VDECCLK_GATE_D
intel_uncore_rmw_fw(uncore, VDECCLK_GATE_D, 0, VCP_UNIT_CLOCK_GATE_DISABLE);
intel_uncore_posting_read_fw(uncore, VDECCLK_GATE_D);
intel_uncore_rmw_fw(uncore, VDECCLK_GATE_D, VCP_UNIT_CLOCK_GATE_DISABLE, 0);
intel_uncore_posting_read_fw(uncore, VDECCLK_GATE_D);