[U-Boot] [PATCH] Add support for the MPC5121e USB Host controller.

[Damien Dusha]

Hi Elinar,


> The root hub is detected and also it detects a device connected to the
> controller.
> However, by testing with a usbstick (mass storage) it fails to detect the
> device as a storage device.
>
> I have here a debug printout which is being printed (with debug enabled)
> during execution of the command 'usb start':
>
> Unfortunately, our experience also shows  some USB Mass Storage Devices
work better than others.   For example, we are able to reproduce some of the
issues we have on the SheevaPlug (Marvel Kirkwood ARM) with the same
combinations of hubs and USB sticks.  Do you have another USB Host board
available to try to see if your issue is reproducible across platforms?

Are you able to list the hub and the USB Stick that you are using below?  Is
it reproducible across different hubs and sticks?  For example, SMSC hubs
tend to exhibit the problems far more than Genesys Logic hubs.   I have no
experience with Cypress hubs as to whether they perform any better or not.

If you search the mailing list, I asked about the same issue some time ago.

  -- Damien