arm64: marvell: dts: add PPv2.2 description to Armada 7K/8K

This commit adds the description of the PPv2.2 hardware block for the
Marvell Armada 7K and Armada 8K processors, and their corresponding Armada
7040 and 8040 Development boards.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
diff --git a/arch/arm64/boot/dts/marvell/armada-7040-db.dts b/arch/arm64/boot/dts/marvell/armada-7040-db.dts
index 070b589..bb0e1e8 100644
--- a/arch/arm64/boot/dts/marvell/armada-7040-db.dts
+++ b/arch/arm64/boot/dts/marvell/armada-7040-db.dts
@@ -146,3 +146,28 @@
 &cpm_usb3_1 {
 	status = "okay";
 };
+
+&cpm_mdio {
+	phy0: ethernet-phy@0 {
+		reg = <0>;
+	};
+	phy1: ethernet-phy@1 {
+		reg = <1>;
+	};
+};
+
+&cpm_ethernet {
+	status = "okay";
+};
+
+&cpm_eth1 {
+	status = "okay";
+	phy = <&phy0>;
+	phy-mode = "sgmii";
+};
+
+&cpm_eth2 {
+	status = "okay";
+	phy = <&phy1>;
+	phy-mode = "rgmii-id";
+};