PLL_SYS_FBDIV_INT
fbdiv_int = HREAD4(sc, base + PLL_SYS_FBDIV_INT - PLL_SYS_CS);
HWRITE4(sc, base + PLL_SYS_FBDIV_INT - PLL_SYS_CS, 0);
HCLR4(sc, base + PLL_SYS_FBDIV_INT - PLL_SYS_PWR,
HSET4(sc, base + PLL_SYS_FBDIV_INT - PLL_SYS_PWR,
HWRITE4(sc, base + PLL_SYS_FBDIV_INT - PLL_SYS_CS, fbdiv_int);