Hello, We are working with a host controller on a PowerPC embedded board. It is an EHCI host controller. However, there are no UHCI/OHCI host controllers on the board. Therefore, if a FS/LS device plugs onto the board, Linux will try to hand the port to a companion controller, which is not there, and this causes the EHCI host controller die (or maybe the port is marked dead?), and unplug the device causes no "disconnect" report. The host controller also does not respond to further plug in of a HS device. I wonder whether there is a way to configure the kernel such that if a FS/LS device plugged in (where the host controller will not enable the port), Linux will tell the user that "FS/LS devices are not supported", and do nothing. When the device disconnects, "disconnect" will be reported, and further plug-ins of HS devices can continue on. The host controller supports the standard EHCI interface, and works nicely with current Linux EHCI driver, we use the flag "HCD_USB2" for the device, which may not be appropriate, since USB2.0 supports all speeds. However, the other flag "HCD_USB11" is even more inappropriate, since we are HS only. Thanks, Julie. This email and any attachments are intended for the sole use of the named recipient(s) and contain(s) confidential information that may be proprietary, privileged or copyrighted under applicable law. If you are not the intended recipient, do not read, copy, or forward this email message or any attachments. Delete this email message and any attachments immediately. -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
