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Last Post 31 Mar 2008 07:14 AM by  sanjeevgt@gmail.com
arcotg_udc.ko hangs while loading..
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sanjeevgt@gmail.com
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24 Mar 2008 10:26 AM
    I have a SOM board with MCIMX31CVKN5C (Core 2)(commercial industrial grade) and i am running linux 2.6.19.2 on that. With this SOM board I have a problem while loading arcotg_udc.ko module.

    This module hangs and after debugging further I found that it hangs at cpu_to_le32() function.

    I was able to load the same arcotg_udc.ko module successfully on SOM board with MCIMX31VKNB (core 1.2).

    I haven't gone in depth to understand the difference in Core1.2 and core 2. It looks like the difference is only for temperature range.

    I would like to know if otg driver did work fine with MCIMX31CVKN5C (Core 2) on any other platform like winCE.

    Regards

    Sanjeev
    richard.laborde@logicpd.com
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    24 Mar 2008 10:43 AM
    Sanjeev -

    Have you updated your LoLo to 2.4.0 on the new SOM?

    If you have a new MIMXCSOMXR, the problem is that LoLo 2.3.X doesn’t set up the GPR register correctly for the changes that were made to the new boards. The board change was to the USB interface. There will be a PCN released soon to address the new board revisions.

    The GPR issue is fixed in LoLo 2.4.0. The workaround for older LoLo versions is:

    w /w 0x43FAC008 0x00000000

    I recommend the LoLo upgrade.
    Thanks
    sanjeevgt@gmail.com
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    31 Mar 2008 07:14 AM
    I have also tried on lolo 2.4.0, still the arcotg_udc.ko hangs...
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