same issue with the verry first prototype
> >implementation of Falcon mode on an AM3517 based board. [..]
> For the am3517 the only thing needed is to add SRAM
> to the known memory. See [1], that should change the
> cache misses (which likely cause the extra delays) to
> actual caches. U-boot only adds the detected memory
> and since U-boot is running from DRAM and SPL is not,
> the difference seems obvious.

This would be my guess as folks have done functional but not
mainlineable changes in this direction, as well as DMA, before.

-- 
Tom
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