[openwrt/openwrt] ramips: mt76x8: add support for Keenetic 4G (KN-1212)
LEDE Commits
lede-commits at lists.infradead.org
Sun Jun 22 14:16:10 PDT 2025
hauke pushed a commit to openwrt/openwrt.git, branch main:
https://git.openwrt.org/7aecbefb5265c0af0103f2c451cb8b0a2616d30a
commit 7aecbefb5265c0af0103f2c451cb8b0a2616d30a
Author: Anton Yu. Ivanusev <ivanusevanton at yandex.ru>
AuthorDate: Tue Jun 17 03:23:40 2025 +0500
ramips: mt76x8: add support for Keenetic 4G (KN-1212)
Specification:
SoC: MediaTek MT7628NN
RAM: 128 MB, EtronTech EM68C16CWQG-25H (DDR2)
Flash: 32MB, Winbond 25Q256JVFQ (Dual Boot, SPI)
Switch: MediaTek MT7628AN, 4 ports 100 Mbps
WiFi: MediaTek MT7603 2T2R/2.4GHz 802.11n
GPIO: 3 buttons (Wi-Fi, Reset, FN), 3 LEDs (Power, Internet, Wi-Fi), 1 port USB 2.0
Disassembly:
At the bottom, under the LEDs, there are 2 screws hidden by rubber feet. After removing the screws, pry the gray plastic part around (it is secured with latches) and remove it.
Serial Interface:
The serial interface can be connected to the 5 pin dots located on the right between the operating mode switch and the antenna.
Pins (from antenna to operating mode switch):
VCC
TX
RX
NC
GND
Settings: 115200, 8N1
Flashing via OEM recovery software:
1. Download the OEM recovery software from the manufacturer's website
2. Download the firmware image (for OpenWRT it is *-squashfs-factory.bin), rename it to KN-1212_recovery.bin
3. Replace the file in the fw folder OEM recovery software with the file from step 2.
4. Run the OEM recovery software and follow the instructions.
Flashing via TFTP:
1. Connect your PC and router to port 1-3, configure PC interface using IP 192.168.1.2, mask 255.255.255.252
2. Serve the firmware image (for OpenWRT it is *-squashfs-factory.bin) renamed to KN-1212_recovery.bin via TFTP
3. Power up the router while pressing Reset button on the back
4. Release Restart button when Power LED starts blinking
To revert back to OEM firmware:
The return to the OEM firmware is carried out by using the methods described above with the help of the appropriate firmware image.
When using OEM bootloader, the firmware image size cannot exceed the size of one OEM «Firmware_x» partition or Kernel + rootFS size.
Signed-off-by: Anton Yu. Ivanusev <ivanusevanton at yandex.ru>
Link: https://github.com/openwrt/openwrt/pull/19157
Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
---
.../linux/ramips/dts/mt7628an_keenetic_kn-1212.dts | 219 +++++++++++++++++++++
target/linux/ramips/image/mt76x8.mk | 12 ++
.../ramips/mt76x8/base-files/etc/board.d/01_leds | 1 +
.../mt76x8/base-files/etc/board.d/02_network | 1 +
4 files changed, 233 insertions(+)
diff --git a/target/linux/ramips/dts/mt7628an_keenetic_kn-1212.dts b/target/linux/ramips/dts/mt7628an_keenetic_kn-1212.dts
new file mode 100644
index 0000000000..8214ff5983
--- /dev/null
+++ b/target/linux/ramips/dts/mt7628an_keenetic_kn-1212.dts
@@ -0,0 +1,219 @@
+// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
+#include "mt7628an.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+ compatible = "keenetic,kn-1212", "mediatek,mt7628an-soc";
+ model = "Keenetic KN-1212";
+
+ aliases {
+ led-boot = &led_power;
+ led-failsafe = &led_power;
+ led-running = &led_power;
+ led-upgrade = &led_power;
+ };
+
+ chosen {
+ bootargs = "console=ttyS0,115200";
+ };
+
+ regulator-usb {
+ compatible = "regulator-fixed";
+ regulator-name = "USB-power";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ gpios = <&gpio 37 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ regulator-always-on;
+ };
+
+ leds {
+ compatible = "gpio-leds";
+
+ led_power: power {
+ function = LED_FUNCTION_POWER;
+ color = <LED_COLOR_ID_GREEN>;
+ gpios = <&gpio 38 GPIO_ACTIVE_LOW>;
+ };
+
+ internet {
+ function = LED_FUNCTION_WAN;
+ color = <LED_COLOR_ID_GREEN>;
+ gpios = <&gpio 2 GPIO_ACTIVE_LOW>;
+ };
+
+ wifi {
+ function = LED_FUNCTION_WLAN;
+ color = <LED_COLOR_ID_GREEN>;
+ gpios = <&gpio 0 GPIO_ACTIVE_LOW>;
+ linux,default-trigger = "phy0tpt";
+ };
+ };
+
+
+ keys {
+ compatible = "gpio-keys";
+
+ fn {
+ label = "fn";
