PLL_FBDIV_MASK
FIELD_GET(PLL_FBDIV_MASK, value),
FIELD_PREP(PLL_FBDIV_MASK, best_fbdiv) |
FIELD_GET(PLL_FBDIV_MASK, value),
FIELD_GET(PLL_FBDIV_MASK, value));
(PLL_FBDIV_MASK | PLL_REFDIV_MASK | \
reg &= ~(PLL_REFDIV_MASK | PLL_FBDIV_MASK | PLL_SEL_LPFR_MASK);