SIBA_CC_CLKSYSCTL
SIBA_CC_WRITE32(scc, SIBA_CC_CLKSYSCTL,
(SIBA_CC_READ32(scc, SIBA_CC_CLKSYSCTL) &
div = ((SIBA_CC_READ32(scc, SIBA_CC_CLKSYSCTL) >> 16) + 1) * 4;