ulpi_read
(ulpi_read(sc, ULPI_VENDOR_ID_LOW) |
ulpi_read(sc, ULPI_VENDOR_ID_HIGH) << 8),
(ulpi_read(sc, ULPI_PRODUCT_ID_LOW) |
ulpi_read(sc, ULPI_PRODUCT_ID_HIGH) << 8));
data = ulpi_read(sc, ULPI_FUNCTION_CONTROL);
static uint8_t ulpi_read(struct zynqehci_softc *sc, int addr);