Actual meaning depends on the BIOS/EFI vendor. Inside the ACPI tables (disassembled with iasl -d dsdt.dat ), you might see:
Name (_HID, "TPSACPI01") Name (_UID, 0x01) Name (_CRS, ResourceTemplate () Memory32Fixed (ReadWrite, 0xFED40000, 0x1000) Interrupt (ResourceConsumer, Level, ActiveHigh, Shared) 0x55 ) Method (_STA, 0, NotSerialized) Return (0x0F) // Device present, enabled, shown in UI // Custom methods Method (PSTS, 1, Serialized) ... // Power status Method (PWON, 0, Serialized) ... // Power on acpi tpsacpi01
| Likely role | Details | |-------------|---------| | | TPS might stand for "Trusted Platform System" – seen in some Intel reference boards. | | Platform Controller Hub (PCH) private device | Used for power sequencing, wake sources, or GPIO events not covered by standard ACPI. | | Embedded Controller (EC) interface | Some vendors (e.g., Kontron, Advantech) use custom HIDs for EC control. | | Intel SoC power management | On Bay Trail, Cherry Trail, Apollo Lake – TPSACPI01 can be a wrapper for PMIC (Power Management IC) controls. | Actual meaning depends on the BIOS/EFI vendor
ls /sys/bus/acpi/devices/TPSACPI01:00/ grep -r tpsacpi01 /sys/firmware/acpi/tables/ TPSACPI01 is a platform-specific ACPI device , often: // Power on | Likely role | Details
Device (TPS1)