Re: [edk2-devel] [edk2-platforms][PATCH V1 00/17] Enable idle state and CPPC support for RD platform

["Thomas Abraham" <thomas.abraham@arm.com>]

On 4/28/21 6:05 PM, Pranav Madhu via groups.io wrote:
> 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/74539
> 
> Link to github branch with the patches in this series -
> https://github.com/Pranav-Madhu/edk2-
> platforms/tree/topics/rd_power_management

For this series:
Reviewed-by: Thomas Abraham <thomas.abraham@arm.com>

> 
> Pranav Madhu (17):
>   Platform/Sgi: Macro definitions for ACPI _OSC
>   Platform/Sgi: Add CPU container for SGI-575
>   Platform/Sgi: Low Power Idle states for SGI-575
>   Platform/Sgi: Add CPU container for RD-N1-Edge
>   Platform/Sgi: Low Power Idle states for RD-N1-Edge
>   Platform/Sgi: Add DSDT ACPI table for RD-N1-Edge dual-chip platform
>   Platform/Sgi: Low Power Idle States for RD-N1-Edge dual-chip
>   Platform/Sgi: Add CPU container for RD-V1 platform
>   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: Add CPU container for RD-V1 quad-chip platform
>   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: Add CPU container for RD-N2 platform
>   Platform/Sgi: Low Power Idle States for RD-N2
>   Platform/Sgi: ACPI CPPC support for RD-N2
> 
>  .../AcpiTables/RdN1EdgeX2AcpiTables.inf       |   2 +-
>  Platform/ARM/SgiPkg/Include/SgiAcpiHeader.h   |  69 +++
>  .../ARM/SgiPkg/AcpiTables/RdN1Edge/Dsdt.asl   | 218 +++++--
>  .../ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl | 298 ++++++++++
>  Platform/ARM/SgiPkg/AcpiTables/RdN2/Dsdt.asl  | 540 ++++++++++++++++--
>  Platform/ARM/SgiPkg/AcpiTables/RdV1/Dsdt.asl  | 470 +++++++++++++--
>  .../ARM/SgiPkg/AcpiTables/RdV1Mc/Dsdt.asl     | 481 ++++++++++++++--
>  .../ARM/SgiPkg/AcpiTables/Sgi575/Dsdt.asl     | 215 +++++--
>  8 files changed, 2072 insertions(+), 221 deletions(-)
>  create mode 100644 Platform/ARM/SgiPkg/AcpiTables/RdN1EdgeX2/Dsdt.asl
> 
> --
> 2.17.1
> 
> 
> 
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