It is not possible to read or write the ULPI PHY extended register set (addresses 0x40 and greater) using the ULPI viewport. The write operation writes the address itself as data, and a read operation returns incorrect data.
Minor. A controller lock-up is not expected. The PHY registers that are affected and cannot be read through the ULPI Viewport are only the Reserved (0x40 to 0x7F) and Vendor-specific (0x80 to 0xFF) registers.
There is no work-around at this time.
Systems that use the USB controller.
|Device Revision(s) Affected:||All, no plan to fix. Refer to (Xilinx Answer 47916) - Zynq-7000 Design Advisory Master Answer Record.|