diff options
| -rw-r--r-- | src/soc/intel/common/block/acpi/acpi/pep.asl | 20 |
1 files changed, 19 insertions, 1 deletions
diff --git a/src/soc/intel/common/block/acpi/acpi/pep.asl b/src/soc/intel/common/block/acpi/acpi/pep.asl index 64d23c1061..9e39a8fedd 100644 --- a/src/soc/intel/common/block/acpi/acpi/pep.asl +++ b/src/soc/intel/common/block/acpi/acpi/pep.asl @@ -30,9 +30,27 @@ Device(PEPD) } /* * Function 1 - Get Device Constraints + * + * Device constraints for low power states (may be used for debugging). + * For now there is only one disabled dummy device, because Windows + * expects at least one device and crashes without it with a bluescreen + * (`INTERNAL_POWER_ERROR`). Returning an empty package does not work. */ If(Arg2 == PEPD_DSM_LPI_GET_DEVICE_CONSTRAINTS) { - Return(Package(5) {0, Ones, Ones, Ones, Ones}) + Return (Package() { + Package() { + "\\DUMY", /* \DUMY - not existent */ + 0, /* disabled, no constraints */ + Package() { + 0, /* revision */ + Package() { + 0xff, /* apply to all LPIT states */ + 0 /* minimum D-state */ + } + } + } + } + ) } /* * Function 2 - Get Crash Dump Device |