Index: sys/dev/fdt/simplebus.h
===================================================================
--- sys/dev/fdt/simplebus.h
+++ sys/dev/fdt/simplebus.h
@@ -70,4 +70,7 @@
 int simplebus_attach_impl(device_t dev);
 int simplebus_detach(device_t dev);
 
+ssize_t simplebus_get_property(device_t bus, device_t child,
+    const char *propname, void *propvalue, size_t size);
+
 #endif	/* _FDT_SIMPLEBUS_H */
Index: sys/dev/fdt/simplebus.c
===================================================================
--- sys/dev/fdt/simplebus.c
+++ sys/dev/fdt/simplebus.c
@@ -55,8 +55,6 @@
 static struct resource_list *simplebus_get_resource_list(device_t bus,
     device_t child);
 
-static ssize_t		simplebus_get_property(device_t bus, device_t child,
-    const char *propname, void *propvalue, size_t size);
 /*
  * ofw_bus interface
  */
@@ -354,7 +352,7 @@
 	return (&ndi->rl);
 }
 
-static ssize_t
+ssize_t
 simplebus_get_property(device_t bus, device_t child, const char *propname,
     void *propvalue, size_t size)
 {
Index: sys/dev/mii/mii_fdt.c
===================================================================
--- sys/dev/mii/mii_fdt.c
+++ sys/dev/mii/mii_fdt.c
@@ -42,6 +42,8 @@
 #include <net/if.h>
 #include <net/if_media.h>
 
+#include <dev/fdt/simplebus.h>
+
 #include <dev/ofw/openfirm.h>
 #include <dev/ofw/ofw_bus.h>
 #include <dev/ofw/ofw_bus_subr.h>
@@ -326,20 +328,6 @@
 	return (&ma->obd);
 }
 
-static ssize_t
-miibus_fdt_get_property(device_t bus, device_t child, const char *propname,
-    void *buf, size_t size)
-{
-	struct mii_attach_args *ma;
-
-	ma = device_get_ivars(child);
-
-	if (ma->obd.obd_node == 0)
-		return (-1);
-
-	return (OF_getencprop(ma->obd.obd_node, propname, buf, size));
-}
-
 static device_method_t miibus_fdt_methods[] = {
 	DEVMETHOD(device_probe,		miibus_fdt_probe),
 	DEVMETHOD(device_attach,	miibus_fdt_attach),
@@ -362,7 +350,7 @@
 	DEVMETHOD(bus_get_resource,		bus_generic_rl_get_resource),
 	DEVMETHOD(bus_set_resource,		bus_generic_rl_set_resource),
 	DEVMETHOD(bus_get_resource_list,	miibus_fdt_get_resource_list),
-	DEVMETHOD(bus_get_property,		miibus_fdt_get_property),
+	DEVMETHOD(bus_get_property,		simplebus_get_property),
 
 	DEVMETHOD_END
 };