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authorWu Zhangjin <wuzhangjin@gmail.com>2009-11-17 01:32:58 +0800
committerRalf Baechle <ralf@linux-mips.org>2009-12-17 01:57:20 +0000
commit9726b43a4d7aaa5b30f559e78768aeb3d17bc224 (patch)
tree8839f39acad92050e79005827b75794ed4bfd830
parent916daba8a9f2617ded8b9255e6b39f066ef60178 (diff)
MIPS: Add basic CPUFreq options.
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>
-rw-r--r--arch/mips/Kconfig3
-rw-r--r--arch/mips/kernel/cpufreq/Kconfig27
2 files changed, 30 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index e7f385444d4..435838ec959 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -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"
diff --git a/arch/mips/kernel/cpufreq/Kconfig b/arch/mips/kernel/cpufreq/Kconfig
new file mode 100644
index 00000000000..37983a15dab
--- /dev/null
+++ b/arch/mips/kernel/cpufreq/Kconfig
@@ -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