Several devices in mt76x8 subtarget use the following line to set
up wmac in their DTS(I) files:
ralink,mtd-eeprom = <&factory 0x4>
This is strange for several reasons:
- They should use mediatek,mtd-eeprom on this SOC
- The caldata is supposed to start at 0x0
- The parent DTSI mt7628an.dtsi specifies mediatek,mtd-eeprom anyway,
starting from 0x0
- The offset coincides with the default location of the MAC address
in caldata
Based on the comment in b28e94d4bf ("ramips: MiWiFi Nano fixes"),
it looks like the author for this device wanted to actually use
mtd-mac-address instead of ralink,mtd-eeprom. A check on the same
device revealed that actually the MAC address start at offset 4 there,
so the correct caldata offset is 0x0.
Based on these findings, and the fact that the expected location on
this SOC is 0x0, we remove the "ralink,mtd-eeprom = <&factory 0x4>"
statement from all devices in ramips (being only mt7628an anyway).
Thanks to Sungbo Eo for finding and researching this.
Reported-by: Sungbo Eo <mans0n@gorani.run>
Fixes: b28e94d4bf ("ramips: MiWiFi Nano fixes")
Signed-off-by: Adrian Schmutzler <freifunk@adrianschmutzler.de>
(cherry picked from commit 09d38a3bc3)
Specifications:
- SoC: MT7628DAN (MT7628AN with 64MB built-in RAM)
- Flash: 8M SPI NOR
- Ethernet: 5x 10/100Mbps
- WiFi: 2.4G: MT7628 built-in
5G: MT7612E
- 1x miniPCIe slot for LTE modem (only USB pins connected)
- 1x SIM slot
Flash instruction:
U-boot has a builtin web recovery page:
1. Hold the reset button while powering it up
2. Connect to the ethernet and set an IP in 192.168.1.0/24 range
3. Open your browser and upload firmware through http://192.168.1.1
Note about the LTE modem:
If your router comes with an EC25 module and it doesn't show up
as a QMI device, you should do the following to switch it to QMI
mode:
1. Install kmod-usb-serial-option and a terminal software
(e.g. minicom or screen). All 4 serial ports of the modem
should be available now.
2. Open /dev/ttyUSB3 with the terminal software and type this
AT command: AT+QCFG="usbnet",0
3. Power-cycle the router. You should now get a QMI device
recognized.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Adrian Schmutzler
Chuanhong Guo