Platform: RK3399
OS: Android 7.1
Kernel: v4.4.83
记录下各个速率及控制器的枚举/断开Log，方便以后对比调试。
USB3.0 OTG设备
控制器： DWC3
USB3.0 Type-C 插上PC:
[ 4488.489076] fusb302 4-0022: CC connected in 0 as UFP
[ 4488.658670] phy phy-ff770000.syscon:usb2-phy@e450.5: charger = USB_SDP_CHARGER
[ 4488.660671] rockchip-dwc3 usb@fe800000: USB peripheral connected
[ 4489.004260] android_work: sent uevent USB_STATE=CONNECTED
[ 4489.008072] android_work: sent uevent USB_STATE=DISCONNECTED
[ 4489.133419] configfs-gadget gadget: high-speed config #1: b
[ 4489.133654] android_work: sent uevent USB_STATE=CONNECTED
[ 4489.134544] android_work: sent uevent USB_STATE=CONFIGURED
[ 4491.386969] fusb302 4-0022: PD disabledUSB3.0 Type-C 断开:
[ 4572.516623] fusb302 4-0022: connection has disconnected
[ 4572.517584] fusb302 4-0022: fusb302 send extcon to disable vbus 5v
[ 4572.610115] android_work: sent uevent USB_STATE=DISCONNECTED
[ 4572.612987] configfs-gadget gadget: unbind function 'Function FS Gadget'/ffffffc0bea04238
[ 4572.615638] rockchip-dwc3 usb@fe800000: USB unconnected
[ 4572.615717] android_work: did not send uevent (0 0 (null))
[ 4572.672178] fusb302 4-0022: connection has disconnected
[ 4572.674225] fusb302 4-0022: fusb302 send extcon to disable vbus 5vUSB3.0 Host Super Speed设备
速率： Super-speed
控制器： xHCI
USB3.0 Type-A 插USB3.0的U盘：
[ 4693.778548] usb 4-1: new SuperSpeed USB device number 2 using xhci-hcd
[ 4693.804750] usb 4-1: New USB device found, idVendor=0bda, idProduct=0316
[ 4693.805444] usb 4-1: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 4693.806132] usb 4-1: Product: USB3.0-CRW
[ 4693.806174] usb 4-1: Manufacturer: Generic
[ 4693.806200] usb 4-1: SerialNumber: 20120501030900000
[ 4693.818266] usb-storage 4-1:1.0: USB Mass Storage device detected
[ 4693.821633] scsi host0: usb-storage 4-1:1.0
[ 4694.836189] scsi 0:0:0:0: Direct-Access Generic- SD/MMC 1.00 PQ: 0 ANSI: 6
[ 4694.845673] sd 0:0:0:0: Attached scsi generic sg0 type 0
[ 4695.544190] sd 0:0:0:0: [sda] 7806976 512-byte logical blocks: (4.00 GB/3.72 GiB)
[ 4695.545115] sd 0:0:0:0: [sda] Write Protect is off
[ 4695.545722] sd 0:0:0:0: [sda] Write cache: disabled, read cache: enabled, doesn't support DPO or FUA
[ 4695.552537] sda: sda1USB3.0 Type-A 断开U盘：
[ 4771.524905] usb 4-1: USB disconnect, device number 2USB3.0 Host High Speed设备
速率： High-speed
控制器： xHCI
USB3.0 Type-A 插Camera：
[ 4822.481344] usb 3-1: new high-speed USB device number 2 using xhci-hcd
[ 4822.622560] usb 3-1: New USB device found, idVendor=0bda, idProduct=0230
[ 4822.622649] usb 3-1: New USB device strings: Mfr=3, Product=1, SerialNumber=2
[ 4822.622679] usb 3-1: Product: ICT567-HDR
[ 4822.622704] usb 3-1: Manufacturer: ICT HDR Commen
[ 4822.622729] usb 3-1: SerialNumber: 200901010001
[ 4822.636065] uvcvideo: Found UVC 1.00 device ICT567-HDR (0bda:0230)
[ 4822.644962] input: ICT567-HDR as /devices/platform/usb@fe900000/fe900000.dwc3/xhci-hcd.6.auto/usb3/3-1/3-1:1.0/input/input3USB3.0 Type-A 断开Camera：
[ 4902.707853] usb 3-1: USB disconnect, device number 2USB2.0 Host High Speed设备
速率： High-speed
控制器： EHCI
USB2.0 Host 接Camera:
[ 5069.124541] usb 1-1: new high-speed USB device number 3 using ehci-platform
[ 5069.269274] usb 1-1: New USB device found, idVendor=0bda, idProduct=0230
[ 5069.269398] usb 1-1: New USB device strings: Mfr=3, Product=1, SerialNumber=2
[ 5069.269429] usb 1-1: Product: ICT567-HDR
[ 5069.269454] usb 1-1: Manufacturer: ICT HDR Commen
[ 5069.269479] usb 1-1: SerialNumber: 200901010001
[ 5069.277970] uvcvideo: Found UVC 1.00 device ICT567-HDR (0bda:0230)
[ 5069.286357] input: ICT567-HDR as /devices/platform/fe3c0000.usb/usb1/1-1/1-1:1.0/input/input4USB2.0 Host 断开Camera:
[ 5106.751336] usb 1-1: USB disconnect, device number 3USB2.0 Host Full/Low Speed设备
手里没有对应外设，以后应该也不会使用到了。