CONFIG_ACPI_CPPC_CPUFREQ: CPUFreq driver based on the ACPI CPPC spec

General informations

The Linux kernel configuration item CONFIG_ACPI_CPPC_CPUFREQ has multiple definitions:

CPUFreq driver based on the ACPI CPPC spec found in drivers/cpufreq/Kconfig

The configuration item CONFIG_ACPI_CPPC_CPUFREQ:

• prompt: CPUFreq driver based on the ACPI CPPC spec
• type: tristate
• depends on: ( CONFIG_ACPI_PROCESSOR ) && ( CONFIG_ARM || CONFIG_ARM64 || CONFIG_RISCV )
• defined in drivers/cpufreq/Kconfig
• found in Linux kernels: 6.9–6.17, 6.18-rc+HEAD
• modules built: cppc_cpufreq, cppc_cpufreq

Help text

This adds a CPUFreq driver which uses CPPC methods as described in the ACPIv5.1 spec. CPPC stands for Collaborative Processor Performance Controls. It is based on an abstract continuous scale of CPU performance values which allows the remote power processor to flexibly optimize for power and performance. CPPC relies on power management firmware support for its operation.

If in doubt, say N.

CPUFreq driver based on the ACPI CPPC spec found in drivers/cpufreq/Kconfig.arm

The configuration item CONFIG_ACPI_CPPC_CPUFREQ:

• prompt: CPUFreq driver based on the ACPI CPPC spec
• type: tristate
• depends on: CONFIG_ACPI_PROCESSOR
• defined in drivers/cpufreq/Kconfig.arm
• found in Linux kernels: 4.4–4.20, 5.0–5.19, 6.0–6.8
• modules built: cppc_cpufreq, cppc_cpufreq

Help text

This adds a CPUFreq driver which uses CPPC methods as described in the ACPIv5.1 spec. CPPC stands for Collaborative Processor Performance Controls. It is based on an abstract continuous scale of CPU performance values which allows the remote power processor to flexibly optimize for power and performance. CPPC relies on power management firmware support for its operation.

If in doubt, say N.

Hardware

LKDDb

Raw data from LKDDb:

• lkddb acpi "ACPI0007" : CONFIG_ACPI_CPPC_CPUFREQ CONFIG_CPU_FREQ : drivers/cpufreq/cppc_cpufreq.c # in 4.10–4.20, 5.0–5.19, 6.0–6.17, 6.18-rc+HEAD
• lkddb module cppc_cpufreq CONFIG_ACPI_CPPC_CPUFREQ : drivers/cpufreq/Kconfig : "CPUFreq driver based on the ACPI CPPC spec" # in 6.9–6.17, 6.18-rc+HEAD
• lkddb module cppc_cpufreq CONFIG_ACPI_CPPC_CPUFREQ : drivers/cpufreq/Kconfig.arm : "CPUFreq driver based on the ACPI CPPC spec" # in 4.4–4.20, 5.0–5.19, 6.0–6.8

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

• Linux kernel
• Linux Kernel Driver DataBase (LKDDb)

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