[edk2-devel] [edk2-platforms][PATCH V2 00/11] Enable idle state and CPPC support for RD platform

[Sami Mujawar]

For this series.

Reviewed-by: Sami Mujawar <sami.mujawar at arm.com>

Regards,

Sami Mujawar

On 11/05/2021, 08:47, "Pranav Madhu" <pranav.madhu at arm.com> wrote:

    Changes since V1:
    - Remove patches that add CPU container object into DSDT
    - Addressed comments from Sami

    Low Power Idle (LPI) and Collaborative Processor Performance Control
    (CPPC) are two power management mechanisms described in ACPI 6.4
    specification. OSPM uses the _LPI object to select a local power state
    for each level of processor hierarchy in the system. Collaborative
    processor performance control (CPPC) defines an abstracted and flexible
    mechanism for OSPM to collaborate with an entity in the platform to
    manage the performance of a processor. In this patch series, CPPC
    support depends on the availability of Activity Monitor Unit (AMU)
    extension for CPU performance monitoring as defined in the Arm v8.4
    architecture reference manuals. So CPPC is supported for RD-V1 and
    RD-N2 platforms.

    This patch series adds LPI support for all the Neoverse reference
    design platforms. CPPC support is added for RD-V1, RD-V1-MC and
    RD-N2 platforms.

    This patch series should be applied on top of the patch series
    https://edk2.groups.io/g/devel/message/74924

    Link to github branch with the patches in this series -
    https://github.com/Pranav-Madhu/edk2-platforms/tree/topics/rd_power_management


    Pranav Madhu (11):
      Platform/Sgi: Macro definitions for ACPI _OSC
      Platform/Sgi: Low Power Idle states for SGI-575
      Platform/Sgi: Low Power Idle states for RD-N1-Edge
      Platform/Sgi: Low Power Idle States for RD-N1-Edge dual-chip
      Platform/Sgi: Low Power Idle states for RD-V1 platform
      Platform/Sgi: Macro definitions for ACPI CPPC
      Platform/Sgi: ACPI CPPC support for RD-V1
      Platform/Sgi: Low Power Idle States for RD-V1 quad-chip platform
      Platform/Sgi: ACPI CPPC support for RD-V1 quad-chip platform
      Platform/Sgi: Low Power Idle States for RD-N2
      Platform/Sgi: ACPI CPPC support for RD-N2

     Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h   |  90 +++++
     .../ARM/SgiPkg/AcpiTables/RdN1Edge/Dsdt.asl   | 132 +++++++
     .../ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl | 162 ++++++++
     Platform/ARM/SgiPkg/AcpiTables/RdN2/Dsdt.asl  | 364 ++++++++++++++++++
     Platform/ARM/SgiPkg/AcpiTables/RdV1/Dsdt.asl  | 294 ++++++++++++++
     .../ARM/SgiPkg/AcpiTables/RdV1Mc/Dsdt.asl     | 306 +++++++++++++++
     .../ARM/SgiPkg/AcpiTables/Sgi575/Dsdt.asl     | 132 +++++++
     7 files changed, 1480 insertions(+)

    -- 
    2.17.1




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