ramips: add support for D-Link DAP-X1860 A1

The DAP-X1860 is a wall-plug AX1800 repeater.

Specifications:
- MT7621, 256 MiB RAM, 128 MiB SPI NAND
- MT7915 + MT7975 2x2 802.11ax (DBDC)
- Ethernet: 1 port 10/100/1000
- LED RSSI bargraph (2x green, 1x red/orange), status
  and RSSI LEDs are incorrectly populated red/orange
  (should be red/green according to documentation)

Installation:
- Keep reset button pressed during plug-in
- Web Recovery Updater is at 192.168.0.50
- Upload factory.bin, confirm flashing
  (seems to work best with Chromium-based browsers)

Revert to OEM firmware:
- tar -xvf DAP-X1860_RevA_Firmware_101b94.bin
- openssl enc -d -md md5 -aes-256-cbc -in FWImage.st2 \
  -out FWImage.st1 -k MB0dBx62oXJXDvt12lETWQ==
- tar -xvf FWImage.st1
- flash kernel_DAP-X1860.bin via Recovery

Signed-off-by: Sebastian Schaper <openwrt@sebastianschaper.net>
(cherry picked from commit 3c31f6b521bb5fc49e222a8f2bcd454b73452a0e)

6 files changed, 234 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/mt7621_dlink_dap-x1860-a1.dts b/target/linux/ramips/dts/mt7621_dlink_dap-x1860-a1.dts
new file mode 100644
index 0000000000..edc1c6544c
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_dlink_dap-x1860-a1.dts
@@ -0,0 +1,197 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "dlink,dap-x1860-a1", "mediatek,mt7621-soc";
+	model = "D-Link DAP-X1860 A1";
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	aliases {
+		label-mac-device = &gmac0;
+		led-boot = &led_power_orange;
+		led-failsafe = &led_power_red;
+		led-running = &led_power_orange;
+		led-upgrade = &led_power_red;
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		wps {
+			label = "wps";
+			gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_WPS_BUTTON>;
+		};
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 6 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power_red: power_red {
+			label = "red:power";
+			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
+		};
+
+		led_power_orange: power_orange {
+			label = "orange:power";
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+
+		rssihigh {
+			label = "green:rssihigh";
+			gpios = <&gpio 22 GPIO_ACTIVE_LOW>;
+		};
+
+		rssimedium {
+			label = "green:rssimedium";
+			gpios = <&gpio 23 GPIO_ACTIVE_LOW>;
+		};
+
+		rssilow_orange {
+			label = "orange:rssilow";
+			gpios = <&gpio 26 GPIO_ACTIVE_LOW>;
+		};
+
+		rssilow_green {
+			label = "green:rssilow";
+			gpios = <&gpio 27 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	virtual_flash {
+		compatible = "mtd-concat";
+
+		devices = <&fwconcat0 &fwconcat1>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "ubi";
+				reg = <0x0 0x0>;
+			};
+		};
+	};
+};
+
+&nand {
+	status = "okay";
+
+	mediatek,nmbm;
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "bootloader";
+			reg = <0x0 0x80000>;
+			read-only;
+		};
+
+		partition@80000 {
+			label = "config";
+			reg = <0x80000 0x80000>;
+			read-only;
+		};
+
+		factory: partition@100000 {
+			label = "factory";
+			reg = <0x100000 0x80000>;
+			read-only;
+
+			compatible = "nvmem-cells";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			macaddr_factory_4: macaddr@4 {
+				reg = <0x4 0x6>;
+			};
+		};
+
+		partition@180000 {
+			label = "kernel";
+			reg = <0x180000 0x0800000>;
+		};
+
+		fwconcat0: partition@980000 {
+			label = "fwconcat0";
+			reg = <0x980000 0x2c00000>;
+		};
+
+		partition@3580000 {
+			label = "manufacture";
+			reg = <0x3580000 0x400000>;
+			read-only;
+		};
+
+		partition@3980000 {
+			label = "storage";
+			reg = <0x3980000 0x680000>;
+			read-only;
+		};
+
+		fwconcat1: partition@4000000 {
+			label = "fwconcat1";
+			reg = <0x4000000 0x3800000>;
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie1 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x0>;
+		mediatek,disable-radar-background;
+	};
+};
+
+&ethernet {
+	pinctrl-0 = <&mdio_pins>, <&rgmii1_pins>;
+};
+
+&gmac0 {
+	nvmem-cells = <&macaddr_factory_4>;
+	nvmem-cell-names = "mac-address";
+};
+
+&switch0 {
+	gpio-controller;
+	#gpio-cells = <2>;
+
+	ports {
+		port@0 {
+			status = "okay";
+			label = "lan";
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "uart2";
+		function = "gpio";
+	};
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 71e616d101..c3e2291a9d 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -354,6 +354,27 @@ define Device/cudy_x6
 endef
 TARGET_DEVICES += cudy_x6
 
