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Subject: BBB Problem: No USB host at boot
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Building for the Beaglebone Black, using 
meta-arago:dora/meta-ti:dora/linux-ti-staging_3.12

I boot with a mouse inserted in the USB host connector.   It is not 
detected.

$ lsusb gives an empty result

$ lsmod does not show anything but graphics

I need to start the USB host manually, for things to be working.

$ modprobe musb_am335x

Then the mouse is detected and lsusb gives the desired output

root@beaglebone:/# lsusb
Bus 002 Device 002: ID 413c:3016 Dell Computer Corp. Optical 5-Button 
Wheel Mouse
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub


BR
Ulf Samuelsson