On Fri, Mar 26, 2010 at 11:17:07PM +0100, Wolfgang Wegner wrote:

Hi Josh,

On Fri, Mar 26, 2010 at 02:32:02PM -0700, Josh Triplett wrote:

quoted

On Fri, Mar 26, 2010 at 12:22:32PM -0600, Grant Likely wrote:

quoted

Not all CF adapters have all the pins wired up that are needed for
*DMA modes.  That is the most likely problem.

True, but we bought a card that specifically advertises support for
UDMA, and says UDMA right on the card's label.

http://store.lexar.com/?productid=CF8GB-300-381

Grant was referring to the adapter, not the card!

In fact I still have to see a single CF-to-IDE adapter that does
have the wires needed for (U)DMA without me soldering them in place...

Oh!  OK, that makes more sense.

However, according to one of our hardware hackers, Andrew Greenberg
(CCed), the STK5200 development breakout board for the TQM5200 *does*
have the DMA pins wired up correctly, at least according to its
schematic.  That doesn't guarantee that the board matches the schematic,
of course.

Any other ideas for things we could check to try to track down this
problem?

- Josh Triplett