mediatek: add support for TOTOLINK A8000RU

Specifications:
- SoC: MT7622
- RAM: 512MB
- Flash: MX35LF1GE4AB 128MB SPI NAND
- Ethernet: RTL8367S 5x1GbE
- WiFi: 2.4G: MT7622 5G: MT7615N x2
- Other ports: USB3.0 x1

Flash instruction:
*important*: upgrade vendor firmware to at least V7.1cu.643_B20200521
1. hold the reset button and power on the device. wait for about 10s
   before releasing the reset button.
2. upload sysupgrade.bin via u-boot recovery page on http://192.168.1.1

Signed-off-by: Chuanhong Guo <gch981213@gmail.com>

3 files changed, 345 insertions, 0 deletions

diff --git a/target/linux/mediatek/dts/mt7622-totolink-a8000ru.dts b/target/linux/mediatek/dts/mt7622-totolink-a8000ru.dts
new file mode 100644
index 0000000000..0386865cc2
--- /dev/null
+++ b/target/linux/mediatek/dts/mt7622-totolink-a8000ru.dts
@@ -0,0 +1,329 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR MIT)
+
+/dts-v1/;
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/gpio/gpio.h>
+
+#include "mt7622.dtsi"
+#include "mt6380.dtsi"
+
+/ {
+	model = "TOTOLINK A8000RU";
+	compatible = "totolink,a8000ru", "mediatek,mt7622";
+
+	aliases {
+		label-mac-device = &gmac0;
+		led-boot = &led_status;
+		led-failsafe = &led_status;
+		led-running = &led_status;
+		led-upgrade = &led_status;
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+		bootargs = "earlycon=uart8250,mmio32,0x11002000 swiotlb=512";
+	};
+
+	cpus {
+		cpu@0 {
+			proc-supply = <&mt6380_vcpu_reg>;
+			sram-supply = <&mt6380_vm_reg>;
+		};
+
+		cpu@1 {
+			proc-supply = <&mt6380_vcpu_reg>;
+			sram-supply = <&mt6380_vm_reg>;
+		};
+	};
+
+	gpio-keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			linux,code = <KEY_RESTART>;
+			gpios = <&pio 0 GPIO_ACTIVE_LOW>;
+		};
+
+		wps {
+			label = "wps";
+			linux,code = <KEY_WPS_BUTTON>;
+			gpios = <&pio 102 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	gpio-leds {
+		compatible = "gpio-leds";
+
+		led_status: status_red {
+			label = "red:status";
+			gpios = <&pio 81 GPIO_ACTIVE_LOW>;
+			default-state = "on";
+		};
+	};
+
+	reg_1p8v: regulator-1p8v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-1.8V";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		regulator-always-on;
+	};
+
+	reg_3p3v: regulator-3p3v {
+		compatible = "regulator-fixed";
+		regulator-name = "fixed-3.3V";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		regulator-boot-on;
+		regulator-always-on;
+	};
+
+	rtkgsw: rtkgsw@0 {
+		compatible = "mediatek,rtk-gsw";
+		mediatek,ethsys = <&ethsys>;
+		mediatek,mdio = <&mdio>;
+		mediatek,reset-pin = <&pio 54 0>;
+		status = "okay";
+	};
+};
+
+&pcie0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie0_pins>;
+	status = "okay";
+};
+
+&slot0 {
+	mt7615@0,0 {
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x5000>;
+		ieee80211-freq-limit = <5490000 6000000>;
+	};
+};
+
+&pcie1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pcie1_pins>;
+	status = "okay";
+};
+
+&slot1 {
+	mt7615@0,0 {
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x10000>;
+		ieee80211-freq-limit = <5000000 5490000>;
+	};
+};
+
+&pio {
+	eth_pins: eth-pins {
+		mux {
+			function = "eth";
+			groups = "mdc_mdio", "rgmii_via_gmac2";
+		};
+	};
+
+	pcie0_pins: pcie0-pins {
+		mux {
+			function = "pcie";
+			groups = "pcie0_pad_perst",
+				 "pcie0_1_waken",
+				 "pcie0_1_clkreq";
+		};
+	};
+
+	pcie1_pins: pcie1-pins {
+		mux {
+			function = "pcie";
+			groups = "pcie1_pad_perst",
+				 "pcie1_0_waken",
+				 "pcie1_0_clkreq";
+		};
+	};
+
+	pmic_bus_pins: pmic-bus-pins {
+		mux {
+			function = "pmic";
+			groups = "pmic_bus";
+		};
+	};
+
+	/* serial NAND is shared pin with SPI-NOR */
+	serial_nand_pins: serial-nand-pins {
+		mux {
+			function = "flash";
+			groups = "snfi";
+		};
+	};
+
+	uart0_pins: uart0-pins {
+		mux {
+			function = "uart";
+			groups = "uart0_0_tx_rx" ;
+		};
+	};
+
+	watchdog_pins: watchdog-pins {
+		mux {
+			function = "watchdog";
+			groups = "watchdog";
+		};
+	};
+
+	epa_elna_pins: epa-elna-pins {
+		mux {
+			function = "antsel";
+			groups = "antsel0", "antsel1", "antsel2", "antsel3",
+				"antsel4", "antsel5", "antsel6", "antsel7",
+				"antsel8", "antsel9", "antsel12", "antsel13",
+				"antsel14", "antsel15", "antsel16", "antsel17";
+		};
+	};
+};
+
+&eth {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&eth_pins>;
+
+	gmac0: mac@0 {
+		compatible = "mediatek,eth-mac";
+		reg = <0>;
+		nvmem-cells = <&macaddr_factory_2a>;
+		nvmem-cell-names = "mac-address";
+		phy-connection-type = "2500base-x";
+		fixed-link {
+			speed = <2500>;
+			full-duplex;
+			pause;
+		};
+	};
+
+	gmac1: mac@1 {
+		compatible = "mediatek,eth-mac";
+		reg = <1>;
+		phy-mode = "rgmii";
+		nvmem-cells = <&macaddr_factory_24>;
+		nvmem-cell-names = "mac-address";
+		fixed-link {
+			speed = <1000>;
+			full-duplex;
+			pause;
+		};
+	};
+
+	mdio: mdio-bus {
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+};
+
+&pwrap {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pmic_bus_pins>;
+	status = "okay";
+};
+
+&snand {
+	mediatek,quad-spi;
+	pinctrl-names = "default";
+	pinctrl-0 = <&serial_nand_pins>;
+	status = "okay";
+	mediatek,bmt-v2;
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		partition@0 {
+			label = "Preloader";
+			reg = <0x0 0x80000>;
+			read-only;
+		};
+
+		partition@80000 {
+			label = "ATF";
+			reg = <0x80000 0x40000>;
+			read-only;
+		};
+
+		partition@c0000 {
+			label = "u-boot";
+			reg = <0xc0000 0x80000>;
+			read-only;
+		};
+
+		partition@140000 {
+			label = "u-boot-env";
+			reg = <0x140000 0x80000>;
+			read-only;
+		};
+
+		factory: partition@1c0000 {
+			label = "factory";
+			reg = <0x1c0000 0x40000>;
+			read-only;
+		};
+
+		partition@200000 {
+			label = "ubi";
+			reg = <0x200000 0x6400000>;
+		};
+
+		partition@6600000 {
+			label = "User_data";
+			reg = <0x6600000 0x100000>;
+		};
+
+		/* size of this partition varies due to BMT & bad blocks. */
+		partition@6700000 {
+			label = "reserved";
+			reg = <0x6700000 0>;
+		};
+	};
+};
+
+&factory {
+	compatible = "nvmem-cells";
+	#address-cells = <1>;
+	#size-cells = <1>;
+
+	macaddr_factory_24: macaddr@24 {
+		reg = <0x24 0x6>;
+	};
+
+	macaddr_factory_2a: macaddr@2a {
+		reg = <0x2a 0x6>;
+	};
+};
+
+&ssusb {
+	vusb33-supply = <&reg_3p3v>;
+	status = "okay";
+};
+
+&u3phy {
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_pins>;
+	status = "okay";
+};
+
+&watchdog {
+	pinctrl-names = "default";
+	pinctrl-0 = <&watchdog_pins>;
+	status = "okay";
+};
+
+&wmac {
+	pinctrl-names = "default";
+	pinctrl-0 = <&epa_elna_pins>;
+	mediatek,mtd-eeprom = <&factory 0x0>;
+	status = "okay";
+};
diff --git a/target/linux/mediatek/image/mt7622.mk b/target/linux/mediatek/image/mt7622.mk
index 6077e623ff..795bb3fc76 100644
--- a/target/linux/mediatek/image/mt7622.mk
+++ b/target/linux/mediatek/image/mt7622.mk
@@ -202,6 +202,16 @@ define Device/mediatek_mt7622-rfb1-ubi
 endef
 TARGET_DEVICES += mediatek_mt7622-rfb1-ubi
 
