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openwrt/target/linux/mediatek/dts/mt7981b-keenetic-kn-3711.dts
Vladimir Epifantsev 9241f29c0e mediatek: filogic: add Keenetic Sprinter (KN-3711) support
Specification:
    SoC: Mediatek MT7981BA
    RAM: 512 MB DDR4 RAM
    Flash: Winbond W25N01GV 128 MB SPI-NAND (dual boot on OEM)
    WiFi: MT7976CN DBDC AX
    Switch: MediaTek MT7531AE (3x LAN Gigabit ports) + Internal Gbe Phy (1x WAN Gigabit port)
    GPIO: 4x LED (power, internet, fn, wifi), 2x buttons (wps, reset), 1x switch (mesh)

UART Interface:
    Pins: VCC, TX, RX, NC, GND
    Settings: 115200, 8N1

Flashing via TFTP:
    1. Connect your PC and router to the first LAN port, configure PC interface using IP 192.168.1.2, mask 255.255.255.0
    2. Save the factory image of the OpenWRT firmware, renamed to KN-3711_recovery.bin, on the TFTP server
    3. Hold the reset button and power up the device
    4. Keep the button pressed until the status LED starts blinking

Signed-off-by: Vladimir Epifantsev <volatilefield@outlook.com>
Link: https://github.com/openwrt/openwrt/pull/19633
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2025-09-18 23:16:48 +02:00

