mediatek: add Huasifei WH3000R NAND support

**Huasifei WH3000R NAND**
Wi-Fi 6 router based on MediaTek MT7981B SoC.
MT7981B+MT7976CN+MT7531AE

**Specifications**
SoC: Filogic 820 MT7981B (1.3GHz)
RAM: DDR3 512MB
Flash: 256MiB Winbond SPI NAND
WiFi: MT7976C: 2.4GHz 2x2, 5GHz 2x2
Ethernet: MT7531: 3x 1GbE LAN + 1x 1GbE WAN
USB: 1x USB 3.0 port
Two buttons: reset and mesh
LEDs: RGB (red, green, blue together)
UART: 3.3V, TX, RX, GND / 115200 8N1
DC power interface

+---------+-------------------+--------------------------+
|         | MAC               | Algorithm                |
+---------+-------------------+--------------------------+
| LAN     | 58:23:BC:xx:xx:x2 | label+1                  |
| WAN     | 58:23:BC:xx:xx:x1 | label+0 (eeprom)         |
| WLAN 2g | 58:23:BC:xx:xx:x3 | label+2                  |
| WLAN 5g | 58:23:BC:xx:xx:x4 | label+3                  |
+---------+-------------------+--------------------------+
Since it's convenient for the users to check and tell MAC
to their internet providers from the router label, we set
WAN as a base MAC located at 'Factory', 0x4.
Discussed this with the vendor.

**Installation via U-Boot rescue**
1. Set static IP 192.168.1.2 on your computer and default route as 192.168.1.1
2. Connect to the LAN port and hold the reset button while booting the device.
3. Wait for the LED to blink 5 times, and release the reset button.
4. Open U-boot web page on your browser at http://192.168.1.1
5. Select the OpenWrt sysupgrade image, upload it, and start the upgrade.
6. Wait for the router to flash the new firmware.
7. Wait for the router to reboot itself.

**Installation via sysupgrade**
Just flash sysupgrade file via
[LuCI upgrade page](http://192.168.1.1/cgi-bin/luci/admin/system/flash)
without saving the settings.

**Installation via SSH**
Upload the file to the router `/tmp` directory, `ssh root@192.168.1.1`
and issue a command:
```
sysupgrade -n /tmp/openwrt-mediatek-filogic-huasifei_wh3000r-nand-squashfs-sysupgrade.bin
```

Signed-off-by: Fil Dunsky <filipp.dunsky@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/23156
(cherry picked from commit b2795a7908204f7e4dfb3a173d0cffaecd821fe1)
Link: https://github.com/openwrt/openwrt/pull/23524
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>

