DMA Puzzle

[Kelsey Dawes]

On Thu, Apr 12, 2007 at 04:23:00PM -0700, Charles Krinke wrote:
> My apologies for the complexity of this e-mail but DMA seems to be a
> complex subject. Thanks to Ed.S a while back, I have DMA working fine
> from U-Boot, but I am having a problem in Linux with the 8541 processor
> using the 2.6.17.11 kernel. I need to DMA through an outbound address
> translation window setup at 0x8800_0000 and the chip I am DMA'ing to is
> responding to 64bit DAC (Dual Address Cycles) and its memory is setup

<SNIP>

Hi Charles - have you checked the device errata for 8541?  I do not have the details in front of me, but do recall several items specific to DMA  signal to complete DMA transaction.  


Worth a look anyway - 

Kelsey