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