powerpc: dts: add QorIQ DPAA 1 FMan v3 device tree nodes

Add the QorIQ DPAA Frame Manager version 3 device tree nodes
description. The device tree fragments are copied over with little
modification from the Linux kernel source code.

Signed-off-by: Madalin Bucur <madalin.bucur@oss.nxp.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>
diff --git a/arch/powerpc/dts/qoriq-fman3-0-1g-3.dtsi b/arch/powerpc/dts/qoriq-fman3-0-1g-3.dtsi
new file mode 100644
index 0000000..d59e625
--- /dev/null
+++ b/arch/powerpc/dts/qoriq-fman3-0-1g-3.dtsi
@@ -0,0 +1,43 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR BSD-3-Clause)
+/*
+ * QorIQ FMan v3 1g port #3 device tree stub [ controller @ offset 0x400000 ]
+ *
+ * Copyright 2012 - 2015 Freescale Semiconductor Inc.
+ * Copyright 2020 NXP
+ *
+ */
+
+fman@400000 {
+	fman0_rx_0x0b: port@8b000 {
+		cell-index = <0xb>;
+		compatible = "fsl,fman-v3-port-rx";
+		reg = <0x8b000 0x1000>;
+	};
+
+	fman0_tx_0x2b: port@ab000 {
+		cell-index = <0x2b>;
+		compatible = "fsl,fman-v3-port-tx";
+		reg = <0xab000 0x1000>;
+	};
+
+	ethernet@e6000 {
+		cell-index = <3>;
+		compatible = "fsl,fman-memac";
+		reg = <0xe6000 0x1000>;
+		fsl,fman-ports = <&fman0_rx_0x0b &fman0_tx_0x2b>;
+		ptp-timer = <&ptp_timer0>;
+		pcsphy-handle = <&pcsphy3>;
+	};
+
+	mdio@e7000 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "fsl,fman-memac-mdio", "fsl,fman-xmdio";
+		reg = <0xe7000 0x1000>;
+		fsl,erratum-a011043; /* must ignore read errors */
+
+		pcsphy3: ethernet-phy@0 {
+			reg = <0x0>;
+		};
+	};
+};