openwrt/target/linux/mediatek/dts/mt7622-xiaomi-redmi-router-ax6s.dts
Richard Huynh 9f9477b275 mediatek: Add support for Xiaomi Redmi Router AX6S
Also known as the "Xiaomi Router AX3200" in western markets,
but only the AX6S is widely installation-capable at this time.

SoC: MediaTek MT7622B
RAM: DDR3 256 MiB (ESMT M15T2G16128A)
Flash: SPI-NAND 128 MiB (ESMT F50L1G41LB or Gigadevice GD5F1GQ5xExxG)
WLAN: 2.4/5 GHz 4T4R
2.4 GHz: MediaTek MT7622B
5 GHz: MediaTek MT7915E
Ethernet: 4x 10/100/1000 Mbps
Switch: MediaTek MT7531B
LEDs/Keys: 2/2 (Internet + System LED, Mesh button + Reset pin)
UART: Marked J1 on board VCC RX GND TX, beginning from "1". 3.3v, 115200n8
Power: 12 VDC, 1.5 A

Notes:
U-Boot passes through the ethaddr from uboot-env partition,
but also has been known to reset it to a generic mac address
hardcoded in the bootloader.

However, bdata is also populated with the ethernet mac addresses,
but is also typically never written to. Thus this is used instead.

Installation:
1. Flash stock Xiaomi "closed beta" image labelled
'miwifi_rb03_firmware_stable_1.2.7_closedbeta.bin'.
(MD5: 5eedf1632ac97bb5a6bb072c08603ed7)

2. Calculate telnet password from serial number and login

3. Execute commands to prepare device
nvram set ssh_en=1
nvram set uart_en=1
nvram set boot_wait=on
nvram set flag_boot_success=1
nvram set flag_try_sys1_failed=0
nvram set flag_try_sys2_failed=0
nvram commit

4. Download and flash image
On computer:
python -m http.server
On router:
cd /tmp
wget http://<IP>:8000/factory.bin
mtd -r write factory.bin firmware

Device should reboot at this point.

Reverting to stock:
Stock Xiaomi recovery tftp that accepts their signed images,
with default ips of 192.168.31.1 + 192.168.31.100.
Stock image should be renamed to tftp server ip in hex (Eg. C0A81F64.img)
Triggered by holding reset pin on powerup.

A simple implementation of this would be via dnsmasq's
dhcp-boot option or using the vendor's (Windows only)
recovery tool available on their website.

