Hi, >>> Qemu doesn't provide some properties, such as "bus", to specify which EHCI >>> controller the >>> usb device attach to. If we use "device" and "usb-storage", we never >>> attach the usb >>> device to the specified EHCI controller. >> >> -device certainly ought to let you specify a bus= property; > > Sorry, I don't know the bus= property. > But why both EHCI controller are named "usb-bus.0"? How to distinguish the > different usb usb?
That is the default name. For usb controllers added via -device the bus name is derived from the device name, i.e. '-device usb-ehci,id=ehci" gives you a bus named "ehci.0". For builtin devices that doesn't work though as you don't have to add them manually. Guess they should be explicitly named then by zynq_init(). cheers, Gerd
