diff --git a/arch/arm/configs/msm8960_defconfig b/arch/arm/configs/msm8960_defconfig
index 4bb3e93..8ccb48a 100755
--- a/arch/arm/configs/msm8960_defconfig
+++ b/arch/arm/configs/msm8960_defconfig
@@ -59,6 +59,7 @@
 CONFIG_MSM_WCNSS_SSR_8960=y
 CONFIG_MSM_RPM_LOG=y
 CONFIG_MSM_BUS_SCALING=y
+CONFIG_MSM_BUS_RPM_MULTI_TIER_ENABLED=y
 CONFIG_MSM_WATCHDOG=y
 CONFIG_MSM_DLOAD_MODE=y
 CONFIG_MSM_QDSS=y