On 02/23/2014 03:22 PM, David Lambert wrote:
On 02/23/2014 03:17 PM, Robert Nelson wrote:
On Sun, Feb 23, 2014 at 3:06 PM, David Lambert <[email protected]
<mailto:[email protected]>> wrote:
I don't know if this is an issue specific to the 3.13 kernel, but
I have not seen this on 3.8.13. It appears whenever I attempt to
stop UVC video acquisition. I suspect it is something to do with
DMA vs. PIO. Please let me know if I should post this elsewhere,
or if this is the correct place.
Hi Dave,
Is this the classic white or black beaglebone?
Black
I'd try with disabling:
CONFIG_USB_TI_CPPI41_DMA
and enabling
CONFIG_MUSB_PIO_ONLY
That was the next thing on my list. I'll keep you posted.
The cpu will do all the transfers...
That worked fine. I was hoping the DMA was mature enough to offload the
CPU. Evidently, not yet :-\
Regards,
Dave.
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