Power & Source of Big Ideas

NanoPi Duo USB OTG support

Moderators: chensy, FATechsupport

Hi.
I'm trying to connect my flash drive to the board. I've plugged in the board into the external power source (via pins Vin and Gnd). Then I've connected my flash drive using USB OTG cable. But nothing is happened. Flash drive doesn't appear in Ubuntu. But it seems that host driver was loaded successfully. Below is the dump of the dmesg command.

Code: Select all

[    3.309475] usb_phy_generic usb_phy_generic.3.auto: usb_phy_generic.3.auto supply vcc not found, using dummy regulator
[    3.320919] musb-hdrc musb-hdrc.4.auto: MUSB HDRC host driver
[    3.326731] musb-hdrc musb-hdrc.4.auto: new USB bus registered, assigned bus number 9
[    3.334953] usb usb9: New USB device found, idVendor=1d6b, idProduct=0002
[    3.341775] usb usb9: New USB device strings: Mfr=3, Product=2, SerialNumber=1
[    3.349024] usb usb9: Product: MUSB HDRC host driver
[    3.354023] usb usb9: Manufacturer: Linux 4.14.0 musb-hcd
[    3.359454] usb usb9: SerialNumber: musb-hdrc.4.auto
[    3.646520] usb0-vbus: disabling


Thanks.
Problem is detected. My board has a version 1.0. Due to this post viewtopic.php?f=58&t=947&p=3174&hilit=otg+power such version doesn't support OTG functionality.

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