Hi,
On Fri, Dec 02, 2011 at 13:05:22, Heiko Schocher wrote:
> Hello,
>
> trying Linux 3.2.0-rc3 on an am1808 based board using MMCSD1 controller,
> and facing problems with using DMA. Deactivating use_dma=0 in the
> davinci_mmc controller and mmc works in pio mode without problems.
> So there are no hardware problems, pinmux is ok, psc are all on.
>
Please refer to the discussion at [1] where similar issue was discussed. Go through the
entire thread. In the patch posted by Juha in this link, I see that except for the below
hunk all others are integrated.
@@ -1508,7 +1506,7 @@ static int __init edma_probe(struct platform_device *pdev)
* started by the codec engine will not cause audio defects.
*/
for (i = 0; i < edma_info[j]->num_channels; i++)
- map_dmach_queue(j, i, EVENTQ_1);
+ map_dmach_queue(j, i, edma_info[j]->default_queue);
queue_tc_mapping = info[j].queue_tc_mapping;
queue_priority_mapping = info[j].queue_priority_mapping;
Can you check whether the above patch fixes your issue?
[1] http://www.mail-archive.com/davinci-linux-open-source@xxxxxxxxxxxxxxxxxxxx/msg17926.html
Thanks,
Sudhakar
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