root@OpenWrt:~# lsmod | grep hcd
ehci_hcd               31532  1 ehci_platform
uhci_hcd               16432  0
usbcore               114630  3 uhci_hcd

root@OpenWrt:~# lsusb
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

root@OpenWrt:~# lspci -vnn
00:1d.2 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB UHCI Controller #3 [8086:2936] (rev 03) (prog-if 00 [UHCI])
        Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
        Flags: bus master, fast devsel, latency 0, IRQ 18
        I/O ports at d0a0 [size=32]
        Kernel driver in use: uhci_hcd

00:1d.7 USB controller [0c03]: Intel Corporation 82801I (ICH9 Family) USB2 EHCI Controller #1 [8086:293a] (rev 03) (prog-if 20 [EHCI])
        Subsystem: Red Hat, Inc QEMU Virtual Machine [1af4:1100]
        Flags: fast devsel, IRQ 19
        Memory at fc412000 (32-bit, non-prefetchable) [size=4K]