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MIPS: Add basic CPUFreq options.

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This patch adds basic options for MIPS CPUFreq support.

Since the cp0 timer's frequency is based on the processor clockrate it can
not be used with CPUFReq; an additional external timer is required.

Signed-off-by: Wu Zhangjin <wuzhangjin@gmail.com>
Cc: linux-mips@linux-mips.org
Cc: cpufreq@vger.kernel.org,
Cc: Dave Jones <davej@redhat.com>,
Cc: Dominik Brodowski <linux@dominikbrodowski.net>,
Cc: yanh@lemote.com
Cc: huhb@lemote.com,
Patchwork: http://patchwork.linux-mips.org/patch/659/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
This commit is contained in:
Wu Zhangjin 2009-11-17 01:32:58 +08:00 committed by Ralf Baechle
parent 916daba8a9
commit 9726b43a4d
2 changed files with 30 additions and 0 deletions
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3
arch/mips/Kconfig
View File

@ -2161,6 +2161,7 @@ config MMU
config I8253
bool
select MIPS_EXTERNAL_TIMER
config ZONE_DMA32
bool
@ -2237,6 +2238,8 @@ source "kernel/power/Kconfig"
endmenu
source "arch/mips/kernel/cpufreq/Kconfig"
source "net/Kconfig"
source "drivers/Kconfig"

27
arch/mips/kernel/cpufreq/Kconfig Normal file
View File

@ -0,0 +1,27 @@
#
# CPU Frequency scaling
#
config MIPS_EXTERNAL_TIMER
bool
config MIPS_CPUFREQ
bool
default y
depends on CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
if MIPS_CPUFREQ
menu "CPU Frequency scaling"
source "drivers/cpufreq/Kconfig"
if CPU_FREQ
comment "CPUFreq processor drivers"
endif # CPU_FREQ
endmenu
endif # MIPS_CPUFREQ