> The reason is > that even though you don't really put any load on the bus, the PHY still > samples VBUS levels to know when the session is valid (VBUS > 4.4V). Hmmm.... that might be the cause of some 'random' USB disconnects we were seeing. We 'fixed' them by cutting the wire in the usb cable and driving the devices '5v sense' from its local 5v rail. (The USB device is permanently connected to the motherboard.) The ochi driver did recover from the disconnect, but xhci got terribly confused. An 'interesting' experiment would be to glitch the 5v line low while the USB device is running from some alternate source (or a diode+capacitor). David -- 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