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Executable File

// SPDX-License-Identifier: GPL-2.0-only OR MIT
/dts-v1/;
#include "mt7981b.dtsi"
/ {
model = "Keenetic KN-3711";
compatible = "keenetic,kn-3711", "mediatek,mt7981";
aliases {
label-mac-device = &gmac0;
led-boot = &power_led;
led-failsafe = &power_led;
led-running = &power_led;
led-upgrade = &power_led;
serial0 = &uart0;
};
chosen {
stdout-path = "serial0:115200n8";
};
gpio-keys {
compatible = "gpio-keys";
switch-fn {
label = "fn";
gpios = <&pio 0 GPIO_ACTIVE_LOW>;
linux,code = <BTN_0>;
linux,input-type = <EV_SW>;
};
button-reset {
label = "reset";
gpios = <&pio 24 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
};
button-wps {
label = "wps";
gpios = <&pio 29 GPIO_ACTIVE_LOW>;
linux,code = <KEY_WPS_BUTTON>;
};
};
gpio-leds {
compatible = "gpio-leds";
power_led: led-0 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_POWER;
gpios = <&pio 11 GPIO_ACTIVE_HIGH>;
};
led-1 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_WAN;
gpios = <&pio 12 GPIO_ACTIVE_LOW>;
};
led-2 {
color = <LED_COLOR_ID_GREEN>;
function = "fn";
gpios = <&pio 9 GPIO_ACTIVE_LOW>;
};
led-3 {
color = <LED_COLOR_ID_GREEN>;
function = LED_FUNCTION_WLAN_2GHZ;
gpios = <&pio 34 GPIO_ACTIVE_LOW>;
linux,default-trigger = "phy0tpt";
};
};
virtual_flash {
compatible = "mtd-concat";
devices = <&firmware1 &firmware2>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "kernel";
reg = <0x0 0x600000>;
};
partition@600000 {
label = "ubi";
reg = <0x600000 0x06000000>;
};
};
};
};
&uart0 {
status = "okay";
};
&eth {
status = "okay";
gmac0: mac@0 {
compatible = "mediatek,eth-mac";
reg = <0>;
phy-mode = "2500base-x";
nvmem-cell-names = "mac-address";
nvmem-cells = <&macaddr_factory_4>;
fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
mac@1 {
compatible = "mediatek,eth-mac";
reg = <1>;
phy-mode = "gmii";
phy-handle = <&int_gbe_phy>;
label = "wan";
nvmem-cell-names = "mac-address";
nvmem-cells = <&macaddr_factory_a>;
};
};
&mdio_bus {
switch@1f {
compatible = "mediatek,mt7531";
reg = <0x1f>;
reset-gpios = <&pio 22 GPIO_ACTIVE_HIGH>;
interrupt-controller;
#interrupt-cells = <1>;
interrupt-parent = <&pio>;
interrupts = <38 IRQ_TYPE_LEVEL_HIGH>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
label = "lan1";
};
port@1 {
reg = <1>;
label = "lan2";
};
port@2 {
reg = <2>;
label = "lan3";
};
port@6 {
reg = <6>;
label = "cpu";
ethernet = <&gmac0>;
phy-mode = "2500base-x";
fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
};
};
};
&pio {
spi0_flash_pins: spi0-pins {
mux {
function = "spi";
groups = "spi0", "spi0_wp_hold";
};
conf-pu {
pins = "SPI0_CS", "SPI0_HOLD", "SPI0_WP";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-up = <MTK_PUPD_SET_R1R0_11>;
};
conf-pd {
pins = "SPI0_CLK", "SPI0_MOSI", "SPI0_MISO";
drive-strength = <MTK_DRIVE_8mA>;
bias-pull-down = <MTK_PUPD_SET_R1R0_11>;
};
};
};
&spi0 {
pinctrl-names = "default";
pinctrl-0 = <&spi0_flash_pins>;
status = "okay";
/* Winbond W25N01GV SPI NAND (128 MiB) */
spi_nand@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "spi-nand";
reg = <0>;
spi-max-frequency = <52000000>;
spi-tx-buswidth = <4>;
spi-rx-buswidth = <4>;
spi-cal-enable;
spi-cal-mode = "read-data";
spi-cal-datalen = <7>;
spi-cal-data = /bits/ 8 <0x53 0x50 0x49 0x4e 0x41 0x4e 0x44>;
spi-cal-addrlen = <5>;
spi-cal-addr = /bits/ 32 <0x0 0x0 0x0 0x0 0x0>;
mediatek,nmbm;
mediatek,bmt-max-ratio = <1>;
mediatek,bmt-max-reserved-blocks = <64>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
/* bl2 */
partition@0 {
label = "preloader";
reg = <0x0 0x80000>;
read-only;
};
/* fip */
partition@80000 {
label = "u-boot";
reg = <0x80000 0x200000>;
read-only;
};
partition@280000 {
label = "u-config";
reg = <0x280000 0x80000>;
read-only;
};
partition@300000 {
label = "rf-eeprom";
reg = <0x300000 0x200000>;
read-only;
nvmem-layout {
compatible = "fixed-layout";
#address-cells = <1>;
#size-cells = <1>;
eeprom_factory_0: eeprom@0 {
reg = <0x0 0x1000>;
};
/* lan mac */
macaddr_factory_4: macaddr@4 {
reg = <0x4 0x6>;
};
/* wan mac */
macaddr_factory_a: macaddr@a {
reg = <0xa 0x6>;
};
};
};
firmware1: partition@500000 {
label = "firmware_1";
reg = <0x500000 0x3500000>;
};
partition@3a00000 {
label = "config_1";
reg = <0x3a00000 0x80000>;
read-only;
};
partition@3a80000 {
label = "dump";
reg = <0x3a80000 0x80000>;
read-only;
};
partition@3c00000 {
label = "u-state";
reg = <0x3c00000 0x20000>;
read-only;
};
partition@3e80000 {
label = "u-config_res";
reg = <0x3e80000 0x80000>;
read-only;
};
partition@3f00000 {
label = "rf-eeprom_res";
reg = <0x3f00000 0x200000>;
read-only;
};
firmware2: partition@4100000 {
label = "firmware_2";
reg = <0x4100000 0x3500000>;
};
partition@7600000 {
label = "config_2";
reg = <0x7600000 0x80000>;
read-only;
};
};
};
};
&wifi {
nvmem-cell-names = "eeprom";
nvmem-cells = <&eeprom_factory_0>;
status = "okay";
};