NanoNote UDC DMA Issue

richard -rw- weinberger richard.weinberger at
Sun Jun 23 17:14:44 EDT 2013


While cleaning up my apartment I've found my Ben NanoNote.
After playing a bit with it I remembered why I've neglected it.
USB Device does not have DMA support and is therefore very slow.
Also the USB mass storage gadget seems to need DMA.
The Linux driver supports it, but it is disabled by default and if I enable
DMA USB Devices does not work at all.

Almost three yeas ago I've reported that issue:
- no replies so far.

Now I'm wondering, is this a known issue?
Is DMA for the UDC just broken in HW?
Does QI care about that?


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