mediatek: filogic: add support for zbt-z8103ax-d

mediatek: filogic: add support for zbt-z8103ax-d

Device support for zbt-z8103ax-d

Model D DTS is identical to Model C zbt-z8103ax-c.
Both models share same motherboard.

Difference between models is

 - Model C is a cylinder shape enclosure
   containing internal antennas.
 - Model D is a sandwich shape enclosure
   with 6 external antennas.

Specifications:

SoC: MediaTek MT7981B
RAM: 256MiB
Flash: Winbond SPI-NAND 128 MiB
Switch: 1 WAN, 3 LAN (Gigabit) MediaTek MT7531
Buttons: Reset, Mesh
Power: DC 12V 1A
WiFi: MT7981B 2.4Ghz & 5.8Ghz

Led Layout from left to right:

    Power
    Mesh (RGB Led, user controllable, default set to OpenWrt Status)
    WLAN 2.4G (user controllable)
    WAN (user controllable)
    LAN3
    LAN2
    LAN1
    WLAN 5G (user controllable)

Installation:

A. Through U-Boot menu:

    - Prepare your connecting computer to use static IP
        (legacy notation) 192.168.1.10 netmask 255.255.255.0
        (CIDR notation)   192.168.1.10/24
    - Power down the router and hold in the Reset button.
    - While holding in the button power up the router again.
    - Hold the button in for 10 seconds and then release.
    - Use your browser to go to 192.168.1.1
    - If you see a GUI allowing for flashing firmware you are at the right spot.
    - Upload the **Factory** image file.

Note: U-Boot GUI it can be used to recover from an incorrect firmware flash.

B. Through OpenWrt Dashboard:

    If your router comes with OpenWrt preinstalled (modified by the seller),
    you can easily upgrade by going to the dashboard (192.168.1.1)
    and then navigate to
    System -> Backup/Flash firmware, then flash the firmware

MAC Addresses:

MAC Addresses were found in Factory partition:

offset 0x4  F8:5E:3C:xx:xx:aa --> Router Label -2
offset 0xa  F8:5E:3C:xx:xx:bb --> Router Label -1
offset 0x24 F8:5E:3C:xx:xx:cc --> Router Label +1
offset 0x2a F8:5E:3C:xx:xx:yy --> printed on Router Label

Signed-off-by: Jörg Seitz <github.joeterminal@xoxy.net>
Link: https://github.com/openwrt/openwrt/pull/21626
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>