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OpenCloudOS-Kernel
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cpufreq: tegra: create CONFIG_ARM_TEGRA_CPUFREQ 

currently Tegra cpufreq driver gets built based on ARCH_TEGRA, which doesn't
depend on nor select CPU_FREQ itself, so:

        select CPU_FREQ_TABLE if CPU_FREQ

... isn't guaranteed to fire.

The correct solution seems to be:

* Add CONFIG_ARM_TEGRA_CPUFREQ to drivers/cpufreq/Kconfig.arm.
* Make that Kconfig option selct CPU_FREQ_TABLE.
* Make that Kconfig option be def_bool ARCH_TEGRA.
* Modify drivers/cpufreq/Makefile to build tegra-cpufreq.c based on that.
* Remove all the cpufreq-related stuff from arch/arm/mach-tegra/Kconfig.

That way, tegra-cpufreq.c can't be built if !CPU_FREQ, and Tegra's
cpufreq works the same way as all the other cpufreq drivers.

This patch does it.

Suggested-by: Stephen Warren <swarren@nvidia.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
This commit is contained in:
Viresh Kumar 2013-06-12 12:05:48 +05:30
parent 6866cba3a4
commit dbb8d76e5e
3 changed files with 9 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/arm/mach-tegra/Kconfig
View File

@ -28,7 +28,6 @@ config ARCH_TEGRA_2x_SOC
select ARM_ERRATA_754327 if SMP
select ARM_ERRATA_764369 if SMP
select ARM_GIC
select CPU_FREQ_TABLE if CPU_FREQ
select CPU_V7
select PINCTRL
select PINCTRL_TEGRA20
@ -46,7 +45,6 @@ config ARCH_TEGRA_3x_SOC
select ARM_ERRATA_754322
select ARM_ERRATA_764369 if SMP
select ARM_GIC
select CPU_FREQ_TABLE if CPU_FREQ
select CPU_V7
select PINCTRL
select PINCTRL_TEGRA30
@ -63,7 +61,6 @@ config ARCH_TEGRA_114_SOC
select ARM_ARCH_TIMER
select ARM_GIC
select ARM_L1_CACHE_SHIFT_6
select CPU_FREQ_TABLE if CPU_FREQ
select CPU_V7
select PINCTRL
select PINCTRL_TEGRA114

8
drivers/cpufreq/Kconfig.arm
View File

@ -154,3 +154,11 @@ config ARM_SPEAR_CPUFREQ
default y
help
This adds the CPUFreq driver support for SPEAr SOCs.
config ARM_TEGRA_CPUFREQ
bool "TEGRA CPUFreq support"
depends on ARCH_TEGRA
select CPU_FREQ_TABLE
default y
help
This adds the CPUFreq driver support for TEGRA SOCs.

2
drivers/cpufreq/Makefile
View File

@ -71,7 +71,7 @@ obj-$(CONFIG_ARM_S5PV210_CPUFREQ) += s5pv210-cpufreq.o
obj-$(CONFIG_ARM_SA1100_CPUFREQ) += sa1100-cpufreq.o
obj-$(CONFIG_ARM_SA1110_CPUFREQ) += sa1110-cpufreq.o
obj-$(CONFIG_ARM_SPEAR_CPUFREQ) += spear-cpufreq.o
obj-$(CONFIG_ARCH_TEGRA) += tegra-cpufreq.o
obj-$(CONFIG_ARM_TEGRA_CPUFREQ) += tegra-cpufreq.o
##################################################################################
# PowerPC platform drivers