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I tried to connect a USB flash drive to the internal usb.
But nothing happened.
Some errors:
Spoiler:
[root@kindle root]# lsusb
lsusb: /sys/bus/usb/devices: No such file or directory
[root@kindle root]# modprobe ehci-hcd
[root@kindle root]# lsusb
Bus 001 Device 001: ID 1d6b:0002
[root@kindle root]# dmesg | grep -i usb
regulator: VUSB2: 2400 <--> 2775 mV
regulator: VUSB: 0 mV
kernel: I perf:usb:usb_gadget_loaded=4.35 seconds:
usbcore: registered new interface driver usbfs
usbcore: registered new interface driver hub
usbcore: registered new device driver usb
ehci_hcd: USB 2.0 'Enhanced' Host Controller (EHCI) Driver
fsl-ehci fsl-ehci.1: new USB bus registered, assigned bus number 1
fsl-ehci fsl-ehci.1: USB 2.0 started, EHCI 1.00
usb usb1: configuration #1 chosen from 1 choice
hub 1-0:1.0: USB hub found
usb usb1: USB disconnect, address 1
fsl-ehci fsl-ehci.1: USB bus 1 deregistered
usbcore: deregistering device driver usb
usbcore: deregistering interface driver usbfs
usbcore: deregistering interface driver hub
usb 1-1: device not accepting address 12, error -71
usb 1-1: new full speed USB device using fsl-ehci and address 13
usb 1-1: device not accepting address 13, error -71
hub 1-0:1.0: unable to enumerate USB device on port 1
USB Host suspended
USB Host resumed
usb 1-1: new full speed USB device using fsl-ehci and address 14
usb 1-1: device descriptor read/64, error -71
usb 1-1: device descriptor read/64, error -71
usb 1-1: new full speed USB device using fsl-ehci and address 15
usb 1-1: device descriptor read/64, error -71
usb 1-1: device descriptor read/64, error -71
usb 1-1: new full speed USB device using fsl-ehci and address 16
usb 1-1: device not accepting address 16, error -71
usb 1-1: new full speed USB device using fsl-ehci and address 17
usb 1-1: device not accepting address 17, error -71
hub 1-0:1.0: unable to enumerate USB device on port 1