5 files changed, 311 insertions, 1 deletions

diff --git a/target/linux/mediatek/dts/mt7981b-huasifei-wh3000r-nand.dts b/target/linux/mediatek/dts/mt7981b-huasifei-wh3000r-nand.dts
new file mode 100644
index 0000000000..f999ab516f
--- /dev/null
+++ b/target/linux/mediatek/dts/mt7981b-huasifei-wh3000r-nand.dts
@@ -0,0 +1,292 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/dts-v1/;
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+#include "mt7981b.dtsi"
+
+/ {
+	model = "Huasifei WH3000R NAND";
+	compatible = "huasifei,wh3000r-nand", "mediatek,mt7981";
+
+	aliases {
+		label-mac-device = &gmac1;
+
+		led-boot = &led_power;
+		led-failsafe = &led_power;
+		led-running = &led_status;
+		led-upgrade = &led_power;
+
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	memory {
+		reg = <0 0x40000000 0 0x20000000>;
+		device_type = "memory";
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		button-mesh {
+			label = "mesh";
+			linux,code = <KEY_RFKILL>;
+			gpios = <&pio 0 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+
+		button-reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&pio 1 GPIO_ACTIVE_LOW>;
+			debounce-interval = <60>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		led_power: led_power {
+			function = LED_FUNCTION_POWER;
+			color = <LED_COLOR_ID_RED>;
+			gpios = <&pio 9 GPIO_ACTIVE_LOW>;
+		};
+
+		led_status: led_status {
+			function = LED_FUNCTION_STATUS;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&pio 10 GPIO_ACTIVE_LOW>;
+		};
+
+		led_internet {
+			function = LED_FUNCTION_WAN_ONLINE;
+			color = <LED_COLOR_ID_BLUE>;
+			gpios = <&pio 11 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&eth {
+	status = "okay";
+
+	gmac0: mac@0 {
+		compatible = "mediatek,eth-mac";
+		reg = <0>;
+		phy-mode = "2500base-x";
+		nvmem-cells = <&macaddr_factory_4 1>;
+		nvmem-cell-names = "mac-address";
+
+		fixed-link {
+			speed = <2500>;
+			full-duplex;
+			pause;
+		};
+	};
+
+	gmac1: mac@1 {
+		compatible = "mediatek,eth-mac";
+		reg = <1>;
+		phy-mode = "gmii";
+		nvmem-cells = <&macaddr_factory_4 0>;
+		nvmem-cell-names = "mac-address";
+		phy-handle = <&phy0>;
+		label = "wan";
+	};
+
+	mdio: mdio-bus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		phy0: ethernet-phy@0 {
+			compatible = "ethernet-phy-id03a2.9461";
+			reg = <0>;
+			phy-mode = "gmii";
+			nvmem-cells = <&phy_calibration>;
+			nvmem-cell-names = "phy-cal-data";
+		};
+
+		switch: switch@1f {
+			compatible = "mediatek,mt7531";
+			reg = <0x1f>;
+			reset-gpios = <&pio 39 GPIO_ACTIVE_HIGH>;
+			interrupt-controller;
+			#interrupt-cells = <1>;
+			interrupt-parent = <&pio>;
+			interrupts = <38 IRQ_TYPE_LEVEL_HIGH>;
+		};
+	};
+};
+
+&spi0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi0_flash_pins>;
+	status = "okay";
+
+	spi_nand@0 {
+		compatible = "spi-nand";
+		reg = <0>;
+
+		spi-max-frequency = <52000000>;
+		spi-tx-bus-width = <4>;
+		spi-rx-bus-width = <4>;
+
+		spi-cal-enable;
+		spi-cal-mode = "read-data";
+		spi-cal-datalen = <7>;
+		spi-cal-data = /bits/ 8 <0x53 0x50 0x49 0x4e 0x41 0x4e 0x44>;
+		spi-cal-addrlen = <5>;
+		spi-cal-addr = /bits/ 32 <0x0 0x0 0x0 0x0 0x0>;
+
+		mediatek,nmbm;
+		mediatek,bmt-max-ratio = <1>;
+		mediatek,bmt-max-reserved-blocks = <64>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "BL2";
+				reg = <0x0 0x100000>;
+				read-only;
+			};
+
+			partition@100000 {
+				label = "u-boot-env";
+				reg = <0x100000 0x80000>;
+				read-only;
+			};
+
+			partition@180000 {
+				label = "Factory";
+				reg = <0x180000 0x200000>;
+				read-only;
+
+				nvmem-layout {
+					compatible = "fixed-layout";
+					#address-cells = <1>;
+					#size-cells = <1>;
+
+					eeprom_factory_0: eeprom@0 {
+						reg = <0x0 0x1000>;
+					};
+
+					macaddr_factory_4: macaddr@4 {
+						compatible = "mac-base";
+						reg = <0x4 0x6>;
+						#nvmem-cell-cells = <1>;
+					};
+				};
+			};
+
+			partition@380000 {
+				label = "FIP";
