USB Host not working

Discussion in 'UDOO NEO' started by Kurt Kennett, Jan 6, 2016.

  1. Kurt Kennett

    Kurt Kennett New Member

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    I plug things into my USB host port on my NEO Full, but no power goes to the devices.

    UBOOT doesn't work with USB Host.
    I plug in stuff when Udoobuntu is running and do usb-devices and it sees the host but nothing else.

    Anyone else can post the output from their "usb-devices" in udoobuntu?
    or show output of uboot being able to see a mass storage device connected to the host?
     
  2. Kurt Kennett

    Kurt Kennett New Member

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    Nevermind. Apparenly my first board is broken/burnt out somehow. My second board seems to work.

    However, OTG2 will not work in Uboot because nobody turns on VBUS in UBOOT for OTG2, which is (for some reason) a normal GPIO.
     
  3. Francesco

    Francesco Active Member

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    USB ports are not initialized by u-boot, but later by the kernel. Do you need to access USB ports in u-boot?
    When Linux starts, both USB ports are initialized. Do you have issues?
     
  4. Kurt Kennett

    Kurt Kennett New Member

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    uboot has usb. just do "usb start" at uboot prompt.
    however, the only reason it does not work as far as i can tell is because the VBUS is never turned on (set GPIO6-12 or something like that). Other than that it should work. I believe the OTG port (micro USB) works as a host.

    board works fine once linux boots. just uboot does not work.
     

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