diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index 32acac9ab81aad5be59676e09aa4c422cb598d6e..addac53e9c54f1000c43e40471b18949ddf23e67 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -365,6 +365,7 @@ CONFIG_PWM=y
 CONFIG_PWM_FSL_FTM=y
 CONFIG_PWM_IMX=y
 CONFIG_NVMEM_IMX_OCOTP=y
+CONFIG_MUX_MMIO=y
 CONFIG_EXT2_FS=y
 CONFIG_EXT2_FS_XATTR=y
 CONFIG_EXT2_FS_POSIX_ACL=y