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authorAshwin Chaugule <ashwin.chaugule@linaro.org>2015-10-02 17:04:01 +0300
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-10-13 00:04:31 +0300
commit5477fb3bd1e8e43299761850318fe0057172a24a (patch)
tree0beb02d51d5901f46bd2f90a4938d3a23423c680 /drivers/cpufreq/Kconfig.arm
parent337aadff8e4567e39669e07d9a88b789d78458b5 (diff)
downloadlinux-5477fb3bd1e8e43299761850318fe0057172a24a.tar.xz
ACPI / CPPC: Add a CPUFreq driver for use with CPPC
This driver utilizes the methods introduced in a previous patch titled - "ACPI: Introduce CPU performance controls using CPPC" and enables usage with existing CPUFreq governors. Signed-off-by: Ashwin Chaugule <ashwin.chaugule@linaro.org> Reviewed-by: Al Stone <al.stone@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/cpufreq/Kconfig.arm')
-rw-r--r--drivers/cpufreq/Kconfig.arm17
1 files changed, 17 insertions, 0 deletions
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index cd0391e46c6d..642fd49793b0 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -227,3 +227,20 @@ config ARM_PXA2xx_CPUFREQ
This add the CPUFreq driver support for Intel PXA2xx SOCs.
If in doubt, say N.
+
+config ACPI_CPPC_CPUFREQ
+ tristate "CPUFreq driver based on the ACPI CPPC spec"
+ depends on ACPI
+ select ACPI_CPPC_LIB
+ default n
+ help
+ 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.