ramips: add support for Telco Electronics X1

Hardware:
SoC:   MT7621
DRAM:  256MB DDR3
Flash: 16MB SPI-NOR
WiFi:  2.4GHz: MT7603 @ PCIe0
WiFi:  5.8GHz: MT7612 @ PCIe1
Modem: Sierra Wireless MC74xx

Interfaces:
GBE RJ45 x5
mPCIe    x2
UART     x1
I2C      x1
JTAG     x1
UIM      x1
LEDs     x6

Flash instructions:
Flash from within the factory bootloader, firmware web interface or CLI using
sysupgrade -F -n

Signed-off-by: Nicholas Smith <mips171@icloud.com>

target/linux/ramips/base-files/etc/board.d/02_network

@@ -119,6 +119,7 @@ ramips_setup_interfaces()
 	rt-n12p|\
 	sap-g3200u3|\
 	sk-wb8|\
+	telco-electronics,x1|\
 	unielec,u7621-06-256m-16m|\
 	unielec,u7621-06-512m-64m|\
 	vr500|\

target/linux/ramips/base-files/etc/board.d/03_gpio_switches

@@ -22,6 +22,9 @@ head-weblink,hdrm200)
 mikrotik,rb750gr3)
 	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "17"
 	;;
+telco-electronics,x1)
+	ucidef_add_gpio_switch "modem_reset" "Modem Reset" "16"
+	;;
 ubnt-erx)
 	ucidef_add_gpio_switch "poe_passthrough" "PoE Passthrough" "0"
 	;;

target/linux/ramips/dts/Telco-Electronics-X1.dts

@@ -0,0 +1,172 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+/dts-v1/;
+
+#include "mt7621.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+	compatible = "telco-electronics,x1", "mediatek,mt7621-soc";
+	model = "Telco Electronics X1";
+
+	aliases {
+		led-boot = &system_led;
+		led-failsafe = &system_led;
+		led-running = &system_led;
+		led-upgrade = &system_led;
+	};
+
+	chosen {
+		bootargs = "console=ttyS0,115200";
+	};
+
+	keys {
+		compatible = "gpio-keys-polled";
+		poll-interval = <20>;
+
+		reset {
+			label = "reset";
+			gpios = <&gpio0 18 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		system_led: system {
+			label = "x1:green:system";
+			gpios = <&gpio0 26 GPIO_ACTIVE_LOW>;
+		};
+
+		modem_offline {
+			label = "x1:red:modem-offline";
+			gpios = <&gpio0 23 GPIO_ACTIVE_HIGH>;
+		};
+
+		modem_4g {
+			label = "x1:blue:modem-4g";
+			gpios = <&gpio0 24 GPIO_ACTIVE_LOW>;
+		};
+
+		modem_3g {
+			label = "x1:green:modem-3g";
+			gpios = <&gpio0 25 GPIO_ACTIVE_LOW>;
+		};
+
+		modem_rssi_lowest {
+			label = "x1:green:modem-rssi-lowest";
+			gpios = <&gpio0 27 GPIO_ACTIVE_LOW>;
+		};
+
+		modem_rssi_low {
+			label = "x1:green:modem-rssi-low";
+			gpios = <&gpio0 28 GPIO_ACTIVE_LOW>;
+		};
+
+		modem_rssi_medium {
+			label = "x1:green:modem-rssi-medium";
+			gpios = <&gpio0 29 GPIO_ACTIVE_LOW>;
+		};
+
+		modem_rssi_high {
+			label = "x1:green:modem-rssi-high";
+			gpios = <&gpio0 30 GPIO_ACTIVE_LOW>;
+		};
+
+		modem_rssi_highest {
+			label = "x1:green:modem-rssi-highest";
+			gpios = <&gpio0 31 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x10000000>;
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <14000000>;
+
+		partitions {
+			compatible = "fixed-partitions";
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			partition@0 {
+				label = "bootloader";
+				reg = <0x0 0x30000>;
+				read-only;
+			};
+
+			partition@30000 {
+				label = "config";
+				reg = <0x30000 0x10000>;
+				read-only;
+			};
+
+			factory: partition@40000 {
+				label = "factory";
+				reg = <0x40000 0x10000>;
+				read-only;
+			};
+
+			firmware: partition@50000 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x50000 0xfb0000>;
+			};
+		};
+	};
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&ethernet {
+	mtd-mac-address = <&factory 0xe006>;
+	mediatek,portmap = "llllw";
+};
+
+&pinctrl {
+	state_default: pinctrl0 {
+		gpio {
+			ralink,group = "jtag", "uart2", "wdt", "rgmii2";
+			ralink,function = "gpio";
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+
+	pcie0 {
+		wifi@0,0 {
+			compatible = "pci14c3,7603";
+			reg = <0x0000 0 0 0 0>;
+			mediatek,mtd-eeprom = <&factory 0x0000>;
+			ieee80211-freq-limit = <2400000 2500000>;
+		};
+	};
+
+	pcie1 {
+		wifi@0,0 {
+			compatible = "pci14c3,7662";
+			reg = <0x0000 0 0 0 0>;
+			mediatek,mtd-eeprom = <&factory 0x8000>;
+			ieee80211-freq-limit = <5000000 6000000>;
+			led {
+				led-sources = <2>;
+			};
+		};
+	};
+};

target/linux/ramips/image/mt7621.mk

@@ -435,6 +435,14 @@ define Device/sk-wb8
 endef
 TARGET_DEVICES += sk-wb8
 
+define Device/telco-electronics_x1
+  DTS := Telco-Electronics-X1
+  IMAGE_SIZE := 16064k
+  DEVICE_TITLE := Telco Electronics X1
+  DEVICE_PACKAGES := kmod-usb3 kmod-mt76 wpad-basic
+endef
+TARGET_DEVICES += telco-electronics_x1
+
 define Device/timecloud
   DTS := Timecloud
   DEVICE_TITLE := Thunder Timecloud