PLL1031X_KDIV_SHIFT
old_kdiv = (pll_con3 >> PLL1031X_KDIV_SHIFT) & PLL1031X_KDIV_MASK;
con3 &= ~((PLL1031X_KDIV_MASK << PLL1031X_KDIV_SHIFT) |
con3 |= (rate->kdiv << PLL1031X_KDIV_SHIFT) |