Re: i.MX6 UDC driver fsl-usb2-udc versus chipidea driver

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On Fri, Apr 04, 2014 at 09:58:10AM +0200, Marco Zamponi wrote:
> I am developing a usb perihperal with the goal of high data throughput
> on a freescla i.Mx6 (phyFlex).
> My current UDC driver is "fsl-usb2-udc" on kernel 3.0.35.
> I was recommended the chipidea driver introduced in kernel 3.5 since
> it would perform better.
> Currently I have speed issues when I use gadgetfs with bulk transfer
> (~15MB/s) and I was wondering if the UDC driver could really be such a
> bottleneck.
> Thanks for any input!
> --

Which kernel branch you are using? Mainline or internal?

The bottleneck should not be at udc driver, try to improve
gadgetfs, and send as many as requests to udc driver.

-- 

Best Regards,
Peter Chen

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