Hello,
@polystera could you share your last version of the patch in order to not start doing things from zero? I would like to have this device in snapshot at least
Hello vk496,
Sorry all forum emails are going to my spam folder, so sorry for the late reply.
I think the latest patches I supplied were these. I still believe that they are functionally correct, but I just didn't feel like learning more about the patch submission process at that stage.
Feel free to submit them, as I would also like to have the comfort of downloading images instead of compiling them 
I think the indentations are wrong as I remember using a webmailer as my VM couldn't access the internet at that time. I have archived the VM that I used to create the patches and currently do not have the time to get you a better set of patches, sorry.
https://www.mail-archive.com/openwrt-devel@lists.openwrt.org/msg56039.html
I have been using my Comfast CF-E538AC 24/7 with these patches since December 2020 but only as an AP. I have not compiled the firmware again since then.
The patches are pretty simple, so I don't see any issue applying them to the latest OpenWRT sources.
I hope you have more patience getting them added.
Cheers
Hello Valentin,
I have found the original file, the code is below.
I have also zipped and uploaded the file here (link valid for 30 days from 16/8/2021) :
Comfast CF-E538AC is a wall mounted access point with an additional
Ethernet LAN access port. It supports 802.11AC Wave2 MU-MIMO.
Serial port access for debricking requires simple soldering of 4 pins.
Device specifications:
* SoC: MT7620DA @ 580MHz
* RAM: 64MiB DDR2
* Flash: 8iB SPI
* Wireless 2.4GHz (SoC): b/g/n
* Wireless 5Ghz (MT7612E): n/ac, 2x2 MU-MINO
* Ethernet connection back (RTL8211F - port 4): 1× 1GbE, 802.3af PoE
* Ethernet connection front (RTL8211F - port 5): 1× 1GbE
Flashing instructions:
* Upgrade using stock web interface's update feature
Debricking:
* Serial port can be soldered on top PCB (marked as 1)
(1: VCC, 2: GND, 3: TX, 4: RX)
* Use 3.3V, 115200 baud, 8N1
* Recovery only possible via TFTP
* Modified U-Boot environment does not allow recovery via serial
data transfer (will not commit it to flash)
* Bootloader will show a menu for 1 seconds
* Select 2: Load system code then write to Flash via TFTP.
---
.../ramips/dts/mt7620a_comfast_cf-e538ac.dts | 149 ++++++++++++++++++
target/linux/ramips/image/mt7620.mk | 10 ++
.../mt7620/base-files/etc/board.d/01_leds | 3 +
.../mt7620/base-files/etc/board.d/02_network | 4 +
4 files changed, 166 insertions(+)
create mode 100644 target/linux/ramips/dts/mt7620a_comfast_cf-e538ac.dts
diff --git a/target/linux/ramips/dts/mt7620a_comfast_cf-e538ac.dts b/target/linux/ramips/dts/mt7620a_comfast_cf-e538ac.dts
new file mode 100644
index 0000000000..6ccf06531d
--- /dev/null
+++ b/target/linux/ramips/dts/mt7620a_comfast_cf-e538ac.dts
@@ -0,0 +1,149 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+#include "mt7620a.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+
+/ {
+ compatible = "comfast,cf-e538ac", "ralink,mt7620a-soc";
+ model = "Comfast CF-E538AC";
+
+ aliases {
+ led-boot = &led_wifi;
+ led-failsafe = &led_wifi;
+ led-running = &led_wifi;
+ led-upgrade = &led_wifi;
+ };
+
+ chosen {
+ bootargs = "console=ttyS0,115200";
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led_wifi: wifi {
+ label = "white:wifi";
+ gpios = <&gpio3 0 GPIO_ACTIVE_LOW>;
+ };
+ };
+
+ keys {
