On 02/24/2010 12:35 PM, Tony Lindgren wrote:
* Philip Balister<philip@xxxxxxxxxxxx> [100224 11:31]:
I am trying to setup a dma operation to copy memory from GPMC
address space into RAM. The only examples using the omap-dma api use
hardware triggers.
When I start a transfer, I end up with a DMA transaction error when
I start the transfer.
Does anyone have a good example of a software transfer? Currently, I
am tracing the omap dma api to see how things map into the registers
....
Enjoy the GPMC timings. I recommend attaching a logic analyzer there
to verify the things are right for the key lines if you have chance.
Hmm I thought the hardware triggers were optional in at least
drivers/usb/musb/tusb6010_omap.c.. Maybe I don't remember correctly.
GPMC is easy :)
Basically, I have a device attached to a GPMC chip select and I need to
read/write to it. The GPNC bit is fine, we'd just like to use the DMA
controller to move the data.
Philip
--
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
