Dear All
During the recent development in DM3725, we found there will be crash or
instability when we try to use DMA based USB. We found a solution on your
wiki. However, disabling DMA caused much higher CPU occupation than we
could afford. It is really an urgent issue!
Here are some questions:
1: What is the root cause of this issue? hardware? Could DMA be enabled in
the future software?
2: Could you please help to check if there is any future plan on it?
hardware or software.
BTW, Wiki Info:
http://processors.wiki.ti.com/index.php/Sitara_SDK_5.03.02_Release_Notes#Sitara_SDK_05.03.02_Release_Notes
|-------------------+----------+-------+----------+-----+-----------+--------------------------------------------|
| ARM_MPU.KERNEL.39 | Critical | Other | SDK | ALL | USB DMA | Devices which use the Mentor MUSB core |
| | | | 05.03.02 | | disabled | currently disable the DMA due to |
| | | | | | | instability issues. This will cause |
| | | | | | | degradation from the expected USB |
| | | | | | | throughput performance. |
Thanks a lot for your reply！