SNPS_PHY_MPLLB_DIV
intel_de_write(display, SNPS_PHY_MPLLB_DIV(phy), pll_state->mpllb_div);
intel_de_write(display, SNPS_PHY_MPLLB_DIV(phy),
intel_de_rmw(display, SNPS_PHY_MPLLB_DIV(phy), SNPS_PHY_MPLLB_FORCE_EN, 0);
pll_state->mpllb_div = intel_de_read(display, SNPS_PHY_MPLLB_DIV(phy));