Some MT7915 devices need to load the second part of the eeprom to
work properly. The mt76 driver is not yet ready to read the pre-cal
data via the NVMEM cell. Therefore, partially revert commit to fix
the device probe issue on some devices.
P.S.
Except for D-Link and Ubnt devices, It is still uncertain whether
pre-cal data is required for other devices in the patch.
This partially reverts commit 9ac891f8c4.
Fixes: https://github.com/openwrt/openwrt/issues/13700
Signed-off-by: Shiji Yang <yangshiji66@qq.com>
Rename existing device to v1 and create common .dtsi
Difference to v1: 16MB Flash
Specifications:
SoC: MediaTek MT7621
RAM: 256 MB
Flash: 16 MB (SPI NOR, XM25QH128C on my device)
WiFi: MediaTek MT7915E
Switch: 1 WAN, 4 LAN (Gigabit)
Buttons: Reset, WPS
LEDs: Two Power LEDs (blue and red; together they form purple)
Power: DC 12V 1A center positive
Serial: 115200 8N1
C440 - (3V3 - GND - RX - TX) - C41 | v1 and v2
(P - G - R - T) | v2 labels them on the board
Installation:
Download and flash the manufacturer's built OpenWrt image available at
http://www.cudytech.com/openwrt_software_download
Install the new OpenWrt image via luci (System -> Backup/Flash firmware)
Be sure to NOT keep settings.
Recovery:
Loads only signed manufacture firmware due to bootloader RSA verification
Serve tftp-recovery image as /recovery.bin on 192.168.1.88/24
Connect to any lan ethernet port
Power on the device while holding the reset button
Wait at least 8 seconds before releasing reset button for image to
download
MAC addresses as verified by OEM firmware:
use address source
LAN f4:a4:54:86:75:a2 label
WAN f4:a4:54:86:75:a3 label + 1
2g f4:a4:54:86:75:a2 label
5g f6:a4:54:b6:75:a2 label + LA-Bit set + 4th oktet increased
The label MAC address is found in bdinfo 0xde00.
Signed-off-by: Felix Baumann <felix.bau@gmx.de>
