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>
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm
index cd0391e..642fd49 100644
--- a/drivers/cpufreq/Kconfig.arm
+++ b/drivers/cpufreq/Kconfig.arm
@@ -227,3 +227,20 @@
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.