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Is it possible to use USB-OTG as EHCI host in U-Boot on Sabrelite board?

Question asked by Rafal Fabich on Mar 11, 2013
Latest reply on Mar 13, 2013 by Fabio Estevam

Hi all,


I am Rafal and this is my first post here, so I would like to say hello to everyone


I have been using the Sabrelite board from Boundary Devices for some time and now I have been working on U-Boot.

I use the U-Boot code from Boundary Devices and the current implementation supports Host1 only. I would like to use OTG as host but the OTG is unfortunately not supported. I wanted to implemet the lowest layer for the ehci driver (like it is done for Host1) but it does not seem to work. The result is that the U-Boot creates the EHCI hub, but no device is detected. I also tried to follow the SDK code which downloaded from here, but I did not succeed.

I suppose it is possible to use USG-OTG instead of Host1 as EHCI host in U-Boot. Is there something I am missing?

By the way, the device is connected via special adapter and the power (5V) is provided to it.


Kind regards,