v1: - https://edk2.groups.io/g/devel/message/104127 v2: - https://edk2.groups.io/g/devel/message/110048 - Rebase patches on latest version. - Correct frequency values which were advertised in KHz when CPPC spec require them to be in MHz. v3: - Rebase on latest master - Use ACPI 6.5 definitions instead of 6.4 previously - Renamed ArmScmiInfoLib to DynamicTablesScmiInfoLib
A recent patchset [1] allows the generation of _PSD/_CPC ACPI objects by querying the relevant information through the SCMI protocol. - The _PSD object describes to which performance domain a CPU belongs. CPUs in the same performance domain have the same frequency. - The _CPC object describes an interface to control the performance level of a CPU (i.e. its frequency). Demonstrate the _PSD/_CPC generation functionality on Juno-r2 platforms. In order to work, the SCP must describe performance levels on a unified scale (i.e. not as frequencies). The following performance level values where used for testing: - little CPUs OPPs: [181, 322, 383] * 1000 - big CPUs OPPs: [512, 833, 1024] * 1024 The SCP should also: - have fast channel enabled - set the `approximate_level` feature to allow performance level requests in between OPP leveles. [1] https://edk2.groups.io/g/devel/message/111567 Pierre Gondois (3): Platform/ARM: Juno: Fix typo Platform/ARM: Juno: Generate _PSD objects Platform/ARM: Juno: Generate _CPC objects for JunoR2 .../ConfigurationManager.c | 333 +++++++++++++++++- .../ConfigurationManager.h | 27 +- .../ConfigurationManagerDxe.inf | 1 + 3 files changed, 348 insertions(+), 13 deletions(-) -- 2.25.1 -=-=-=-=-=-=-=-=-=-=-=- Groups.io Links: You receive all messages sent to this group. View/Reply Online (#111579): https://edk2.groups.io/g/devel/message/111579 Mute This Topic: https://groups.io/mt/102732063/21656 Group Owner: devel+ow...@edk2.groups.io Unsubscribe: https://edk2.groups.io/g/devel/unsub [arch...@mail-archive.com] -=-=-=-=-=-=-=-=-=-=-=-
