diff --git a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-spim-nand-rfb.dts b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-spim-nand-rfb.dts
index 6cecec9..646ec03 100644
--- a/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-spim-nand-rfb.dts
+++ b/target/linux/mediatek/files-5.4/arch/arm64/boot/dts/mediatek/mt7986b-spim-nand-rfb.dts
@@ -78,6 +78,7 @@
 			compatible = "ethernet-phy-id67c9.de0a";
 			reg = <5>;
 			reset-gpios = <&pio 6 1>;
+			reset-assert-us = <600>;
 			reset-deassert-us = <20000>;
 			phy-mode = "2500base-x";
 		};