diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-2500wan-spim-nand-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986a-2500wan-spim-nand-rfb.dts
index 5504369..67a0ee4 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a-2500wan-spim-nand-rfb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-2500wan-spim-nand-rfb.dts
@@ -179,6 +179,7 @@
 	mtketh-wan = "eth1";
 	mtketh-lan = "lan";
 	mtketh-max-gmac = <2>;
+	mtketh-ppe-num = <2>;
 	status = "okay";
 };
 
diff --git a/arch/arm64/boot/dts/mediatek/mt7986a-2500wan-spim-nor-rfb.dts b/arch/arm64/boot/dts/mediatek/mt7986a-2500wan-spim-nor-rfb.dts
index c1f22d1..dc00e5a 100644
--- a/arch/arm64/boot/dts/mediatek/mt7986a-2500wan-spim-nor-rfb.dts
+++ b/arch/arm64/boot/dts/mediatek/mt7986a-2500wan-spim-nor-rfb.dts
@@ -179,6 +179,7 @@
 	mtketh-wan = "eth1";
 	mtketh-lan = "lan";
 	mtketh-max-gmac = <2>;
+	mtketh-ppe-num = <2>;
 	status = "okay";
 };