Signed-off-by: Richard Huynh <voxlympha@gmail.com>
2022-03-20 18:33:39 +00:00

356 lines
5.6 KiB
Plaintext

// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
/dts-v1/;
#include <dt-bindings/input/input.h>
#include <dt-bindings/gpio/gpio.h>
#include "mt7622.dtsi"
#include "mt6380.dtsi"
/ {
model = "Xiaomi Redmi Router AX6S";
compatible = "xiaomi,redmi-router-ax6s", "mediatek,mt7622";
aliases {
serial0 = &uart0;
led-boot = &led_power_amber;
led-failsafe = &led_power_amber;
led-running = &led_power_blue;
led-upgrade = &led_power_blue;
};
chosen {
stdout-path = "serial0:115200n8";
bootargs = "earlycon=uart8250,mmio32,0x11002000 console=ttyS0,115200n8 swiotlb=512";
};
memory {
reg = <0 0x40000000 0 0x8000000>;
};
leds {
compatible = "gpio-leds";
led_power_blue: power_blue {
label = "blue:power";
gpios = <&pio 18 GPIO_ACTIVE_LOW>;
};
led_power_amber: power_amber {
label = "amber:power";
gpios = <&pio 17 GPIO_ACTIVE_LOW>;
};
led_net_blue: net_blue {
label = "blue:net";
gpios = <&pio 01 GPIO_ACTIVE_LOW>;
};
led_net_amber: net_amber {
label = "amber:net";
gpios = <&pio 16 GPIO_ACTIVE_LOW>;
};
};
keys {
compatible = "gpio-keys";
reset {
label = "reset";
gpios = <&pio 0 GPIO_ACTIVE_LOW>;
linux,code = <KEY_RESTART>;
};
mesh {
label = "mesh";
gpios = <&pio 102 GPIO_ACTIVE_LOW>;
linux,code = <BTN_9>;
linux,input-type = <EV_SW>;
};
};
};
&cpu0 {
proc-supply = <&mt6380_vcpu_reg>;
sram-supply = <&mt6380_vm_reg>;
};
&cpu1 {
proc-supply = <&mt6380_vcpu_reg>;
sram-supply = <&mt6380_vm_reg>;
};
&pio {
eth_pins: eth-pins {
mux {
function = "eth";
groups = "mdc_mdio", "rgmii_via_gmac2";
};
};
pcie0_pins: pcie0-pins {
mux {
function = "pcie";
groups = "pcie0_pad_perst",
"pcie0_1_waken",
"pcie0_1_clkreq";
};
};
pmic_bus_pins: pmic-bus-pins {
mux {
function = "pmic";
groups = "pmic_bus";
};
};
pwm7_pins: pwm1-2-pins {
mux {
function = "pwm";
groups = "pwm_ch7_2";
};
};
/* Serial NAND is shared pin with SPI-NOR */
serial_nand_pins: serial-nand-pins {
mux {
function = "flash";
groups = "snfi";
};
};
uart0_pins: uart0-pins {
mux {
function = "uart";
groups = "uart0_0_tx_rx" ;
};
};
watchdog_pins: watchdog-pins {
mux {
function = "watchdog";
groups = "watchdog";
};
};
};
&eth {
pinctrl-names = "default";
pinctrl-0 = <&eth_pins>;
status = "okay";
gmac0: mac@0 {
compatible = "mediatek,eth-mac";
reg = <0>;
phy-connection-type = "2500base-x";
nvmem-cells = <&macaddr_factory_4>;
nvmem-cell-names = "mac-address";
mac-address-increment = <(-1)>;
fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
mdio-bus {
#address-cells = <1>;
#size-cells = <0>;
switch@0 {
compatible = "mediatek,mt7531";
reg = <0>;
interrupt-controller;
#interrupt-cells = <1>;
interrupt-parent = <&pio>;
interrupts = <53 IRQ_TYPE_LEVEL_HIGH>;
reset-gpios = <&pio 54 GPIO_ACTIVE_HIGH>;
ports {
#address-cells = <1>;
#size-cells = <0>;
wan: port@1 {
reg = <1>;
label = "wan";
};
port@2 {
reg = <2>;
label = "lan1";
};
port@3 {
reg = <3>;
label = "lan2";
};
port@4 {
reg = <4>;
label = "lan3";
};
port@6 {
reg = <6>;
label = "cpu";
ethernet = <&gmac0>;
phy-mode = "2500base-x";
fixed-link {
speed = <2500>;
full-duplex;
pause;
};
};
};
};
};
};
&snand {
pinctrl-names = "default";
pinctrl-0 = <&serial_nand_pins>;
status = "okay";
mediatek,bmt-v2;
mediatek,bmt-table-size = <0x1000>;
mediatek,bmt-remap-range = <0x0 0x6c0000>;
partitions {
compatible = "fixed-partitions";
#address-cells = <1>;
#size-cells = <1>;
partition@0 {
label = "Preloader";
reg = <0x0 0x80000>;
read-only;
};
partition@80000 {
label = "ATF";
reg = <0x80000 0x40000>;
read-only;
};
partition@c0000 {
label = "u-boot";
reg = <0xc0000 0x80000>;
read-only;
};
partition@140000 {
label = "u-boot-env";
reg = <0x140000 0x40000>;
};
partition@180000 {
label = "bdata";
reg = <0x180000 0x40000>;
};
factory: partition@1c0000 {
label = "factory";
reg = <0x1c0000 0x80000>;
read-only;
compatible = "nvmem-cells";
#address-cells = <1>;
#size-cells = <1>;
macaddr_factory_4: macaddr@4 {
reg = <0x4 0x6>;
};
};
partition@240000 {
label = "crash";
reg = <0x240000 0x40000>;
read-only;
};
partition@280000 {
label = "crash_log";
reg = <0x280000 0x40000>;
read-only;
};
/* Shrunk and renamed from "firmware"
* as to not break luci size checks
*/
partition@2c0000 {
label = "kernel";
compatible = "denx,fit";
reg = <0x2c0000 0x400000>;
};
/* ubi partition is the result of squashing
* consecutive stock partitions:
* - firmware (partially)
* - firmware1
* - overlay
* - obr
*/
partition@6c0000 {
label = "ubi";
reg = <0x6C0000 0x6f00000>;
};
};
};
&pcie0 {
pinctrl-names = "default";
pinctrl-0 = <&pcie0_pins>;
status = "okay";
};
&slot0 {
status = "okay";
wifi@0,0 {
compatible = "mediatek,mt76";
reg = <0x0000 0 0 0 0>;
mediatek,mtd-eeprom = <&factory 0x5000>;
ieee80211-freq-limit = <5000000 6000000>;
};
};
&pwm {
pinctrl-names = "default";
pinctrl-0 = <&pwm7_pins>;
status = "okay";
};
&pwrap {
pinctrl-names = "default";
pinctrl-0 = <&pmic_bus_pins>;
status = "okay";
};
&rtc {
status = "disabled";
};
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_pins>;
status = "okay";
};
&watchdog {
pinctrl-names = "default";
pinctrl-0 = <&watchdog_pins>;
status = "okay";
};
&wmac {
status = "okay";
mediatek,mtd-eeprom = <&factory 0x0>;
};