The customer need to use TI Level Translator LSF0102YZTR to convert the MDIO/MDC level from 1.8V to 3.3V.
For the reference circuit of the Datasheet, MDIO connects to LSF0102YZTR port A1/MDC to port A2.
Can the ports connected to MDIO/MDC be swapped? Change to MDIO to connect to port A2/MDC to port A1? Could you help to review the schematic ?