arm: octeontx2: Add dtsi/dts files for Octeon TX2 CN913x DB

This patch adds the dtsi/dts files needed to support the Marvell
Octeon TX2 CN913x DB. This is only the base port with not all
interfaces supported fully.

Signed-off-by: Konstantin Porotchkin <kostap@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
diff --git a/arch/arm/dts/cn9131-db-A.dts b/arch/arm/dts/cn9131-db-A.dts
new file mode 100644
index 0000000..81aff17
--- /dev/null
+++ b/arch/arm/dts/cn9131-db-A.dts
@@ -0,0 +1,54 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright (C) 2018-2021 Marvell International Ltd.
+ */
+
+#include "cn9130-db-A.dts"
+#include "cn9131-db.dtsi"
+
+/ {
+	model = "Marvell CN9131 development board (CP NOR) setup(A)";
+	compatible = "marvell,cn9131-db", "marvell,armada-ap806-quad",
+		     "marvell,armada-ap806";
+};
+
+&cp1_comphy {
+	/* Serdes Configuration:
+	 *	Lane 0: PCIe0 (x2)
+	 *	Lane 1: PCIe0 (x2)
+	 *	Lane 2: unconnected
+	 *	Lane 3: USB1
+	 *	Lane 4: SFP (port 0)
+	 *	Lane 5: SATA1
+	 */
+	phy0 {
+		phy-type = <COMPHY_TYPE_PEX0>;
+	};
+	phy1 {
+		phy-type = <COMPHY_TYPE_PEX0>;
+	};
+	phy2 {
+		phy-type = <COMPHY_TYPE_UNCONNECTED>;
+	};
+	phy3 {
+		phy-type = <COMPHY_TYPE_USB3_HOST1>;
+	};
+	phy4 {
+		phy-type = <COMPHY_TYPE_SFI0>;
+		phy-speed = <COMPHY_SPEED_10_3125G>;
+	};
+	phy5 {
+		phy-type = <COMPHY_TYPE_SATA1>;
+	};
+};
+
+&cp1_ethernet {
+	status = "okay";
+};
+
+/* CON50 */
+&cp1_eth0 {
+	status = "okay";
+	phy-mode = "sfi"; /* lane-4 */
+	marvell,sfp-tx-disable-gpio = <&cp1_gpio0 9 GPIO_ACTIVE_HIGH>;
+};