QSPI_WLEN
cmd |= QSPI_WLEN(QSPI_WLEN_MAX_BITS);
cmd |= QSPI_WLEN(wlen);
cmd |= QSPI_WLEN(rx_wlen);
QSPI_WLEN(t->bits_per_word));
#define QSPI_WLEN_MASK QSPI_WLEN(QSPI_WLEN_MAX_BITS)