diff options
| author | Sudeep Holla <sudeep.holla@arm.com> | 2015-03-30 11:59:52 +0200 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2015-09-28 12:53:38 +0200 |
| commit | 8def31034d033961a4e1f34a80f317fd7002faee (patch) | |
| tree | 6a16a62fb393a79358c3e5b0e1bb1752014e50d9 /drivers/cpufreq/Kconfig.arm | |
| parent | clk: scpi: add support for cpufreq virtual device (diff) | |
| download | linux-8def31034d033961a4e1f34a80f317fd7002faee.tar.xz linux-8def31034d033961a4e1f34a80f317fd7002faee.zip | |
cpufreq: arm_big_little: add SCPI interface driver
On some ARM based systems, a separate Cortex-M based System Control
Processor(SCP) provides the overall power, clock, reset and system
control including CPU DVFS. SCPI Message Protocol is used to
communicate with the SCPI.
This patch adds a interface driver for adding OPPs and registering
the arm_big_little cpufreq driver for such systems.
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
Cc: linux-pm@vger.kernel.org
Diffstat (limited to 'drivers/cpufreq/Kconfig.arm')
| -rw-r--r-- | drivers/cpufreq/Kconfig.arm | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index cd0391e46c6d..c737f7359974 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -199,6 +199,16 @@ config ARM_SA1100_CPUFREQ config ARM_SA1110_CPUFREQ bool +config ARM_SCPI_CPUFREQ + tristate "SCPI based CPUfreq driver" + depends on ARM_BIG_LITTLE_CPUFREQ && ARM_SCPI_PROTOCOL + help + This adds the CPUfreq driver support for ARM big.LITTLE platforms + using SCPI protocol for CPU power management. + + This driver uses SCPI Message Protocol driver to interact with the + firmware providing the CPU DVFS functionality. + config ARM_SPEAR_CPUFREQ bool "SPEAr CPUFreq support" depends on PLAT_SPEAR |