&spi_nor {
status = "okay";
+--- a/arch/arm/boot/dts/bcm47081-buffalo-wzr-900dhp.dts
++++ b/arch/arm/boot/dts/bcm47081-buffalo-wzr-900dhp.dts
+@@ -107,3 +107,41 @@
+ &usb3_phy {
+ status = "okay";
+ };
++
++&srab {
++ status = "okay";
++
++ ports {
++ port@0 {
++ reg = <0>;
++ label = "lan1";
++ };
++
++ port@1 {
++ reg = <1>;
++ label = "lan2";
++ };
++
++ port@2 {
++ reg = <2>;
++ label = "lan3";
++ };
++
++ port@3 {
++ reg = <3>;
++ label = "lan4";
++ };
++
++ port@4 {
++ reg = <4>;
++ label = "wan";
++ };
++
++ port@5 {
++ reg = <5>;
++ label = "cpu";
++ ethernet = <&gmac0>;
++ };
++ };
++};
++