DEFAULT_RATE
error = clk_set_freq(sc->mclk, DEFAULT_RATE, 0);
val = typematic(DEFAULT_DELAY, DEFAULT_RATE);
sc->csr1.rate = flags.fixed_rate ? flags.rate : DEFAULT_RATE;
sc->csr1.rate = flags.fixed_rate ? flags.rate : DEFAULT_RATE;
printf("\t-r Sample rate (default: %d)\n", DEFAULT_RATE);
uint64_t rate = DEFAULT_RATE;