Support for ASKEY RTV1907VW

I am asking for collaboration to bring OpenWRT to the Askey RTV1907VW.

Here's a boot screen

Base: 4.16_05
CFE version 1.0.38-118.3 for BCM963138 (32bit,SP,LE)
Build Date: Tue Nov  1 23:00:13 CST 2016 (charles@charles-All-Series)
Copyright (C) 2000-2015 Broadcom Corporation.
Bootloader version: CFEROM : 2.5.2Nr1820             CFERAM : 2.5.2Nr1820

Boot Strap Register:  0x7dfffc2f
Chip ID: BCM63136B0, ARM Cortex A9 Dual Core: 1000MHz
Total Memory: 536870912 bytes (512MB)
NAND ECC BCH-4, page size 0x800 bytes, spare size used 64 bytes
NAND flash device: , id 0xc2dc block 128KB size 524288KB
pmc_init:PMC using DQM mode
Board IP address                  : 192.168.1.1:ffffff00
Host IP address                   : 192.168.1.100
Gateway IP address                :
Run from flash/host/tftp (f/h/c)  : f
Default host run file name        : vmlinux
Default host flash file name      : bcm963xx_fs_kernel
Boot delay (0-9 seconds)          : 1
Boot image (0=latest, 1=previous) : 0
Default host ramdisk file name    :
Default ramdisk store address     :
Board Id (0-31)                   : RTV1907VWC3
Number of MAC Addresses (1-32)    : 16
Base MAC Address                  : e8:d1:1b:91:72:72
PSI Size (1-128) KBytes           : 48
Enable Backup PSI [0|1]           : 0
System Log Size (0-256) KBytes    : 0
Auxillary File System Size Percent: 0
MC memory allocation (MB)         : 4
TM memory allocation (MB)         : 44
DHD 0 memory allocation (MB)      : 14
DHD 1 memory allocation (MB)      : 0
DHD 2 memory allocation (MB)      : 0
WLan Feature                      : 0x00
Voice Board Configuration (0-1)   : LE9642_ZSI_BB
Partition 1 Size (MB)             : 8M
Partition 2 Size (MB)             : 1M
Partition 3 Size (MB)             : 4M
Partition 4 Size (MB) (Data)      : 4M

On board there's a serial port

Here there are a bit of links
https://slides.poul.org/2018/workshop-interni/fastgate-hacking/


https://www.ilpuntotecnico.com/forum/index.php/topic,78037.0.html

Sadly the first and the last are in Italian.

https://send.firefox.com/download/d18a85b681ea0cac/#w0Dhguiw74asDxsbmV2MRA Here's a dump of the root file system provided by Ansuel from www.ilpuntotecnico.com
Let me know if you need some files

Another interesting link: https://ieie.home.blog/2019/02/04/how-bricked-fastgate/