BHND_PMU_XTALFREQ
BHND_PMU_WRITE_4(sc, BHND_PMU_XTALFREQ, 1U <<
ilp_ctr = BHND_PMU_READ_4(sc, BHND_PMU_XTALFREQ);
BHND_PMU_WRITE_4(sc, BHND_PMU_XTALFREQ, 0);