diff --git a/arch/Kconfig b/arch/Kconfig
index a946af8..949eb28 100644
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -125,6 +125,7 @@
 	imply PCH
 	imply PHYLIB
 	imply DM_MDIO
+	imply DM_MDIO_MUX
 
 config SH
 	bool "SuperH architecture"