On Thu, 16 Jun 2022, Anshuman Gupta wrote:
> DGFX cards support both Add in Card(AIC) and Mother Board Down(MBD)
> configs. MBD config requires HOST BIOS GPIO toggling support
> in order to enable/disable VRAM SR using ACPI OpRegion.
>
> i915 requires to check OpRegion PCON MBD Config bits to
>
DGFX cards support both Add in Card(AIC) and Mother Board Down(MBD)
configs. MBD config requires HOST BIOS GPIO toggling support
in order to enable/disable VRAM SR using ACPI OpRegion.
i915 requires to check OpRegion PCON MBD Config bits to
discover whether Gfx Card is MBD config before enabling
