bcm_cm_clock
bcm_cm_set(enum bcm_cm_clock clk, uint32_t ctl, uint32_t div)
bcm_cm_get(enum bcm_cm_clock clk, uint32_t *ctlp, uint32_t *divp)
int bcm_cm_set(enum bcm_cm_clock, uint32_t, uint32_t);
int bcm_cm_get(enum bcm_cm_clock, uint32_t *, uint32_t *);