diff --git a/target/linux/lantiq/files-5.4/arch/mips/boot/dts/lantiq/ar9_avm_fritz7312.dts b/target/linux/lantiq/files-5.4/arch/mips/boot/dts/lantiq/ar9_avm_fritz7312.dts
index aa825abd9f..0f635127f8 100644
--- a/target/linux/lantiq/files-5.4/arch/mips/boot/dts/lantiq/ar9_avm_fritz7312.dts
+++ b/target/linux/lantiq/files-5.4/arch/mips/boot/dts/lantiq/ar9_avm_fritz7312.dts
@@ -108,6 +108,7 @@
 		phy0: ethernet-phy@0 {
 			reg = <0>;
 			reset-gpios = <&gpio 34 GPIO_ACTIVE_LOW>;
+			max-speed = <100>;
 		};
 	};
 };