PLL0831X_MDIV_SHIFT
mdiv = (pll_con3 >> PLL0831X_MDIV_SHIFT) & PLL0831X_MDIV_MASK;
pll_con3 &= ~((PLL0831X_MDIV_MASK << PLL0831X_MDIV_SHIFT) |
pll_con3 |= (rate->mdiv << PLL0831X_MDIV_SHIFT) |