Also tested on an OrangePi R2S (K1, 2 GiB, boots from eMMC), with the same tree as the RV2 runs (upstream next plus these series and board support that is not posted yet):
- the combo PHY is calibrated at probe and switched to USB 3, the PLL
locks and the xHCI starts ("Bus usb@c0a00000: 1 USB Device(s) found");
- nothing was plugged into the port, so no SuperSpeed device was
enumerated on this board (the RV2 enumerated one at 5 Gb/s);
- the PCIe PHYs are not used by U-Boot on this board.