+define Device/dlink_dap-x1860-a1
+  $(Device/dsa-migration)
+  IMAGE_SIZE := 53248k
+  DEVICE_VENDOR := D-Link
+  DEVICE_MODEL := DAP-X1860
+  DEVICE_VARIANT := A1
+  UBINIZE_OPTS := -E 5
+  BLOCKSIZE := 128k
+  PAGESIZE := 2048
+  KERNEL_SIZE := 8192k
+  KERNEL_LOADADDR := 0x82000000
+  KERNEL := kernel-bin | relocate-kernel 0x80001000 | lzma | \
+	fit lzma $$(KDIR)/image-$$(firstword $$(DEVICE_DTS)).dtb
+  IMAGES += factory.bin
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+  IMAGE/factory.bin := append-kernel | pad-to $$(KERNEL_SIZE) | append-ubi | \
+	check-size | elx-header 011b0060 8844A2D168B45A2D
+  DEVICE_PACKAGES := kmod-mt7915e rssileds
+endef
+TARGET_DEVICES += dlink_dap-x1860-a1
+
 define Device/dlink_dir-8xx-a1
   $(Device/dsa-migration)
   IMAGE_SIZE := 16000k
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
index c7aeabb0fc..5f1e126da0 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
@@ -37,6 +37,13 @@ jcg,y2|\
 xzwifi,creativebox-v1)
 	ucidef_set_led_netdev "internet" "internet" "blue:internet" "wan"
 	;;
+dlink,dap-x1860-a1)
+	ucidef_set_rssimon "wlan1" "200000" "1"
+	ucidef_set_led_rssi "rssilow" "RSSILOW" "orange:rssilow" "wlan1" "1" "25"
+	ucidef_set_led_rssi "rssimediumlow" "RSSIMEDIUMLOW" "green:rssilow" "wlan1" "26" "100"
+	ucidef_set_led_rssi "rssimediumhigh" "RSSIMEDIUMHIGH" "green:rssimedium" "wlan1" "51" "100"
+	ucidef_set_led_rssi "rssihigh" "RSSIHIGH" "green:rssihigh" "wlan1" "76" "100"
+	;;
 dlink,dir-1960-a1|\
 dlink,dir-2640-a1|\
 dlink,dir-2660-a1)
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
index e05f712e92..afd4a3710c 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -9,6 +9,7 @@ ramips_setup_interfaces()
 
 	case $board in
 	ampedwireless,ally-00x19k|\
+	dlink,dap-x1860-a1|\
 	edimax,re23s|\
 	mikrotik,routerboard-m11g|\
 	netgear,ex6150|\
diff --git a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
index 78c5d248f9..d8c9512bb7 100644
--- a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
+++ b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
@@ -22,6 +22,13 @@ case "$board" in
 		hw_mac_addr="$(mtd_get_mac_binary factory 0x4)"
 		macaddr_add $hw_mac_addr "$PHYNBR" > /sys${DEVPATH}/macaddress
 		;;
+	dlink,dap-x1860-a1)
+		hw_mac_addr="$(mtd_get_mac_binary factory 0x4)"
+		[ "$PHYNBR" = "0" ] && \
+			macaddr_add $hw_mac_addr 1 > /sys${DEVPATH}/macaddress
+		[ "$PHYNBR" = "1" ] && \
+			macaddr_add $hw_mac_addr 4 > /sys${DEVPATH}/macaddress
+		;;
 	dlink,dir-853-a3)
 		[ "$PHYNBR" = "0" ] && \
 			macaddr_setbit_la "$(mtd_get_mac_binary factory 0xe000)" \
diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
index 6cfc852c11..4a6706e07a 100755
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -55,6 +55,7 @@ platform_do_upgrade() {
 	asus,rt-ac85p|\
 	asus,rt-ax53u|\
 	beeline,smartbox-flash|\
+	dlink,dap-x1860-a1|\
 	dlink,dir-1960-a1|\
 	dlink,dir-2640-a1|\
 	dlink,dir-2660-a1|\