+ compatible = "gpio-keys";
+
+ reset {
+ label = "reset";
+ gpios = <&gpio0 13 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_RESTART>;
+ };
+ };
+};
+
+&gpio0 {
+ status = "okay";
+};
+
+&gpio3 {
+ status = "okay";
+};
+
+&spi0 {
+ status = "okay";
+
+ flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <10000000>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition@0 {
+ label = "u-boot";
+ reg = <0x0 0x30000>;
+ read-only;
+ };
+
+ partition@30000 {
+ label = "u-boot-env";
+ reg = <0x30000 0x10000>;
+ read-only;
+ };
+
+ factory: partition@40000 {
+ label = "factory";
+ reg = <0x40000 0x10000>;
+ read-only;
+ };
+
+ partition@50000 {
+ compatible = "denx,uimage";
+ label = "firmware";
+ reg = <0x50000 0x7b0000>;
+ };
+ };
+ };
+};
+
+ðernet {
+ status = "okay";
+ pinctrl-names = "default";
+ mtd-mac-address = <&factory 0xe000>;
+ pinctrl-0 = <&rgmii1_pins &rgmii2_pins &mdio_pins>;
+ mediatek,portmap = "wllll";
+
+ port@4 {
+ status = "okay";
+ phy-mode = "rgmii";
+ phy-handle = <&phy4>;
+ };
+
+ port@5 {
+ status = "okay";
+ phy-mode = "rgmii";
+ phy-handle = <&phy5>;
+ };
+
+ mdio-bus {
+ status = "okay";
+
+ phy4: ethernet-phy@4 {
+ reg = <0x04>;
+ phy-mode = "rgmii";
+ };
+
+ phy5: ethernet-phy@5 {
+ reg = <0x05>;
+ phy-mode = "rgmii";
+ };
+ };
+};
+
+&gsw {
+ mediatek,port4 = "gmac";
+};
+
+&wmac {
+ ralink,mtd-eeprom = <&factory 0x0>;
+};
+
+&pcie {
+ status = "okay";
+};
+
+&state_default {
+ gpio {
+ groups = "wled";
+ function = "gpio";
+ };
+};
+
+&pcie0 {
+ mt76@0,0 {
+ reg = <0x0000 0 0 0 0>;
+ mediatek,mtd-eeprom = <&factory 0x8000>;
+ ieee80211-freq-limit = <5000000 6000000>;
+ };
+};
diff --git a/target/linux/ramips/image/mt7620.mk b/target/linux/ramips/image/mt7620.mk
index dfdb5f28d3..63aa299545 100644
--- a/target/linux/ramips/image/mt7620.mk
+++ b/target/linux/ramips/image/mt7620.mk
@@ -163,6 +163,16 @@ define Device/buffalo_wmr-300
endef
TARGET_DEVICES += buffalo_wmr-300
+define Device/comfast_cf-e538ac
+ SOC := mt7620a
+ IMAGE_SIZE := 7872k
+ DEVICE_VENDOR := Comfast
+ DEVICE_MODEL := CF-E538AC
+ SUPPORTED_DEVICES += cf-e538ac
+ DEVICE_PACKAGES := kmod-mt76x2
+endef
+TARGET_DEVICES += comfast_cf-e538ac
+
define Device/comfast_cf-wr800n
SOC := mt7620n
IMAGE_SIZE := 7872k
diff --git a/target/linux/ramips/mt7620/base-files/etc/board.d/01_leds b/target/linux/ramips/mt7620/base-files/etc/board.d/01_leds
index 292f310d51..22d3e0f783 100755
--- a/target/linux/ramips/mt7620/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt7620/base-files/etc/board.d/01_leds
@@ -41,6 +41,9 @@ asus,rt-n14u)
bdcom,wap2100-sk)
ucidef_set_led_netdev "wifi_led" "wifi" "green:wlan2g" "wlan0"
;;
+comfast,cf-e538ac)
+ ucidef_set_led_netdev "wifi_led" "wifi" "white:wifi" "wlan0"
+ ;;
comfast,cf-wr800n)
ucidef_set_led_netdev "lan" "lan" "white:ethernet" eth0.1
ucidef_set_led_netdev "wifi_led" "wifi" "white:wifi" "wlan0"
diff --git a/target/linux/ramips/mt7620/base-files/etc/board.d/02_network b/target/linux/ramips/mt7620/base-files/etc/board.d/02_network
index e884390c31..b069fe75e7 100755
--- a/target/linux/ramips/mt7620/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt7620/base-files/etc/board.d/02_network
@@ -99,6 +99,10 @@ ramips_setup_interfaces()
ucidef_add_switch "switch0" \
"0:lan" "1:lan" "2:lan" "3:lan" "5:wan" "6@eth0"
;;
+ comfast,cf-e538ac)
+ ucidef_add_switch "switch0" \
+ "4:lan" "5:wan" "6@eth0"
+ ;;
comfast,cf-wr800n|\
hnet,c108)
ucidef_add_switch "switch0" \
--
2.20.1