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-rw-r--r--drivers/devfreq/Kconfig13
1 files changed, 13 insertions, 0 deletions
diff --git a/drivers/devfreq/Kconfig b/drivers/devfreq/Kconfig
index 8f0491037080..464fa2147dfb 100644
--- a/drivers/devfreq/Kconfig
+++ b/drivers/devfreq/Kconfig
@@ -65,4 +65,17 @@ config DEVFREQ_GOV_USERSPACE
comment "DEVFREQ Drivers"
+config ARM_EXYNOS4_BUS_DEVFREQ
+ bool "ARM Exynos4210/4212/4412 Memory Bus DEVFREQ Driver"
+ depends on CPU_EXYNOS4210 || CPU_EXYNOS4212 || CPU_EXYNOS4412
+ select ARCH_HAS_OPP
+ select DEVFREQ_GOV_SIMPLE_ONDEMAND
+ help
+ This adds the DEVFREQ driver for Exynos4210 memory bus (vdd_int)
+ and Exynos4212/4412 memory interface and bus (vdd_mif + vdd_int).
+ It reads PPMU counters of memory controllers and adjusts
+ the operating frequencies and voltages with OPP support.
+ To operate with optimal voltages, ASV support is required
+ (CONFIG_EXYNOS_ASV).
+
endif # PM_DEVFREQ