Where to connect the USB controller. Should be to_phy by default.
| TO_PHY | |
| TO_EXTPHY | |
| TO_DIGITAL_PAD | |
| SOFTCON | |
| USBPHY_AS_GPIO | Use the usb DP and DM pins as GPIO pins instead of connecting them to the USB controller. |
| SWAP_DPDM | Swap the USB PHY DP and DM pins and all related controls and flip receive differential data. Can be used to switch USB DP/DP on the PCB. This is done at a low level so overrides all other controls. |