# Resolve common USB configuration questions

The following FAQ addresses common USB configuration scenarios.

How do you enable the USB controller in Device mode?

1. Enable the eUSB2 PHY, USB3 PHY, and USB controller nodes in
`root/arch/arm64/boot/dts/qcom/glymur.dtsi`.
2. Set the `dr_mode` property in the USB controller node to
`peripheral`.

For the complete node configuration, see
[Enable a USB controller in Device mode](https://docs.qualcomm.com/doc/80-A0399-8/topic/enable-usb-controller-device-mode.html).

## Related

- [Configure the peripheral interfaces](https://docs.qualcomm.com/doc/80-A0399-8/topic/configure-peripheral-interfaces.html)
- [Debug the USB interface](https://docs.qualcomm.com/doc/80-A0399-8/topic/debug-usb.html)
- [References](https://docs.qualcomm.com/doc/80-A0399-8/topic/references.html)

Last Published: Sep 17, 2026

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References](https://docs.qualcomm.com/bundle/publicresource/80-A0399-8/topics/references.md)