On Fri, Oct 19, 2018 at 06:17:31PM +0200, Josep M. Mirats Tur wrote:
> Hi Bin,
> 
> I was referring to the output of usbmon I attached in the previous
> message (attached again)
> 
> I'm sorry but I do not know how to acces the kernel menuconfig to
> disable the MUSB CPPI DMA, how should I do that?

In kernel menuconfig, go to

Device Drivers  --->
        [*] USB support  --->
                <M>   Inventra Highspeed Dual Role Controller (TI, ADI, AW, ...)
                ...
                <M>     TI DSPS platforms
                        *** MUSB DMA mode ***
                [*]     Disable DMA (always use PIO)

Please ensure the last option ("Disable DMA") is checked.

Regards,
-Bin.

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