MG_PLL_TDC_COLDST_BIAS
intel_de_read(display, MG_PLL_TDC_COLDST_BIAS(tc_port));
intel_de_rmw(display, MG_PLL_TDC_COLDST_BIAS(tc_port),
intel_de_posting_read(display, MG_PLL_TDC_COLDST_BIAS(tc_port));