Fixing Embedded Controller (SSDT-EC/USBX)

• Fixing Embedded Controller (SSDT-EC/USBX)
  • What this SSDT does
  • Methods to make this SSDT

What this SSDT does

The purpose of SSDT-EC/USBX is a couple things:

• On desktops, the EC(or better known as the embedded controller) isn't compatible with AppleACPIEC driver, to get around this we disable this device when running macOS
• AppleBusPowerController will look for a device named EC, so we will want to create a fake device for this kext to load onto
  • AppleBusPowerController also requires a USBX device to supply USB power properties for Skylake and newer, so we will bundle this device in with the EC fix
• On laptops, the EC is used for hotkeys and battery so disabling this isn't all too ideal. Problem is our EC's name isn't compatible, so we will create a simple "fake" EC device that will satisfy Apple

So TL;DR:

• EC is embedded controller
• Desktops will want real EC off, and a fake EC created
• Laptops will just want an additional fake EC present
• Skylake and newer devices will want USBX as well

Methods to make this SSDT

For the EC fix, there are 3 methods you can choose from:

• Prebuilt
• SSDTTime
• Manual