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CPPC v4 (ACPI 6.6, Section 8.4.6) adds two optional entries to the _CPC package: 1. OSPM Nominal Performance (8.4.6.1.2.6): A write-only register that lets OSPM inform the platform what it considers nominal performance. The platform classifies performance above this level as boost and below as throttle for its power/thermal decisions. 2. Resource Priority (8.4.6.1.2.7): A Package of Resource Priority Register Descriptor sub-packages that allow OSPM to set relative priority among processors for shared resources (boost, throttle, L2/L3 cache, memory bandwidth). Parsing the full structure is not yet supported; such entries are marked as unsupported. Add v4 _CPC table parsing (25 entries) and update REG_OPTIONAL to mark the two new registers as optional. Signed-off-by: Sumit Gupta <sumitg@nvidia.com> Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org> Reviewed-by: Pierre Gondois <pierre.gondois@arm.com> Link: https://patch.msgid.link/20260527194626.185286-2-sumitg@nvidia.com Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
307 lines
8 KiB
307 lines
8 KiB