[-next,0/2] RISC-V: ACPI: Add LPI support

Message

Sunil V L Jan. 11, 2024, 9:30 a.m. UTC

This series adds support for Low Power Idle (LPI) on ACPI based
platforms. 

LPI 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#lpi-low-power-idle-states 
[2] - https://github.com/riscv-non-isa/riscv-acpi-ffh/releases/download/v/riscv-ffh.pdf

Sunil V L (2):
  ACPI: Enable ACPI_PROCESSOR for RISC-V
  cpuidle: RISC-V: Add ACPI LPI support

 drivers/acpi/Kconfig                |  2 +-
 drivers/cpuidle/cpuidle-riscv-sbi.c | 78 +++++++++++++++++++++++++++++
 2 files changed, 79 insertions(+), 1 deletion(-)