CPG_PLLnCR_STC_MASK
mult = FIELD_GET(CPG_PLLnCR_STC_MASK, readl(pll_clk->pllcr_reg)) + 1;
val &= ~CPG_PLLnCR_STC_MASK;
val |= FIELD_PREP(CPG_PLLnCR_STC_MASK, mult - 1);