我们在nx重复上电测试中发现，nx的usb控制器枚举设备失败。重新插拔USB从设备也不进行识别。
版本信息：
R32 (release), REVISION: 4.3, GCID: 21589087, BOARD: t186ref, EABI: aarch64, DATE: Fri Jun 26 04:34:27 UTC 2020
下面的内核信息：
[ 13.475078] eqos 2490000.ether_qos eth0: Link is Up - 100Mbps/Full - flow control rx/tx
[ 13.476337] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[ 19.021421] usb 2-3: unable to read config index 0 descriptor/start: -110
[ 19.021587] usb 2-3: can’t read configurations, error -110
[ 20.061570] tegra-xusb 3610000.xhci: controller firmware hang
[ 20.061719] tegra-xusb 3610000.xhci: hcd_reinit is disabled or in progress
[ 24.144845] usb usb2-port3: Cannot enable. Maybe the USB cable is bad?
[ 24.145057] usb usb2-port3: attempt power cycle
[ 48.348027] tegra-xusb 3610000.xhci: Stopped the command ring failed, maybe the host is dead
[ 48.386424] tegra-xusb 3610000.xhci: Host not halted after 16000 microseconds.
[ 48.386590] tegra-xusb 3610000.xhci: Abort command ring failed
[ 48.390620] tegra-xusb 3610000.xhci: Error while assigning device slot ID
[ 48.390765] tegra-xusb 3610000.xhci: Max number of devices this xHCI host supports is 36.
[ 48.390926] usb usb2-port3: couldn’t allocate usb_device
[ 48.391116] tegra-xusb 3610000.xhci: HC died; cleaning up
[ 48.391226] tegra-xusb 3610000.xhci: hcd_reinit is disabled or in progress
[ 48.391256] usb 1-1: USB disconnect, device number 2
[ 53.592803] tegra-xusb 3610000.xhci: xHCI host not responding to stop endpoint command.
[ 53.592993] tegra-xusb 3610000.xhci: Assuming host is dying, halting host.
[ 53.633669] tegra-xusb 3610000.xhci: Host not halted after 16000 microseconds.
[ 53.633896] tegra-xusb 3610000.xhci: Non-responsive xHCI host is not halting.
[ 53.634044] tegra-xusb 3610000.xhci: Completing active URBs anyway.
[ 53.634335] tegra-xusb 3610000.xhci: HC died; cleaning up
[ 53.634501] tegra-xusb 3610000.xhci: hcd_reinit is disabled or in progress