+define Device/totolink_a8000ru
+  DEVICE_VENDOR := TOTOLINK
+  DEVICE_MODEL := A8000RU
+  DEVICE_DTS := mt7622-totolink-a8000ru
+  DEVICE_DTS_DIR := ../dts
+  DEVICE_PACKAGES := swconfig
+  IMAGE/sysupgrade.bin := sysupgrade-tar | append-metadata
+endef
+TARGET_DEVICES += totolink_a8000ru
+
 define Device/ubnt_unifi-6-lr
   DEVICE_VENDOR := Ubiquiti
   DEVICE_MODEL := UniFi 6 LR
diff --git a/target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh b/target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh
index cdae06e630..0cdd8df8f9 100755
--- a/target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh
+++ b/target/linux/mediatek/mt7622/base-files/lib/upgrade/platform.sh
@@ -54,6 +54,9 @@ platform_do_upgrade() {
 		fi
 		default_do_upgrade "$1"
 		;;
+	totolink,a8000ru)
+		nand_do_upgrade "$1"
+		;;
 	*)
 		default_do_upgrade "$1"
 		;;
@@ -72,6 +75,9 @@ platform_check_image() {
 	buffalo,wsr-2533dhp2)
 		buffalo_check_image "$board" "$magic" "$1" || return 1
 		;;
+	totolink,a8000ru)
+		nand_do_platform_check "$board" "$1"
+		;;
 	*)
 		[ "$magic" != "d00dfeed" ] && {
 			echo "Invalid image type."