ath79: add Embedded Wireless Balin Platform

Add the Embedded Wireless "Balin" platform, it is in ar71xx too
 SoC: QCA AR9344 or AR9350
 RAM: DDR2-RAM 64MBytes
 Flash: SPI-NOR 16MBytes
 WLAN: 2 x 2 MIMO 2.4 & 5 GHz IEEE802.11 a/b/g/n
 Ethernet: 3 x 10/100 Mb/s
 USB: 1 x USB2.0 Host/Device bootstrap-pin at power-up
 PCIe: MiniPCIe - 1 x lane PCIe 1.2
 Button: 1 x Reset-Button
 UART: 1 x Normal, 1 x High-Speed
 JTAG: 1 x EJTAG
 LED: 1 x Green Power/Status LED
 GPIO: 10 x Input/Output multiplexed

The module comes already with the current vanilla OpenWrt firmware.
To update, use "sysupgrade -n --force <image>" image directly in
vendor firmware. This resets the existing configurations back to
default!

Signed-off-by: Catrinel Catrinescu <[email protected]>
[indent, led function+color properties, fix partition unit-address,
re-enable pcie port, mention button+led in commit message]
Signed-off-by: Christian Lamparter <[email protected]>

target/linux/ath79/dts/ar9344_embeddedwireless_balin.dts

@@ -0,0 +1,130 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "ar9344.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	model = "Embedded Wireless Balin";
+	compatible = "embeddedwireless,balin", "qca,ar9344";
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	aliases {
+		led-boot = &led_system;
+		led-failsafe = &led_system;
+		led-running = &led_system;
+		led-upgrade = &led_system;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_system: led-0 {
+			label = "green:system";
+			color = <LED_COLOR_ID_GREEN>;
+			function = LED_FUNCTION_POWER;
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 18 GPIO_ACTIVE_HIGH>;
+			debounce-interval = <60>;
+		};
+	};
+};
+
+&ref {
+	clock-frequency = <40000000>;
+};
+
+&spi {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <50000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x040000>;
+				read-only;
+			};
+
+			partition@40000 {
+				label = "u-boot-env";
+				reg = <0x040000 0x010000>;
+			};
+
+			partition@50000 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x050000 0xfa0000>;
+			};
+
+			partition@ff0000 {
+				label = "art";
+				reg = <0xff0000 0x010000>;
+				read-only;
+
+				compatible = "nvmem-cells";
+				#address-cells = <1>;
+				#size-cells = <1>;
+
+				calibration_art_1000: calibration_data@1000 {
+					reg = <0x1000 0x440>;
+				};
+
+				macaddr_art_1002: macaddr@1002 {
+					reg = <0x1002 0x6>;
+				};
+			};
+		};
+	};
+};
+
+&builtin_switch {
+	/delete-property/qca,phy4-mii-enable;
+};
+
+&eth1 {
+	status = "okay";
+
+	nvmem-cells = <&macaddr_art_1002>;
+	nvmem-cell-names = "mac-address";
+	mac-address-increment-byte = <3>;
+	mac-address-increment = <0x40>;
+
+	gmac-config {
+		device = <&gmac>;
+		switch-phy-swap = <0>;
+		switch-only-mode = <1>;
+	};
+};
+
+&wmac {
+	status = "okay";
+
+	nvmem-cells = <&macaddr_art_1002>, <&calibration_art_1000>;
+	nvmem-cell-names = "mac-address", "calibration";
+};
+
+&pcie {
+	status = "okay";
+};

target/linux/ath79/generic/base-files/etc/board.d/02_network

@@ -265,6 +265,10 @@ ath79_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"0@eth0" "2:lan:4" "3:lan:3" "4:lan:2" "5:lan:1" "1:wan"
 		;;
+	embeddedwireless,balin)
+		ucidef_add_switch "switch0" \
+			"0@eth0" "5:lan:1" "4:lan:2" "3:wan"
+		;;
 	embeddedwireless,dorin)
 		ucidef_add_switch "switch0" \
 			"0@eth0" "1:wan" "2:lan:3" "3:lan:2"

target/linux/ath79/image/generic.mk

@@ -1028,6 +1028,15 @@ define Device/elecom_wrc-300ghbk2-i
 endef
 TARGET_DEVICES += elecom_wrc-300ghbk2-i
 
+define Device/embeddedwireless_balin
+  SOC := ar9344
+  DEVICE_VENDOR := Embedded Wireless
+  DEVICE_MODEL := Balin
+  DEVICE_PACKAGES := kmod-usb-chipidea2
+  IMAGE_SIZE := 16000k
+endef
+TARGET_DEVICES += embeddedwireless_balin
+
 define Device/embeddedwireless_dorin
   SOC := ar9331
   DEVICE_VENDOR := Embedded Wireless