BCM_BSC_DELAY
reg = BCM_BSC_READ(sc, BCM_BSC_DELAY);
bcm_bsc_modifyreg(sc, BCM_BSC_DELAY, 0xffff0000, reg << 16);
reg = BCM_BSC_READ(sc, BCM_BSC_DELAY);
bcm_bsc_modifyreg(sc, BCM_BSC_DELAY, 0xffff, reg);