...
Suspend State | Wake Up event | Status | Notes |
|---|---|---|---|
S2Idle | Lid | OK | |
S2Idle | RTC Alarm | OK | Linux kernel uses few ACPI GPE functions to determine if the device can wake up. They return wrong values for Arm64 implementation and had to be disabled during the testing. |
S1 | Lid | OK | |
S1 | RTC Alarm | OK | |
S3 | TF-A hack to wake up immediately after suspend | OK | This works only with single processor suspend, for SMP the wake up sequence crashes. The same behaviour is observed for DT as well. |
Gaps in existing Linux implementation
Linux kernel uses a few ACPI GPE functions to determine if the device can wake up and set appropriate flags. GPE is not present in HW-reduced platforms.
Linux ACPI suspend does not have PSCI bindings