raspberry pi zero and SLOW USB HID

[Wojciech Puchar]

>
> #define DWC_OTG_HOST_TIMER_RATE 10 /* ms */

can i change this to 1?

>
> Which is because we want save a little power polling the DWC OTG.
>
> To avoid this:
>
> USB transfers must be double buffered! That means you must submit two 
> IN-endpoint jobs, instead of just one. Then the driver will understand there 
> is more work to do, and not go to idlewait!
>
> --HPS
>
>