31:0

0h

RO/V

Controller SPD RTD3 Request Acknowledge [19:0] (MSPDRTRACK)

This field represents the acknowledge for ASL code trigger request for ModPHY SPD gating. PMC sets a bit in this field to 1 to acknowledge that it has registered the corresponding MSPDRTREQ. Note that the action of setting this bit to 1 is immediate no other gating conditions are involved in this.
Actual SPD shutdown may happen later once other power gating conditions have been satisfied as well.
PMC clears a bit to 0 in this field once the corresponding MSPTDRTREQ is cleared by the ASL code and SPD state has been fully restored.
Bit 0: Corresponds to PCIe Controller A, Function 0
Bit 1: Corresponds to PCIe Controller A, Function 1
Bit 2: Corresponds to PCIe Controller A, Function 2
Bit 3: Corresponds to PCIe Controller A, Function 3
Bit 4: Corresponds to PCIe Controller B, Function 0
Bit 5: Corresponds to PCIe Controller B, Function 1
Bit 6: Corresponds to PCIe Controller B, Function 2
Bit 7: Corresponds to PCIe Controller B, Function 3
Bit 8: Corresponds to PCIe Controller C, Function 0
Bit 9: Corresponds to PCIe Controller C, Function 1
Bit 10: Corresponds to PCIe Controller C, Function 2
Bit 11: Corresponds to PCIe Controller C, Function 3
Bit 12: Corresponds to SATA Controller
Bit 13: Corresponds to Gbe Controller
Bit 14: Corresponds to xHCI Controller
Bit 15: Corresponds to xDCI Controller
Bit 16: Corresponds to UFS Controller 1
Bit 17: Corresponds to PCIe Controller D, Function 0
Bit 18: Corresponds to PCIe Controller D, Function 1
Bit 19: Corresponds to PCIe Controller D, Function 2
Bit 20: Corresponds to PCIe Controller D, Function 3
Bit 21: Corresponds to PCIe Controller E, Function 0
Bit 22: Corresponds to PCIe Controller E, Function 1
Bit 23: Corresponds to PCIe Controller E, Function 2
Bit 24: Corresponds to PCIe Controller E, Function 3
Bit 25: Corresponds to DMI Controller
Bit 26: Corresponds to UFS Controller 2
Bit 27: Corresponds to PCIe Controller F, Function 0
Bit 28: Corresponds to PCIe Controller F, Function 1
Bit 29: Corresponds to PCIe Controller F, Function 2
Bit 30: Corresponds to PCIe Controller F, Function 3
Bit 31: Reserved