+				reg = <0x380000 0x200000>;
+				read-only;
+			};
+
+			partition@580000 {
+				label = "ubi";
+				reg = <0x580000 0xe280000>;
+			};
+		};
+	};
+};
+
+&pio {
+	spi0_flash_pins: spi0-pins {
+		mux {
+			function = "spi";
+			groups = "spi0", "spi0_wp_hold";
+		};
+
+		conf-pu {
+			pins = "SPI0_CS", "SPI0_HOLD", "SPI0_WP";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
+		};
+
+		conf-pd {
+			pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO";
+			drive-strength = <MTK_DRIVE_8mA>;
+			bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
+		};
+	};
+};
+
+&switch {
+	ports {
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		port@0 {
+			reg = <0>;
+			label = "lan1";
+		};
+
+		port@1 {
+			reg = <1>;
+			label = "lan2";
+		};
+
+		port@2 {
+			reg = <2>;
+			label = "lan3";
+		};
+
+		port@6 {
+			reg = <6>;
+			ethernet = <&gmac0>;
+			phy-mode = "2500base-x";
+
+			fixed-link {
+				speed = <2500>;
+				full-duplex;
+				pause;
+			};
+		};
+	};
+};
+
+&usb_phy {
+	status = "okay";
+};
+
+&uart0 {
+	status = "okay";
+};
+
+&watchdog {
+	status = "okay";
+};
+
+&wifi {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+	nvmem-cells = <&eeprom_factory_0>;
+	nvmem-cell-names = "eeprom";
+
+	band@0 {
+		reg = <0>;
+		nvmem-cells = <&macaddr_factory_4 2>;
+		nvmem-cell-names = "mac-address";
+	};
+
+	band@1 {
+		reg = <1>;
+		nvmem-cells = <&macaddr_factory_4 3>;
+		nvmem-cell-names = "mac-address";
+	};
+};
+
+&xhci {
+	status = "okay";
+};
diff --git a/target/linux/mediatek/filogic/base-files/etc/board.d/01_leds b/target/linux/mediatek/filogic/base-files/etc/board.d/01_leds
index 7d1a2d3cf3..33dc2216dc 100644
--- a/target/linux/mediatek/filogic/base-files/etc/board.d/01_leds
+++ b/target/linux/mediatek/filogic/base-files/etc/board.d/01_leds
@@ -114,6 +114,9 @@ glinet,gl-xe3000)
 huasifei,wh3000)
 	ucidef_set_led_netdev "wan" "WAN" "red:wan" "eth1" "link tx rx"
 	;;
+huasifei,wh3000r-nand)
+	ucidef_set_led_netdev "wan" "WAN" "blue:wan-online" "wan" "link"
+	;;
 iptime,ax3000q)
 	ucidef_set_led_netdev "wan" "WAN" "amber:wan" "wan" "link tx rx"
 	;;
diff --git a/target/linux/mediatek/filogic/base-files/etc/board.d/02_network b/target/linux/mediatek/filogic/base-files/etc/board.d/02_network
index 4bc441a924..520b16296d 100644
--- a/target/linux/mediatek/filogic/base-files/etc/board.d/02_network
+++ b/target/linux/mediatek/filogic/base-files/etc/board.d/02_network
@@ -52,6 +52,7 @@ mediatek_setup_interfaces()
 	creatlentem,clt-r30b1|\
 	creatlentem,clt-r30b1-112m|\
 	cudy,wr3000-v1|\
+	huasifei,wh3000r-nand|\
 	jcg,q30-pro|\
 	keenetic,kn-3711|\
 	keenetic,kn-3811|\
diff --git a/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh b/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
index 88070f7f24..49562a0def 100644
--- a/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mediatek/filogic/base-files/lib/upgrade/platform.sh
@@ -167,7 +167,8 @@ platform_do_upgrade() {
 	buffalo,wsr-6000ax8|\
 	cudy,wr3000h-v1|\
 	cudy,wr3000p-v1|\
-	huasifei,wh3000-pro-nand)
+	huasifei,wh3000-pro-nand|\
+	huasifei,wh3000r-nand)
 		CI_UBIPART="ubi"
 		nand_do_upgrade "$1"
 		;;
diff --git a/target/linux/mediatek/image/filogic.mk b/target/linux/mediatek/image/filogic.mk
index 96b7b9c9a0..3cb2bbbdaa 100644
--- a/target/linux/mediatek/image/filogic.mk
+++ b/target/linux/mediatek/image/filogic.mk
@@ -1759,6 +1759,19 @@ define Device/huasifei_wh3000-pro-nand
 endef
 TARGET_DEVICES += huasifei_wh3000-pro-nand
 
+define Device/huasifei_wh3000r-nand
+  DEVICE_VENDOR := Huasifei
+  DEVICE_MODEL := WH3000R
+  DEVICE_VARIANT := NAND
+  DEVICE_DTS := mt7981b-huasifei-wh3000r-nand
+  DEVICE_DTS_DIR := ../dts
+  IMAGE_SIZE := 231936k
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+  DEVICE_PACKAGES := kmod-mt7915e kmod-mt7981-firmware mt7981-wo-firmware \
+	kmod-usb3
+endef
+TARGET_DEVICES += huasifei_wh3000r-nand
+
 define Device/imou_hx21
   DEVICE_VENDOR := Imou
   DEVICE_MODEL := HX21