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- root@nitrogen:~# cd /sys/class/gpio
- root@nitrogen:/sys/class/gpio# echo 86 > export
- root@nitrogen:/sys/class/gpio# cd gpio86
- root@nitrogen:/sys/class/gpio/gpio86# echo out > direction
- root@nitrogen:/sys/class/gpio/gpio86# echo 1 > value
- root@nitrogen:/sys/class/gpio/gpio86# dmesg | grep usb
- [ 0.300604] usbcore: registered new interface driver usbfs
- [ 0.300688] usbcore: registered new interface driver hub
- [ 0.300805] usbcore: registered new device driver usb
- [ 0.301052] 2000000.aips-bus:usbphy_nop1 supply vcc not found, using dummy regulator
- [ 0.301219] 2000000.aips-bus:usbphy_nop2 supply vcc not found, using dummy regulator
- [ 0.867309] usbcore: registered new interface driver cdc_acm
- [ 0.867421] usbcore: registered new interface driver usb-storage
- [ 0.867594] usbcore: registered new interface driver usbserial
- [ 0.867648] usbcore: registered new interface driver usbserial_generic
- [ 0.867702] usbserial: USB Serial support registered for generic
- [ 0.867777] usbcore: registered new interface driver cp210x
- [ 0.867829] usbserial: USB Serial support registered for cp210x
- [ 0.867893] usbcore: registered new interface driver ftdi_sio
- [ 0.867945] usbserial: USB Serial support registered for FTDI USB Serial Device
- [ 0.868007] usbcore: registered new interface driver keyspan
- [ 0.868059] usbserial: USB Serial support registered for Keyspan - (without firmware)
- [ 0.868111] usbserial: USB Serial support registered for Keyspan 1 port adapter
- [ 0.868171] usbserial: USB Serial support registered for Keyspan 2 port adapter
- [ 0.868229] usbserial: USB Serial support registered for Keyspan 4 port adapter
- [ 0.868296] usbcore: registered new interface driver pl2303
- [ 0.868348] usbserial: USB Serial support registered for pl2303
- [ 0.868410] usbcore: registered new interface driver qcserial
- [ 0.868463] usbserial: USB Serial support registered for Qualcomm USB modem
- [ 0.870363] 2184800.usbmisc supply vbus-wakeup not found, using dummy regulator
- [ 0.871508] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 0.894457] 2184200.usb supply vbus not found, using dummy regulator
- [ 1.234311] usb 1-1: new high-speed USB device number 2 using ci_hdrc
- [ 1.366401] usbcore: registered new interface driver usbhid
- [ 1.366408] usbhid: USB HID core driver
- [ 1.773620] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 1.781529] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 5.513461] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 5.997335] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 6.393936] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 6.434916] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 6.495090] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 6.715995] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 7.002001] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 7.185814] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- [ 7.258463] imx_usb 2184000.usb: Can't register ci_hdrc platform device, err=-517
- root@nitrogen:/sys/class/gpio/gpio86# lsusb
- Bus 001 Device 002: ID 0424:2513 Standard Microsystems Corp. 2.0 Hub
- Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
- root@nitrogen:/sys/class/gpio/gpio86#
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