diff --git a/sys/dev/mii/vscphy.c b/sys/dev/mii/vscphy.c
--- a/sys/dev/mii/vscphy.c
+++ b/sys/dev/mii/vscphy.c
@@ -114,6 +114,7 @@
 		vsc->rxdelay = val;
 	if (OF_getencprop(cfg->phynode, "tx-delay", &val, sizeof(val)) > 0)
 		vsc->txdelay = val;
+	vsc->mii_sc.mii_maxspeed = cfg->max_speed;
 	mii_fdt_free_config(cfg);
 }
 #endif