On Mon, Mar 15, 2010 at 11:44 AM, Ben Gamari <bgamari.foss@xxxxxxxxx> wrote: > While I can reliably see a signal sent on the SIMO line, I have not once been > able to recieve anything but zeros in return. I have verified that the the SOMI > ball works as expected as a GPIO input. a) You might as well want to verify your SPIDEV setup by using the same pins in GPIO mode and controlling them by gpio-bitbanging i/f ... first on both boards and then on either, to more accurately diagnose the problem). b) Maybe line-strength settings should be checked, if available, of the relevant pins? hth -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html