ehci_disown - Olimex ARM A20 Lime & USB FTDI RS-485 shuts down USB port

Hans Petter Selasky hps at selasky.org
Wed May 11 06:47:23 UTC 2016


Hi,

ehci_disown() means that there should be a full speed controller that 
should handle the device, because it is not high-speed. Does your board 
have OHCI/UHCI or only EHCI? How are the USB parts wired. Is there a 
High-Speed TT (USB HUB chip) connected to the EHCI port?

Can you compare dmesg from Linux and FreeBSD and look for the USB parts.

--HPS


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