SNPS_PHY_MPLLB_FRACN1
intel_de_write(display, SNPS_PHY_MPLLB_FRACN1(phy), pll_state->mpllb_fracn1);
pll_state->mpllb_fracn1 = intel_de_read(display, SNPS_PHY_MPLLB_FRACN1(phy));