CCM_FRAC_PLL_INT_DIV_CTL_SHIFT
reg &= ~(CCM_FRAC_PLL_INT_DIV_CTL_MASK << CCM_FRAC_PLL_INT_DIV_CTL_SHIFT);
reg |= (divfi - 1) << CCM_FRAC_PLL_INT_DIV_CTL_SHIFT;