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openwrt/target/linux/mediatek/dts/mt7981b-openfi-6c.dts
Jiasheng Zhu 191d738469 mediatek: add support for OpenFi 6C
PR of openwrt:main: https://github.com/openwrt/openwrt/pull/19512

OpenFi 6C is a portable Wi-Fi 6 travel router based on MediaTek MT7981B+MT7976CN.

Two slightly different versions have been sold. The V1 board has a green color and lacks the modem LED. The V2 board is black and has a LED for the modem.

Specifications:
- SoC: MediaTek MT7981B (Filogic 820) 1.3GHz dual-core ARM Cortex-A53
- RAM: 1GB DDR4
- Flash: 256MB SPI NAND
- Wireless: 2.4GHz/5GHz 802.11ax
- Ethernet: 1x 10/100/1000M LAN
- USB: 1x USB 3.0 Type-A port
- Expansion: M.2 slot for 5G modem
- Cooling: PWM-controlled fan
- Buttons: Reset, Mode switch
- LEDs: System, Ethernet, 5G WiFi, Modem status

**Installation via U-Boot web page**

1. Set static IP 192.168.21.2/255.255.255.0 on your computer.
2. Connect to the Ethernet port and hold the reset button while booting the device. Wait for 6-8 seconds, and release the reset button.
3. Open U-boot web page on your browser at http://192.168.21.1
4. Select the OpenWRT sysupgrade image, upload it, and start the upgrade.
5. Wait for automatic reboot.

**Installation via sysupgrade**

Flash the sysupgrade file via LuCI upgrade page without saving the settings.

Signed-off-by: Jiasheng Zhu <newbanyaya@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/19512
(cherry picked from commit 536a25ebf8)
Link: https://github.com/openwrt/openwrt/pull/19536
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2025-08-21 22:52:43 +02:00

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// SPDX-License-Identifier: (GPL-2.0 OR MIT)
/dts-v1/;
#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>
#include <dt-bindings/leds/common.h>
#include "mt7981.dtsi"
/ {
model = "OpenFi 6C";
compatible = "openfi,6c", "mediatek,mt7981";
aliases {
led-boot = &led_sys_green;
led-failsafe = &led_sys_green;
led-running = &led_sys_green;
led-upgrade = &led_sys_green;
serial0 = &uart0;
};
chosen {
stdout-path = "serial0:115200n8";
};
gpio-keys {
compatible = "gpio-keys";
reset {
label = "reset";
linux,code = <KEY_RESTART>;
gpios = <&pio 1 GPIO_ACTIVE_LOW>;
};
mode {
label = "mode";
linux,input-type = <EV_SW>;
linux,code = <BTN_0>;
gpios = <&pio 0 GPIO_ACTIVE_LOW>;
debounce-interval = <60>;
};
};
gpio-leds {
compatible = "gpio-leds";
led_sys_green: led-0 {
function = LED_FUNCTION_STATUS;
color = <LED_COLOR_ID_GREEN>;
gpios = <&pio 2 GPIO_ACTIVE_LOW>;
};
led-1 {
function = LED_FUNCTION_LAN;
color = <LED_COLOR_ID_GREEN>;
gpios = <&pio 34 GPIO_ACTIVE_LOW>;
};
led-2 {
function = LED_FUNCTION_WLAN_5GHZ;
color = <LED_COLOR_ID_GREEN>;
gpios = <&pio 35 GPIO_ACTIVE_LOW>;
linux,default-trigger = "phy1tpt";
};
led-3 {
function = LED_FUNCTION_MOBILE;
color = <LED_COLOR_ID_GREEN>;
gpios = <&pio 11 GPIO_ACTIVE_LOW>;
};
};
gpio-export {
compatible = "gpio-export";
modem_power {
gpio-export,name = "modem_power";
gpio-export,output = <1>;
gpios = <&pio 9 GPIO_ACTIVE_LOW>;
};
modem_reset {
gpio-export,name = "modem_reset";
gpio-export,output = <1>;
gpios = <&pio 10 GPIO_ACTIVE_LOW>;
};
modem_reset_2 {
gpio-export,name = "modem_reset_2";
gpio-export,output = <0>;
gpios = <&pio 12 GPIO_ACTIVE_HIGH>;
};
};
usb_vbus: regulator-usb-vbus {
compatible = "regulator-fixed";
regulator-name = "usb_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&pio 8 GPIO_ACTIVE_LOW>;
regulator-boot-on;
};
};
&fan {
pwms = <&pwm 0 40000 0>;
status = "okay";
};
&eth {
pinctrl-names = "default";
pinctrl-0 = <&mdio_pins>;
status = "okay";
gmac1: mac@1 {
compatible = "mediatek,eth-mac";
reg = <1>;
phy-mode = "gmii";
phy-handle = <&int_gbe_phy>;
nvmem-cells = <&macaddr_factory_4 0>;
nvmem-cell-names = "mac-address";
};
};
&spi0 {
pinctrl-names = "default";
pinctrl-0 = <&spi0_flash_pins>;
status = "okay";
spi_nand: flash@0 {
#address-cells = <1>;
#size-cells = <1>;
compatible = "spi-nand";
reg = <0>;
spi-max-frequency = <52000000>;
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>;
spi-tx-bus-width = <4>;
spi-rx-bus-width = <4>;
mediatek,nmbm;
mediatek,bmt-max-ratio = <1>;
mediatek,bmt-max-reserved-blocks = <64>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "BL2";
reg = <0x00000 0x0100000>;
read-only;
};
partition@100000 {
label = "u-boot-env";
reg = <0x0100000 0x0080000>;
};
factory: partition@180000 {
label = "Factory";
reg = <0x180000 0x0200000>;
read-only;
nvmem-layout {
compatible = "fixed-layout";
#address-cells = <1>;
#size-cells = <1>;
eeprom_factory_0: eeprom@0 {
reg = <0x0 0x1000>;
};
macaddr_factory_4: macaddr@4 {
compatible = "mac-base";
reg = <0x4 0x6>;
#nvmem-cell-cells = <1>;
};
};
};
partition@380000 {
label = "FIP";
reg = <0x380000 0x0200000>;
read-only;
};
partition@580000 {
label = "hw";
reg = <0x0580000 0x0080000>;
read-only;
};
partition@600000 {
label = "cfg";
reg = <0x0600000 0x0080000>;
read-only;
};
partition@680000 {
label = "ubi";
reg = <0x680000 0xe980000>;
};
};
};
};
&pio {
spi0_flash_pins: spi0-pins {
mux {
function = "spi";
groups = "spi0", "spi0_wp_hold";
};
};
pwm_pins: pwm-pins {
mux {
function = "pwm";
groups = "pwm0_0", "pwm1_0";
};
};
};
&usb_phy {
status = "okay";
};
&xhci {
status = "okay";
vbus-supply = <&usb_vbus>;
};
&uart0 {
status = "okay";
};
&watchdog {
status = "okay";
};
&wifi {
#address-cells = <1>;
#size-cells = <0>;
nvmem-cells = <&eeprom_factory_0>;
nvmem-cell-names = "eeprom";
status = "okay";
band@0 {
reg = <0>;
nvmem-cells = <&macaddr_factory_4 2>;
nvmem-cell-names = "mac-address";
};
band@1 {
reg = <1>;
nvmem-cells = <&macaddr_factory_4 3>;
nvmem-cell-names = "mac-address";
};
};
&pwm {
pinctrl-names = "default";
pinctrl-0 = <&pwm_pins>;
status = "okay";
};