+ gpios = <&gpio 11 GPIO_ACTIVE_LOW>;
+ linux,code = <BTN_0>;
+ };
+
+ reset {
+ label = "restart";
+ gpios = <&gpio 5 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_RESTART>;
+ };
+
+ wps {
+ label = "wps";
+ gpios = <&gpio 4 GPIO_ACTIVE_LOW>;
+ linux,code = <KEY_WPS_BUTTON>;
+ };
+ };
+
+ virtual_flash {
+ compatible = "mtd-concat";
+ devices = <&firmware1 &firmware2>;
+
+ partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition at 0 {
+ compatible = "denx,uimage";
+ label = "firmware";
+ reg = <0x0 0x1cc0000>;
+ };
+ };
+ };
+};
+
+&state_default {
+ gpio {
+ groups = "i2s", "i2c", "gpio", "refclk", "wdt", "wled_an";
+ function = "gpio";
+ };
+};
+
+&spi0 {
+ status = "okay";
+
+ flash at 0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ spi-max-frequency = <133000000>;
+
+ partitions: partitions {
+ compatible = "fixed-partitions";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ partition at 0 {
+ label = "u-boot";
+ reg = <0x0 0x30000>;
+ read-only;
+ };
+
+ partition at 30000 {
+ label = "u-config";
+ reg = <0x30000 0x10000>;
+ read-only;
+ };
+
+ partition at 40000 {
+ label = "rf-eeprom";
+ reg = <0x40000 0x10000>;
+ read-only;
+
+ nvmem-layout {
+ compatible = "fixed-layout";
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ eeprom_factory_0: eeprom at 0 {
+ reg = <0x0 0x400>;
+ };
+
+ macaddr_factory_28: macaddr at 28 {
+ reg = <0x28 0x6>;
+ };
+ };
+ };
+
+ firmware1: partition at 50000 {
+ label = "firmware_1";
+ reg = <0x50000 0xe60000>;
+ };
+
+ partition at eb0000 {
+ label = "config_1";
+ reg = <0xeb0000 0x40000>;
+ read-only;
+ };
+
+ partition at ef0000 {
+ label = "storage";
+ reg = <0xef0000 0x100000>;
+ read-only;
+ };
+
+ partition at ff0000 {
+ label = "dump";
+ reg = <0xff0000 0x10000>;
+ read-only;
+ };
+
+ partition at 1000000 {
+ label = "u-state";
+ reg = <0x1000000 0x30000>;
+ read-only;
+ };
+
+ partition at 1030000 {
+ label = "u-config_res";
+ reg = <0x1030000 0x10000>;
+ read-only;
+ };
+
+ partition at 1040000 {
+ label = "rf-eeprom_res";
+ reg = <0x1040000 0x10000>;
+ read-only;
+ };
+
+ firmware2: partition at 1050000 {
+ label = "firmware_2";
+ reg = <0x1050000 0xf60000>;
+ };
+
+ partition at 1fb0000 {
+ label = "config_2";
+ reg = <0x1fb0000 0x40000>;
+ read-only;
+ };
+ };
+ };
+};
+
+ðernet {
+ nvmem-cells = <&macaddr_factory_28>;
+ nvmem-cell-names = "mac-address";
+};
+
+&esw {
+ mediatek,portmap = <0x3e>;
+};
+
+&wmac {
+ status = "okay";
+
+ nvmem-cells = <&eeprom_factory_0>;
+ nvmem-cell-names = "eeprom";
+};
+
diff --git a/target/linux/ramips/image/mt76x8.mk b/target/linux/ramips/image/mt76x8.mk
index e4e40a7908..dacc6fc28c 100644
--- a/target/linux/ramips/image/mt76x8.mk
+++ b/target/linux/ramips/image/mt76x8.mk
@@ -395,6 +395,18 @@ define Device/keenetic_kn-1112
endef
TARGET_DEVICES += keenetic_kn-1112
+define Device/keenetic_kn-1212
+ BLOCKSIZE := 64k
+ IMAGE_SIZE := 15073280
+ DEVICE_VENDOR := Keenetic
+ DEVICE_MODEL := KN-1212
+ DEVICE_PACKAGES := kmod-usb2
+ IMAGES += factory.bin
+ IMAGE/factory.bin := $$(sysupgrade_bin) | pad-to $$$$(BLOCKSIZE) | \
+ check-size | zyimage -d 0x801212 -v "KN-1212"
+endef
+TARGET_DEVICES += keenetic_kn-1212
+
define Device/keenetic_kn-1221
BLOCKSIZE := 64k
IMAGE_SIZE := 29440k
diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds b/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
index 09e076ec3d..202e593b6c 100644
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/01_leds
@@ -59,6 +59,7 @@ hiwifi,hc5761a)
ucidef_set_led_switch "wan" "WAN" "blue:wan" "switch0" "0x10"
;;
keenetic,kn-1112|\
+keenetic,kn-1212|\
keenetic,kn-1221|\
keenetic,kn-1613|\
keenetic,kn-1711|\
diff --git a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
index d52925d42d..7bcd270982 100644
--- a/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
+++ b/target/linux/ramips/mt76x8/base-files/etc/board.d/02_network
@@ -138,6 +138,7 @@ ramips_setup_interfaces()
"1:lan" "2:lan" "0:wan" "6 at eth0"
;;
keenetic,kn-1112|\
+ keenetic,kn-1212|\
keenetic,kn-1613|\
keenetic,kn-1713|\
motorola,mwr03)
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