USB has no power

Started by Noone, May 11, 2020, 10:06:38 AM

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I've got 4pcs A64-OLinuXino-1G boards (rev.D). All the boards are missing power to the USB-port. Data signals are good and everything is working if I'm using powered USB-hub. OTG-port is working normally.

Voltage regulator (U9, SY6280AAC) for the port needs enable signal (USB1-DRV in the schematic) to the pin 4 to turn on. This signal stays low and regulator stays off.

Enable signal for the OTG-port regulator is high as expected.

Is this software or hardware problem? And how to fix it?

Image used is


The latest release of A64 images are not yet stable. In order to rule out software problem can you also test with these two older images:

Let me know how it goes.

Technical support and documentation manager at Olimex


Thank you for the update, I've notified the developers in order to resolve it in the Olimage image.
Technical support and documentation manager at Olimex