diff --git a/board/freescale/t102xqds/eth_t102xqds.c b/board/freescale/t102xqds/eth_t102xqds.c
index 7723f58..441d6a3 100644
--- a/board/freescale/t102xqds/eth_t102xqds.c
+++ b/board/freescale/t102xqds/eth_t102xqds.c
@@ -172,8 +172,8 @@
 	if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_RGMII) {
 		if (port == FM1_DTSEC3) {
 			fdt_set_phy_handle(fdt, compat, addr, "rgmii_phy2");
-			fdt_setprop(fdt, offset, "phy-connection-type",
-				    "rgmii", 5);
+			fdt_setprop_string(fdt, offset, "phy-connection-type",
+					   "rgmii");
 			fdt_status_okay_by_alias(fdt, "emi1_rgmii1");
 		}
 	} else if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_SGMII) {
@@ -207,7 +207,8 @@
 			break;
 		}
 		fdt_delprop(fdt, offset, "phy-connection-type");
-		fdt_setprop(fdt, offset, "phy-connection-type", "qsgmii", 6);
+		fdt_setprop_string(fdt, offset, "phy-connection-type",
+				   "qsgmii");
 		fdt_status_okay_by_alias(fdt, "emi1_slot2");
 	} else if (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_XGMII) {
 		/* XFI interface */
@@ -219,7 +220,7 @@
 		/* no PHY for XFI */
 		fdt_delprop(fdt, offset, "phy-handle");
 		fdt_setprop(fdt, offset, "fixed-link", &f_link, sizeof(f_link));
-		fdt_setprop(fdt, offset, "phy-connection-type", "xgmii", 5);
+		fdt_setprop_string(fdt, offset, "phy-connection-type", "xgmii");
 	}
 }
 
diff --git a/board/freescale/t102xrdb/eth_t102xrdb.c b/board/freescale/t102xrdb/eth_t102xrdb.c
index dd386bc..856ec6e 100644
--- a/board/freescale/t102xrdb/eth_t102xrdb.c
+++ b/board/freescale/t102xrdb/eth_t102xrdb.c
@@ -133,8 +133,8 @@
 	     (fm_info_get_enet_if(port) == PHY_INTERFACE_MODE_SGMII)) &&
 			(port == FM1_DTSEC3)) {
 		fdt_set_phy_handle(fdt, compat, addr, "sg_2500_aqr105_phy4");
-		fdt_setprop(fdt, offset, "phy-connection-type",
-			    "sgmii-2500", 10);
+		fdt_setprop_string(fdt, offset, "phy-connection-type",
+				   "sgmii-2500");
 		fdt_status_disabled_by_alias(fdt, "xg_aqr105_phy3");
 	}
 #endif