Hi Wing
Thanks for your contribution. Are there any upstream platforms that these patches have been tested with? If so, it would be good to have visibility of the sw stack under test. Ideally, there would be at least 1 platform that supported both platform-coordinated mode and OS-initiated mode, so that a fair power/performance comparison can be done.
Regards
Dan.
From: Wing Li via TF-A tf-a@lists.trustedfirmware.org Sent: 10 November 2022 05:53 To: tf-a@lists.trustedfirmware.org; tf-a-tests@lists.trustedfirmware.org Subject: [TF-A] PSCI OS-initiated mode
Hi,
The PSCI specification defines two different power state coordination modes for CPU_SUSPEND that can be used to put a core or a group of cores into a low-power state. These modes are the platform-coordinated mode (default) and the OS-initiated mode (optional). OS-initiated mode is currently not supported by TF-A, while both modes are supported by the Linux Kernel.
Requesting reviews for the patches [1] adding support for OS-initiated mode in TF-A and the corresponding tests in TF-A-Tests. Any feedback and comments are much appreciated.
Thanks in advance!
Wing