[Bug 217696] Looking for a way to enable power saving mode for Ryzen APUs, along with limiting the upper temperature and total power consumption

[bugzilla-daemon@kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=217696

--- Comment #19 from Mario Limonciello (AMD) (mario.limonciello@amd.com) ---
> /sys/firmware/acpi/platform_profile which now contains "balanced".
> /sys/firmware/acpi/platform_profile_choices contains:
> low_power balanced performance

OK good news and bad news.

* The good news: this means the patch "works" and you're now seeing the extra
values for power slider notifications.

* The bad news: It appears that HP's EC doesn't do "all" the power state change
notifications.  Some of it is handled by code that runs in the APU's TEE
environment.

> [45870.908318] amd-pmf AMDI0102:00: supported functions:0xe0c3
> notifications:0x10

There are some other bits not yet supported by amd-pmf in Linux.  Let's leave
this issue opened until that code is submitted.

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