[OpenCore] Using SSDT-GPIO instead of SSDT-XOSI

[Markus Bichl]

Hello,

As SSDT-XOSI makes it unable to Boot into Windows from OpenCore,
I needed to disable:
ACPI->Add:
SSDT-XOSI
ACPI->Patch:
change OSID to XSID (to avoid match against _OSI XOSI patch)
change _OSI to XOSI, pair with SSDT-XOSI.aml

This breaks the Touchpad functionality. Therefore I wanted to install
SSDT-GPIO.aml

using the following code(SSDT-GPIO.dsl):
`DefinitionBlock ("", "SSDT", 2, "ACDT", "GPI0", 0x00000000)
{
External (GPEN, FieldUnitObj)
External (SBRG, FieldUnitObj)

Scope (\)
{
    If (_OSI ("Darwin"))
    {
        GPEN = One
        SBRG = One
    }
}

}`

But the touchpad is not working.

This is my log, filtered on "voodoo":
2020-05-25 13:38:10.847771+0200 localhost kernel[0]: (kernel) VoodooGPIOSunrisePointLP::Loading GPIO Data for SunrisePoint-LP
2020-05-25 13:38:10.878036+0200 localhost kernel[0]: (kernel) VoodooGPIOSunrisePointLP::VoodooGPIO Init!
2020-05-25 13:38:10.878039+0200 localhost kernel[0]: (kernel) VoodooGPIOSunrisePointLP::VoodooGPIO Initializing Community 0
2020-05-25 13:38:10.878076+0200 localhost kernel[0]: (kernel) VoodooGPIOSunrisePointLP::VoodooGPIO Initializing Community 1
2020-05-25 13:38:10.878090+0200 localhost kernel[0]: (kernel) VoodooGPIOSunrisePointLP::VoodooGPIO Initializing Community 2
2020-05-25 13:38:10.878221+0200 localhost kernel[0]: (kernel) VoodooGPIOSunrisePointLP::GPIO Controller is already awake! Not reinitializing.
2020-05-25 13:38:10.950763+0200 localhost kernel[0]: (kernel) VoodooI2CPCIController::pci8086,9d60 Starting I2C controller
2020-05-25 13:38:10.951289+0200 localhost kernel[0]: (kernel) VoodooI2CPCIController::pci8086,9d61 Starting I2C controller
2020-05-25 13:38:10.952961+0200 localhost kernel[0]: (kernel) VoodooI2CPCIController::pci8086,9d61 Set PCI power state D0
2020-05-25 13:38:10.952962+0200 localhost kernel[0]: (kernel) VoodooI2CPCIController::pci8086,9d60 Set PCI power state D0
2020-05-25 13:38:10.953180+0200 localhost kernel[0]: (kernel) VoodooI2CPCIController::pci8086,9d60 Publishing nub
2020-05-25 13:38:10.953463+0200 localhost kernel[0]: (kernel) VoodooI2CPCIController::pci8086,9d61 Publishing nub
2020-05-25 13:38:11.227324+0200 localhost kernel[0]: (kernel) VoodooI2CControllerDriver::pci8086,9d60 Probing controller
2020-05-25 13:38:11.227734+0200 localhost kernel[0]: (kernel) VoodooI2CControllerDriver::pci8086,9d61 Probing controller
2020-05-25 13:38:11.227758+0200 localhost kernel[0]: (kernel) VoodooI2CControllerDriver::pci8086,9d61 Found valid Synopsys component, continuing with initialisation
2020-05-25 13:38:11.228364+0200 localhost kernel[0]: (kernel) VoodooI2CControllerNub::pci8086,9d61 SSCN not implemented in ACPI tables
2020-05-25 13:38:11.228404+0200 localhost kernel[0]: (kernel) VoodooI2CControllerNub::pci8086,9d61 FMCN not implemented in ACPI tables
2020-05-25 13:38:11.228579+0200 localhost kernel[0]: (kernel) VoodooI2CControllerDriver::pci8086,9d61 Warning: Error getting bus config, using defaults where necessary
2020-05-25 13:38:11.228859+0200 localhost kernel[0]: (kernel) VoodooI2CControllerDriver::pci8086,9d61 Publishing device nubs
2020-05-25 13:38:11.286474+0200 localhost kernel[0]: (kernel) VoodooI2CControllerDriver::pci8086,9d60 Found valid Synopsys component, continuing with initialisation
2020-05-25 13:38:11.325851+0200 localhost kernel[0]: (kernel) VoodooI2CControllerNub::pci8086,9d60 SSCN not implemented in ACPI tables
2020-05-25 13:38:11.327482+0200 localhost kernel[0]: (kernel) VoodooI2CControllerNub::pci8086,9d60 FMCN not implemented in ACPI tables
2020-05-25 13:38:11.354812+0200 localhost kernel[0]: (kernel) VoodooI2CControllerDriver::pci8086,9d60 Warning: Error getting bus config, using defaults where necessary
2020-05-25 13:38:11.356852+0200 localhost kernel[0]: (kernel) VoodooI2CControllerDriver::pci8086,9d60 Publishing device nubs

[Weimin Liu]

Your gpio hotpatch should work, I've used exactly the same patch. BUT, even if you get it to work, the gpio method cause huge latency to the trackpad gesture. So I suggest you take a look at this hopatch , or just boot Windows via bios.