diff --git a/drivers/net/smc91111.c b/drivers/net/smc91111.c
index ec4e8e9..61d7f3d 100644
--- a/drivers/net/smc91111.c
+++ b/drivers/net/smc91111.c
@@ -1269,7 +1269,7 @@
 }
 #endif
 
-int smc91111_initialize(u8 dev_num, int base_addr)
+int smc91111_initialize(u8 dev_num, phys_addr_t base_addr)
 {
 	struct smc91111_priv *priv;
 	struct eth_device *dev;
diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c
index 3afebee..8f42026 100644
--- a/drivers/net/smc911x.c
+++ b/drivers/net/smc911x.c
@@ -478,7 +478,7 @@
 	return ret;
 }
 
-int smc911x_initialize(u8 dev_num, int base_addr)
+int smc911x_initialize(u8 dev_num, phys_addr_t base_addr)
 {
 	struct smc911x_priv *priv;
 	int ret;
diff --git a/include/netdev.h b/include/netdev.h
index b960c42..00a0993 100644
--- a/include/netdev.h
+++ b/include/netdev.h
@@ -70,8 +70,8 @@
 int scc_initialize(struct bd_info *bis);
 int sh_eth_initialize(struct bd_info *bis);
 int skge_initialize(struct bd_info *bis);
-int smc91111_initialize(u8 dev_num, int base_addr);
-int smc911x_initialize(u8 dev_num, int base_addr);
+int smc91111_initialize(u8 dev_num, phys_addr_t base_addr);
+int smc911x_initialize(u8 dev_num, phys_addr_t base_addr);
 int uec_standard_init(struct bd_info *bis);
 int uli526x_initialize(struct bd_info *bis);
 int armada100_fec_register(unsigned long base_addr);