Re: [PATCH v1 -next 0/3] RISC-V: ACPI: Enable CPPC based cpufreq support

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The code looks good to me, so FWIW:
Reviewed-by: Pierre Gondois <pierre.gondois@xxxxxxx>

+Sudeep as this touches cppc/arm in case he didn't see the patches

On 2/8/24 04:44, Sunil V L wrote:
This series enables the support for "Collaborative Processor Performance
Control (CPPC) on ACPI based RISC-V platforms. It depends on the
encoding of CPPC registers as defined in RISC-V FFH spec [2].

CPPC is described in the ACPI spec [1]. RISC-V FFH spec required to
enable this, is available at [2].

[1] - https://uefi.org/specs/ACPI/6.5/08_Processor_Configuration_and_Control.html#collaborative-processor-performance-control
[2] - https://github.com/riscv-non-isa/riscv-acpi-ffh/releases/download/v1.0.0/riscv-ffh.pdf

The series is based on the LPI support series.
Based-on: 20240118062930.245937-1-sunilvl@xxxxxxxxxxxxxxxx
(https://lore.kernel.org/lkml/20240118062930.245937-1-sunilvl@xxxxxxxxxxxxxxxx/)

Sunil V L (3):
   ACPI: RISC-V: Add CPPC driver
   cpufreq: Move CPPC configs to common Kconfig and add RISC-V
   RISC-V: defconfig: Enable CONFIG_ACPI_CPPC_CPUFREQ

  arch/riscv/configs/defconfig |   1 +
  drivers/acpi/riscv/Makefile  |   1 +
  drivers/acpi/riscv/cppc.c    | 157 +++++++++++++++++++++++++++++++++++
  drivers/cpufreq/Kconfig      |  29 +++++++
  drivers/cpufreq/Kconfig.arm  |  26 ------
  5 files changed, 188 insertions(+), 26 deletions(-)
  create mode 100644 drivers/acpi/riscv/cppc.c





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