ath79: add AR7240 dtsi

Signed-off-by: Alex Maclean <monkeh@monkeh.net>

target/linux/ath79/dts/ar7240.dtsi

@@ -0,0 +1,66 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "ar724x.dtsi"
+
+/ {
+	usb_phy: usb-phy {
+		compatible = "qca,ar7200-usb-phy";
+
+		reset-names = "usb-phy", "usb-ohci-dll";
+		resets = <&rst 4>, <&rst 3>;
+
+		#phy-cells = <0>;
+
+		status = "disabled";
+	};
+};
+
+&ahb {
+	usb: usb@1b000000 {
+		compatible = "generic-ohci";
+		reg = <0x1b000000 0x1000>;
+
+		interrupts = <3>;
+
+		resets = <&rst 5>;
+		reset-names = "usb-host";
+
+		phy-names = "usb-phy";
+		phys = <&usb_phy>;
+
+		status = "disabled";
+	};
+};
+
+&mdio0 {
+	builtin-switch;
+};
+
+&eth0 {
+	compatible = "qca,ar7240-eth", "syscon";
+
+	pll-data = <0x00110000 0x00001099 0x00991099>;
+
+	resets = <&rst 8>, <&rst 9>;
+	reset-names = "phy", "mac";
+};
+
+&mdio1 {
+	builtin-switch;
+};
+
+&eth1 {
+	compatible = "qca,ar7240-eth", "syscon";
+
+	pll-data = <0x00110000 0x00001099 0x00991099>;
+
+	resets = <&rst 12>, <&rst 13>;
+	reset-names = "phy", "mac";
+
+	phy-mode = "gmii";
+
+	fixed-link {
+		speed = <1000>;
+		full-duplex;
+	};
+};