PLL35XX_PDIV_SHIFT
pdiv = (pll_con >> PLL35XX_PDIV_SHIFT) & PLL35XX_PDIV_MASK;
old_pdiv = (pll_con >> PLL35XX_PDIV_SHIFT) & PLL35XX_PDIV_MASK;
(PLL35XX_PDIV_MASK << PLL35XX_PDIV_SHIFT) |
(rate->pdiv << PLL35XX_PDIV_SHIFT) |