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| author | Viresh Kumar <viresh.kumar@linaro.org> | 2013-04-01 12:57:49 +0000 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-04-02 15:26:32 +0200 |
| commit | 8a67f0ef2b684b34162d39e8f436fe39e9635a19 (patch) | |
| tree | dc997ac3064c69e775485213b824e7c3efeb5b99 /drivers/cpufreq/Kconfig.arm | |
| parent | eb2f50ff93f08c8001d0d7e1148948ba80989aaf (diff) | |
| download | linux-stable-8a67f0ef2b684b34162d39e8f436fe39e9635a19.tar.gz linux-stable-8a67f0ef2b684b34162d39e8f436fe39e9635a19.tar.bz2 linux-stable-8a67f0ef2b684b34162d39e8f436fe39e9635a19.zip | |
cpufreq: ARM big LITTLE: Add generic cpufreq driver and its DT glue
big LITTLE is ARM's new Architecture focussing power/performance needs of modern
world. More information about big LITTLE can be found here:
http://www.arm.com/products/processors/technologies/biglittleprocessing.php
http://lwn.net/Articles/481055/
In order to keep cpufreq support for all big LITTLE platforms simple/generic,
this patch tries to add a generic cpufreq driver layer for all big LITTLE
platforms.
The driver is divided into two parts:
- Core driver: Generic and shared across all big LITTLE SoC's
- Glue drivers: Per platform drivers providing ops to the core driver
This patch adds in a generic glue driver which would extract information from
Device Tree.
Future SoC's can either reuse the DT glue or write their own depending on the
need.
Signed-off-by: Sudeep KarkadaNagesha <sudeep.karkadanagesha@arm.com>
Signed-off-by: Viresh Kumar <viresh.kumar@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.arm | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/cpufreq/Kconfig.arm b/drivers/cpufreq/Kconfig.arm index 030ddf6dd3f1..87b7e48698d0 100644 --- a/drivers/cpufreq/Kconfig.arm +++ b/drivers/cpufreq/Kconfig.arm @@ -2,6 +2,18 @@ # ARM CPU Frequency scaling drivers # +config ARM_BIG_LITTLE_CPUFREQ + tristate + depends on ARM_CPU_TOPOLOGY + +config ARM_DT_BL_CPUFREQ + tristate "Generic ARM big LITTLE CPUfreq driver probed via DT" + select ARM_BIG_LITTLE_CPUFREQ + depends on OF && HAVE_CLK + help + This enables the Generic CPUfreq driver for ARM big.LITTLE platform. + This gets frequency tables from DT. + config ARM_OMAP2PLUS_CPUFREQ bool "TI OMAP2+" depends on ARCH_OMAP2PLUS |