ramips: add support for JCG Y2

JCG Y2 is an AC1300M router

Hardware specs:
  SoC: MediaTek MT7621AT
  Flash: Winbond W25Q128JVSQ 16MiB
  RAM: Nanya NT5CB128M16 256MiB
  WLAN: 2.4/5 GHz 2T2R (1x MediaTek MT7615)
  Ethernet: 10/100/1000 Mbps x5
  LED: POWER, INTERNET, 2.4G, 5G
  Button: Reset
  Power: DC 12V,1A

Flash instructions:
  Upload factory.bin in stock firmware's upgrade page.

MAC addresses map:
  0x0004  *:c8  wlan2g/wlan5g/label
  0xe000  *:c7  lan
  0xe006  *:c6  wan

Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>

target/linux/ramips/dts/mt7621_jcg_y2.dts

@@ -0,0 +1,130 @@
+// 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 = "jcg,y2", "mediatek,mt7621-soc";
+	model = "JCG Y2";
+
+	aliases {
+		led-boot = &led_internet;
+		led-failsafe = &led_internet;
+		led-upgrade = &led_internet;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led_internet: internet {
+			label = "blue:internet";
+			gpios = <&gpio 15 GPIO_ACTIVE_LOW>;
+		};
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		reset {
+			label = "reset";
+			gpios = <&gpio 18 GPIO_ACTIVE_LOW>;
+			linux,code = <KEY_RESTART>;
+		};
+	};
+};
+
+&spi0 {
+	status = "okay";
+
+	flash@0 {
+		compatible = "jedec,spi-nor";
+		reg = <0>;
+		spi-max-frequency = <80000000>;
+		m25p,fast-read;
+
+		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;
+			};
+
+			partition@50000 {
+				compatible = "denx,uimage";
+				label = "firmware";
+				reg = <0x50000 0xfb0000>;
+			};
+		};
+	};
+};
+
+&pcie {
+	status = "okay";
+};
+
+&pcie0 {
+	wifi@0,0 {
+		compatible = "mediatek,mt76";
+		reg = <0x0000 0 0 0 0>;
+		mediatek,mtd-eeprom = <&factory 0x0>;
+	};
+};
+
+&gmac0 {
+	mtd-mac-address = <&factory 0xe000>;
+};
+
+&switch0 {
+	ports {
+		port@0 {
+			status = "okay";
+			label = "lan4";
+		};
+
+		port@1 {
+			status = "okay";
+			label = "lan3";
+		};
+
+		port@2 {
+			status = "okay";
+			label = "lan2";
+		};
+
+		port@3 {
+			status = "okay";
+			label = "lan1";
+		};
+
+		wan: port@4 {
+			status = "okay";
+			label = "wan";
+			mtd-mac-address = <&factory 0xe006>;
+		};
+	};
+};
+
+&state_default {
+	gpio {
+		groups = "jtag", "wdt";
+		function = "gpio";
+	};
+};

target/linux/ramips/image/mt7621.mk

@@ -684,6 +684,19 @@ define Device/jcg_jhr-ac876m
 endef
 TARGET_DEVICES += jcg_jhr-ac876m
 
+define Device/jcg_y2
+  $(Device/dsa-migration)
+  $(Device/uimage-lzma-loader)
+  IMAGE_SIZE := 16064k
+  IMAGES += factory.bin
+  IMAGE/factory.bin := $$(sysupgrade_bin) | check-size | jcg-header 95.1
+  JCG_MAXSIZE := 16064k
+  DEVICE_VENDOR := JCG
+  DEVICE_MODEL := Y2
+  DEVICE_PACKAGES := kmod-mt7615e kmod-mt7615-firmware kmod-usb3
+endef
+TARGET_DEVICES += jcg_y2
+
 define Device/lenovo_newifi-d1
   $(Device/dsa-migration)
   $(Device/uimage-lzma-loader)

target/linux/ramips/mt7621/base-files/etc/board.d/01_leds

@@ -19,6 +19,7 @@ d-team,newifi-d2)
 	;;
 d-team,pbr-m1|\
 gehua,ghl-r-001|\
+jcg,y2|\
 xzwifi,creativebox-v1)
 	ucidef_set_led_netdev "internet" "internet" "blue:internet" "wan"
 	;;

target/linux/ramips/mt7621/base-files/etc/board.d/02_network

@@ -113,6 +113,14 @@ ramips_setup_macs()
 		wan_mac=$(mtd_get_mac_ascii u-boot-env wanaddr)
 		label_mac=$wan_mac
 		;;
+	jcg,y2|\
+	wavlink,wl-wn531a6|\
+	winstars,ws-wn583a6|\
+	zbtlink,zbt-we1326|\
+	zbtlink,zbt-wg3526-16m|\
+	zbtlink,zbt-wg3526-32m)
+		label_mac=$(mtd_get_mac_binary factory 0x4)
+		;;
 	linksys,ea7300-v1|\
 	linksys,ea7300-v2|\
 	linksys,ea7500-v2)
@@ -128,13 +136,6 @@ ramips_setup_macs()
 		wan_mac=$label_mac
 		lan_mac=$(macaddr_add $label_mac 1)
 		;;
-	wavlink,wl-wn531a6|\
-	winstars,ws-wn583a6|\
-	zbtlink,zbt-we1326|\
-	zbtlink,zbt-wg3526-16m|\
-	zbtlink,zbt-wg3526-32m)
-		label_mac=$(mtd_get_mac_binary factory 0x4)
-		;;
 	esac
 
 	[ -n "$lan_mac" ] && ucidef_set_interface_macaddr "lan" $lan_mac