PCH_PP_STATUS
vgpu_vreg_t(vgpu, PCH_PP_STATUS) |= PP_ON;
vgpu_vreg_t(vgpu, PCH_PP_STATUS) |= PP_SEQUENCE_STATE_ON_IDLE;
vgpu_vreg_t(vgpu, PCH_PP_STATUS) &= ~PP_SEQUENCE_POWER_DOWN;
vgpu_vreg_t(vgpu, PCH_PP_STATUS) &= ~PP_CYCLE_DELAY_ACTIVE;
vgpu_vreg_t(vgpu, PCH_PP_STATUS) &=
MMIO_D(PCH_PP_STATUS);