Linux Embedded OTG gadgets conflict(?) with QDB



  • Hello,

    I'm working on a custom board based on iMX6 Sabresd board.

    I have the following problem:

    When I use generic Yocto images like "fsl-image-multimedia-full" I can load USB modules such as g_mass_storage in order to connect my board to a Windows PC and see my SD card content.
    When I use "b2qt-embedded-qt5-image" and try to execute:
    #modprobe g_mass_storage file=/dev/mmcblk1
    I get the following output:
    udc-core: couldn't find an available UDC - added [g_mass_storage] to list of pending drivers

    Being that I'm using the same kernel and device tree the problem must be some difference in the Root File System.

    In particular I think that this problem is related to the fact that in "b2qt-embedded-qt5-image" other USB OTG devices are presented when connecting to a PC: "QDB interface" and "remote NDIS". I know they are useful to debug applications on the target, but could you help me to load my g_mass_storage, with or without them, when I need it?

    Kind Regards,
    Roberto


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