ramips: add support for Netgear WAX202

Netgear WAX202 is an 802.11ax (Wi-Fi 6) router.

Specifications:
* SoC: MT7621A
* RAM: 512 MiB NT5CC256M16ER-EK
* Flash: NAND 128 MiB F59L1G81MB-25T
* Wi-Fi:
  * MT7915D: 2.4/5 GHz (DBDC)
* Ethernet: 4x 1GbE
  * Switch: SoC built-in
* USB: None
* UART: 115200 baud (labeled on board)

Load addresses (same as ipTIME AX2004M):
* stock
  * 0x80010000: FIT image
  * 0x81001000: kernel image -> entry
* OpenWrt
  * 0x80010000: FIT image
  * 0x82000000: uncompressed kernel+relocate image
  * 0x80001000: relocated kernel image -> entry

Installation:
* Flash the factory image through the stock web interface, or TFTP to
  the bootloader. NMRP can be used to TFTP without opening the case.
* Note that the bootloader accepts both encrypted and unencrypted
  images, while the stock web interface only accepts encrypted ones.

Revert to stock firmware:
* Flash the stock firmware to the bootloader using TFTP/NMRP.

References in WAX202 GPL source:
https://www.downloads.netgear.com/files/GPL/WAX202_V1.0.5.1_Source.rar

* openwrt/target/linux/ramips/dts/mt7621-ax-nand-wax202.dts
  DTS file for this device.

Signed-off-by: Wenli Looi <wlooi@ucalgary.ca>
(cherry picked from commit 0f068e7c4a83bcbf20c4e52a5f8a3f1fe2af2246)

1 files changed, 277 insertions, 0 deletions

diff --git a/target/linux/ramips/dts/mt7621_netgear_wax202.dts b/target/linux/ramips/dts/mt7621_netgear_wax202.dts
new file mode 100644
index 0000000000..fef8094256
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_netgear_wax202.dts
@@ -0,0 +1,277 @@
+// 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 = "netgear,wax202", "mediatek,mt7621-soc";
+	model = "Netgear WAX202";
+
+	aliases {
+		led-boot = &led_power_green;
+		led-failsafe = &led_power_orange;
+		led-running = &led_power_green;
+		led-upgrade = &led_power_orange;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 10 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_power_green: power_green {
+			label = "green:power";
+			gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
+		};
+
+		led_power_orange: power_orange {
+			label = "orange:power";
+			gpios = <&gpio 17 GPIO_ACTIVE_HIGH>;
+		};
+
+		led_net_green: net_green {
+			label = "green:net";
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+		};
+
+		led_net_blue: net_blue {
+			label = "blue:net";
+			gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
+		};
+
+		led_lan1_green: lan1_green {
+			label = "green:lan1";
+			gpios = <&switch0 3 GPIO_ACTIVE_LOW>;
+		};
+
+		led_lan1_orange: lan1_orange {
+			label = "orange:lan1";
+			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
+		};
+
+		led_lan2_green: lan2_green {
+			label = "green:lan2";
+			gpios = <&switch0 6 GPIO_ACTIVE_LOW>;
+		};
+
+		led_lan2_orange: lan2_orange {
+			label = "orange:lan2";
+			gpios = <&gpio 13 GPIO_ACTIVE_LOW>;
+		};
+
+		led_lan3_green: lan3_green {
+			label = "green:lan3";
+			gpios = <&switch0 12 GPIO_ACTIVE_LOW>;
+		};
+
+		led_lan3_orange: lan3_orange {
+			label = "orange:lan3";
+			gpios = <&gpio 14 GPIO_ACTIVE_LOW>;
+		};
+
+		led_wifi2g_green: wifi2g_green {
+			label = "green:wifi2g";
+			gpios = <&gpio 12 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy0radio";
+		};
+
+		led_wifi2g_blue: wifi2g_blue {
+			label = "blue:wifi2g";
+			gpios = <&gpio 7 GPIO_ACTIVE_LOW>;
+		};
+
+		led_wifi5g_green: wifi5g_green {
+			label = "green:wifi5g";
+			gpios = <&gpio 8 GPIO_ACTIVE_LOW>;
+			linux,default-trigger = "phy1radio";
+		};
+
+		led_wifi5g_blue: wifi5g_blue {
+			label = "blue:wifi5g";
+			gpios = <&gpio 6 GPIO_ACTIVE_LOW>;
+		};
+	};
+};
+
+&nand {
+	status = "okay";
+
+	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;
+		};
+
+		partition@180000 {
+			label = "firmware";
+			reg = <0x180000 0x2600000>;
+
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "kernel";
+				reg = <0x0 0x400000>;
+			};
+
+			partition@400000 {
+				label = "ubi";
+				reg = <0x400000 0x2200000>;
+			};
+		};
+
+		partition@2780000 {
+			label = "firmware_backup";
+			reg = <0x2780000 0x2600000>;
+			read-only;
+		};
+
+		partition@4d80000 {
+			label = "CFG";
+			reg = <0x4d80000 0x800000>;
+			read-only;
+		};
+
+		partition@5580000 {
+			label = "RAE";
+			reg = <0x5580000 0x400000>;
+			read-only;
+		};
+
+		partition@5980000 {
+			label = "POT";
+			reg = <0x5980000 0x100000>;
+			read-only;
+		};
+
+		partition@5a80000 {
+			label = "Language";
+			reg = <0x5a80000 0x400000>;
+			read-only;
+		};
+
+		partition@5e80000 {
+			label = "Traffic";
+			reg = <0x5e80000 0x200000>;
+			read-only;
+		};
+
+		partition@6080000 {
+			label = "Cert";
+			reg = <0x6080000 0x100000>;
+			read-only;
+		};
+
+		partition@6180000 {
+			label = "NTGRcryptK";
+			reg = <0x6180000 0x100000>;
+			read-only;
+		};
+
+		partition@6280000 {
+			label = "NTGRcryptD";
+			reg = <0x6280000 0x500000>;
+			read-only;
+		};
+
+		partition@6780000 {
+			label = "LOG";
+			reg = <0x6780000 0x100000>;
+			read-only;
+		};
+
+		partition@6880000 {
+			label = "User_data";
+			reg = <0x6880000 0x640000>;
+			read-only;
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie1 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x0>;
+	};
+};
+
+&pcie2 {
+	status = "disabled";
+};
+
+&state_default {
+	gpio {
+		groups = "uart3", "uart2", "jtag", "wdt";
+		function = "gpio";
+	};
+};
+
+&switch0 {
+	gpio-controller;
+	#gpio-cells = <2>;
+
+	ports {
+		port@0 {
+			status = "okay";
+			label = "wan";
+		};
+
+		port@1 {
+			status = "okay";
+			label = "lan1";
+		};
+
+		port@2 {
+			status = "okay";
+			label = "lan2";
+		};
+
+		/* port@3 is not used */
+
+		port@4 {
+			status = "okay";
+			label = "lan3";
+		};
+	};
+};
+
+&xhci {
+	status = "disabled";
+};