The register sets that affect the USB controller include:
- USB_CSR register set
- USB_XHCI register set
- System-level registers
- CRL (reference clocks and resets)
- CRP
- LPD_IOP_SLCR (system-level controls; AXI transaction attributes and routing)
- LPD_IOP_SECURE_SLCR
- LPD_IOP_SLCR
- Miscellaneous system interrupt, QoS registers
- USB_XHCI registers