2010-01-19 02:02:02     u-boot and BF527 USB OTG problem

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2010-01-19 02:02:02     u-boot and BF527 USB OTG problem

Anoop sasi (INDIA)

Message: 84728   


Hi all,


Am using BF527 as my dovelopment kit and i have used u-boot-2008.10-2009R1-rc3 as my boot loader . BF527 has only one USB OTG support but I need to connect Multiple USB devices(USB Keyboard, mouse and MSD) at a time, as a solution i tried using USB 2.0 4 port hub. Then i tried to detect the usb device using usb start command it detected the usb device but could not detect it as a mass storage device. what might be the problem. plaese help me.


Boot loader configurations made for USB  upport



* USB Setting


#if !defined(__ADSPBF522__) && !defined(__ADSPBF523__)

#define CONFIG_USB




#define CONFIG_MUSB_TIMEOUT 100000




This is the error log


bfin> usb start

(Re)start USB...

USB:   scanning bus for devices...

      USB device not accepting new address (error=2)

3 USB Device(s) found

       scanning bus for storage devices... 0 Storage Device(s) found



bfin> usb tree


Device Tree:

  1  Hub (12MBit/s, 0mA)

  |   MUSB Root Hub


  +-2  Hub (480MBit/s, 100mA)


    +-3  See Interface (480MBit/s, 0mA)






2010-01-19 02:06:06     Re: u-boot and BF527 USB OTG problem

Mike Frysinger (UNITED STATES)

Message: 84729   


your colleague has already posted this question and been given the answer: