ath79: add support for Longdata APS256

Forum discussion : https://forum.openwrt.org/t/aps-256va-help-for-identification/143653/52

Specification:
Power: 12-36V input via 5,5/2,1 DC barrel jack, or 5V Micro USB-B
CPU: Atheros AR9344 rev 2
RAM: 128MB
Flash: 16MB
WI-Fi: 2.4GHz
Fast Ethernet: 1 WAN and 2 LAN
USB: 2 x USB-A, 1 x micro-USB-B (for power input)
WWAN: 3G modem via extended mini-PCIE form factor (can be replaced with Wifi 5GHz card)

The device come with custom openwrt BB an CC.

Because of limited LAN port, I disable GMAC0, so the WAN port can be connected to GMAC1 and function as LAN port as well.

Enable ssh access and Backup:

1.  open router admin page via LAN cable
2.  browse 192.168.111.1:8000
3.  login with password 123456
4.  click wifi icon on top menu
5.  change the path at the end of the url (after random hash) with /admin/system/flashops
        it will looks like this:
        http://192.168.111.1:8000/cgi-bin/luci/;stok=29698152cf64c980177a04f86c99ea0d/admin/system/flashops
        (the hash after "stok=" will be different)
6.  restore the config with this modified backup (can be created manually by changing dropbear config to allow ssh)
        https://drive.google.com/file/d/1Vs-k7DHBSRZFfkxv1cMOmgAPZfB-RUen/view?usp=sharing
7.  now you can login to ssh with root user and 123456 password, and backup all partition and upgrade firmware

!!! BACKUP EVERY PARTITION !!!

Flashing instructions:
- Flash directly from factory web interface accessed from "Enable ssh access" step 5

Signed-off-by: Roy H <roy@altbytes.com>
Link: https://github.com/openwrt/openwrt/pull/17939
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

4 files changed, 197 insertions, 0 deletions

diff --git a/target/linux/ath79/dts/ar9344_longdata_aps256.dts b/target/linux/ath79/dts/ar9344_longdata_aps256.dts
new file mode 100644
index 0000000000..0e867bca40
--- /dev/null
+++ b/target/linux/ath79/dts/ar9344_longdata_aps256.dts
@@ -0,0 +1,178 @@
+// 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 = "LONGDATA APS256";
+	compatible = "longdata,aps256", "qca,ar9344";
+
+	aliases {
+		led-boot = &led_system;
+		led-failsafe = &led_system;
+		led-running = &led_system;
+		led-upgrade = &led_system;
+		label-mac-device = &wmac;
+	};
+
+	leds: leds {
+		compatible = "gpio-leds";
+
+		wlan2g {
+			function = LED_FUNCTION_WLAN;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0tpt";
+		};
+
+		led_system: system {
+			function = LED_FUNCTION_STATUS;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+  
+		internet {
+			function = LED_FUNCTION_WAN_ONLINE;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+		};
+		
+		wan {
+			function = LED_FUNCTION_WAN;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+		};
+
+		lan1 {
+			function = LED_FUNCTION_LAN;
+			function-enumerator = <1>;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio 19 GPIO_ACTIVE_LOW>;
+		};
+		
+		lan2 {
+			function = LED_FUNCTION_LAN;
+			function-enumerator = <2>;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&gpio 20 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "Reset button";
+			linux,code = <KEY_RESTART>;
+			gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+};
+
+&ref {
+	clock-frequency = <40000000>;
+};
+
+&spi {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <33000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			uboot: partition@0 {
+				label = "u-boot";
+				reg = <0x000000 0x020000>;
+				read-only;
+			};
+
+			partition@20000 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x020000 0xfd0000>;
+			};
+
+			partition@7f0000 {
+				label = "art";
+				reg = <0xff0000 0x010000>;
+				read-only;
+
+				
+				nvmem-layout {
+					compatible = "fixed-layout";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					cal_art_1000: calibration@1000 {
+						reg = <0x1000 0x440>;
+					};
+
+					macaddr_art_1002: macaddr@1002 {
+						compatible = "mac-base";
+						reg = <0x1002 0x6>;
+						#nvmem-cell-cells = <1>;
+					};
+				};
+			};
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&wmac {
+	status = "okay";
+
+	nvmem-cells = <&cal_art_1000>;
+	nvmem-cell-names = "calibration";
+};
+
+&gpio {
+	
+};
+
+&builtin_switch {
+	/delete-property/ qca,phy4-mii-enable; /* need to delete this to make all 5 FE ports work */
+};
+
+&usb_phy {
+	status = "okay";
+};
+
+&usb {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	status = "okay";
+
+	hub_port: port@1 {
+		reg = <1>;
+		#trigger-source-cells = <0>;
+	};
+};
+
+&eth1 {
+	status = "okay";
+
+	nvmem-cells = <&macaddr_art_1002 0>;
+	nvmem-cell-names = "mac-address";
+
+	gmac-config {
+		device = <&gmac>;
+		switch-phy-swap = <0>;
+		switch-only-mode = <1>;
+	};
+};
+
diff --git a/target/linux/ath79/generic/base-files/etc/board.d/01_leds b/target/linux/ath79/generic/base-files/etc/board.d/01_leds
index b9142c8a07..4eddde1115 100644
--- a/target/linux/ath79/generic/base-files/etc/board.d/01_leds
+++ b/target/linux/ath79/generic/base-files/etc/board.d/01_leds
@@ -298,6 +298,11 @@ kuwfi,c910)
 	ucidef_set_led_switch "lan1" "LAN1" "white:lan1" "switch0" "0x10"
 	ucidef_set_led_switch "lan2" "LAN2" "white:lan2" "switch0" "0x02"
 	;;
+longdata,aps256)
+	ucidef_set_led_switch "wan" "WAN" "blue:wan" "switch0" "0x20"
+	ucidef_set_led_switch "lan1" "LAN1" "blue:lan-1" "switch0" "0x04"
+	ucidef_set_led_switch "lan2" "LAN2" "blue:lan-2" "switch0" "0x02"
+	;;
 meraki,mr12|\
 tplink,cpe210-v2|\
 tplink,cpe210-v3)
diff --git a/target/linux/ath79/generic/base-files/etc/board.d/02_network b/target/linux/ath79/generic/base-files/etc/board.d/02_network
index c3de8bed7f..b1e5818567 100644
--- a/target/linux/ath79/generic/base-files/etc/board.d/02_network
+++ b/target/linux/ath79/generic/base-files/etc/board.d/02_network
@@ -419,6 +419,10 @@ ath79_setup_interfaces()
 		ucidef_add_switch "switch0" \
 			"0@eth0" "5:wan" "6@eth1" "4:lan"
 		;;
+	longdata,aps256)
+		ucidef_add_switch "switch0" \
+			"0@eth0" "1:lan:2" "2:lan:1" "5:wan"
+		;;
 	meraki,mr12)
 		ucidef_set_interface_lan "eth0"
 		ucidef_add_switch "switch0" \
diff --git a/target/linux/ath79/image/generic.mk b/target/linux/ath79/image/generic.mk
index 7f0a7b43de..9c74936053 100644
--- a/target/linux/ath79/image/generic.mk
+++ b/target/linux/ath79/image/generic.mk
@@ -2038,6 +2038,16 @@ define Device/librerouter_librerouter-v1
 endef
 TARGET_DEVICES += librerouter_librerouter-v1
 
+define Device/longdata_aps256
+  SOC := ar9344
+  DEVICE_VENDOR := LONGDATA
+  DEVICE_MODEL := APS256
+  DEVICE_PACKAGES := kmod-usb2
+  IMAGE_SIZE := 16192k
+  SUPPORTED_DEVICES += aps256
+endef
+TARGET_DEVICES += longdata_aps256
+
 define Device/meraki_mr12
   SOC := ar7242
   DEVICE_VENDOR := Meraki