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USB OTG port not working as mass storage gadget

HP C R
Intellectual 425 points
Other Parts Discussed in Thread: AM3715, TPS65950

Hi All,

We have a custom board with AM3715 based SoM from Jorjin which is very similar to beagleboard - xm. The SoM has a TPS65950 which provides USB OTG.

We have a ferret board  (ref board) and we are able to use the board as mass storage gadget using g_mass_storage.ko and specifying the file=/dev/mmcblk0p2

However, we are not able to get the same working on our custom board. dmesg does not show any message when cable is connected to PC.

The VBUS on TPS65950 is not connected to OTG connector. The hardware is currently designed only to drive VBUS to the cable from custom board. Can this cause the behavior we see now?

Regards,

Hari