ramips: add support for Linksys EA6350 v4

Specifications:
- SoC: MT7621DAT (880MHz, 2 Cores)
- RAM: 128 MB
- Flash: 128 MB NAND
- Ethernet: 5x 1GiE MT7530
- WiFi: MT7603/MT7613
- USB: 1x USB 3.0

This is another MT7621 device, very similar to other Linksys EA7300
series devices.

Installation:

Upload the generated factory.bin image via the stock web firmware
updater.

Reverting to factory firmware:

Like other EA7300 devices, this device has an A/B router configuration
to prevent bricking.  Hard-resetting this device three (3) times will
put the device in failsafe (default) mode.  At this point, flash the
OEM image to itself and reboot.  This puts the router back into the 'B'
image and allows for a firmware upgrade.

Troubleshooting:

If the firmware will not boot, first restore the factory as described
above.  This will then allow the factory.bin update to be applied
properly.

Signed-off-by: Nick McKinney <nick@ndmckinney.net>

8 files changed, 52 insertions, 0 deletions

diff --git a/package/boot/uboot-envtools/files/ramips b/package/boot/uboot-envtools/files/ramips
index 9ad4d64ed9..d4c8424571 100644
--- a/package/boot/uboot-envtools/files/ramips
+++ b/package/boot/uboot-envtools/files/ramips
@@ -52,6 +52,7 @@ ravpower,rp-wd03)
 jcg,q20)
 	ubootenv_add_uci_config "/dev/mtd1" "0x0" "0x20000" "0x20000"
 	;;
+linksys,ea6350-v4|\
 linksys,ea7300-v1|\
 linksys,ea7300-v2|\
 linksys,ea7500-v2|\
diff --git a/target/linux/ramips/dts/mt7621_linksys_ea6350-v4.dts b/target/linux/ramips/dts/mt7621_linksys_ea6350-v4.dts
new file mode 100644
index 0000000000..272b01af1e
--- /dev/null
+++ b/target/linux/ramips/dts/mt7621_linksys_ea6350-v4.dts
@@ -0,0 +1,37 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+
+#include "mt7621_linksys_ea7xxx.dtsi"
+
+/ {
+	compatible = "linksys,ea6350-v4", "mediatek,mt7621-soc";
+	model = "Linksys EA6350 v4";
+};
+
+&switch0 {
+	ports {
+		port@0 {
+			status = "okay";
+			label = "lan1";
+		};
+
+		port@1 {
+			status = "okay";
+			label = "lan2";
+		};
+
+		port@2 {
+			status = "okay";
+			label = "lan3";
+		};
+
+		port@3 {
+			status = "okay";
+			label = "lan4";
+		};
+
+		port@4 {
+			status = "okay";
+			label = "wan";
+		};
+	};
+};
diff --git a/target/linux/ramips/image/mt7621.mk b/target/linux/ramips/image/mt7621.mk
index 46097f231e..7755fbef81 100644
--- a/target/linux/ramips/image/mt7621.mk
+++ b/target/linux/ramips/image/mt7621.mk
@@ -912,6 +912,15 @@ define Device/linksys_ea7xxx
 	append-ubi | check-size | linksys-image type=$$$$(LINKSYS_HWNAME)
 endef
 
+define Device/linksys_ea6350-v4
+	$(Device/linksys_ea7xxx)
+	DEVICE_MODEL := EA6350
+	DEVICE_VARIANT := v4
+	LINKSYS_HWNAME := EA6350
+	DEVICE_PACKAGES += kmod-mt7603 kmod-mt7663-firmware-ap
+endef
+TARGET_DEVICES += linksys_ea6350-v4
+
 define Device/linksys_ea7300-v1
   $(Device/linksys_ea7xxx)
   DEVICE_MODEL := EA7300
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
index 6e6cd747c4..29962f41d7 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
@@ -55,6 +55,7 @@ gnubee,gb-pc2)
 linksys,e5600)
 	ucidef_set_led_netdev "wan" "wan link" "blue:wan" "wan" "link"
 	;;
+linksys,ea6350-v4|\
 linksys,ea7300-v1|\
 linksys,ea7300-v2|\
 linksys,ea7500-v2|\
diff --git a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
index b2bca0f3cd..52e0b6b572 100644
--- a/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7621/base-files/etc/board.d/02_network
@@ -148,6 +148,7 @@ ramips_setup_macs()
 		label_mac=$(mtd_get_mac_binary factory 0x4)
 		;;
 	linksys,e5600|\
+	linksys,ea6350-v4|\
 	linksys,ea7300-v1|\
 	linksys,ea7300-v2|\
 	linksys,ea7500-v2|\
diff --git a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
index 6ef44138cc..3c3b1e62e7 100644
--- a/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
+++ b/target/linux/ramips/mt7621/base-files/etc/hotplug.d/ieee80211/10_fix_wifi_mac
@@ -30,6 +30,7 @@ case "$board" in
 			macaddr_setbit_la "$(mtd_get_mac_binary Factory 0x4)" > /sys${DEVPATH}/macaddress
 		;;
 	linksys,e5600|\
+	linksys,ea6350-v4|\
 	linksys,ea7300-v1|\
 	linksys,ea7300-v2|\
 	linksys,ea7500-v2|\
diff --git a/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount b/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount
index 7b4a63d663..8382bdf0c5 100755
--- a/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount
+++ b/target/linux/ramips/mt7621/base-files/etc/init.d/bootcount
@@ -9,6 +9,7 @@ boot() {
 			echo -e "bootcount\nbootchanged\n" | /usr/sbin/fw_setenv -s -
 		;;
 	linksys,e5600|\
+	linksys,ea6350-v4|\
 	linksys,ea7300-v1|\
 	linksys,ea7300-v2|\
 	linksys,ea7500-v2|\
diff --git a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
index 52c334e05e..8e1bdc157f 100755
--- a/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
+++ b/target/linux/ramips/mt7621/base-files/lib/upgrade/platform.sh
@@ -62,6 +62,7 @@ platform_do_upgrade() {
 	iptime,t5004|\
 	jcg,q20|\
 	linksys,e5600|\
+	linksys,ea6350-v4|\
 	linksys,ea7300-v1|\
 	linksys,ea7300-v2|\
 	linksys,ea7500-v2|\