CS42L43_SPI_ROOT_HZ
if (CS42L43_SPI_ROOT_HZ / cs42l43_clock_divs[i] <= tfr->speed_hz)
priv->ctlr->min_speed_hz = CS42L43_SPI_ROOT_HZ /
priv->ctlr->max_speed_hz = CS42L43_SPI_ROOT_HZ / cs42l43_clock_divs[0];