PLL35XX_MDIV_MASK
mdiv = (pll_con >> PLL35XX_MDIV_SHIFT) & PLL35XX_MDIV_MASK;
old_mdiv = (pll_con >> PLL35XX_MDIV_SHIFT) & PLL35XX_MDIV_MASK;
tmp &= ~((PLL35XX_MDIV_MASK << PLL35XX_MDIV_SHIFT) |