Tuoshi LT22M 4G Wireless Router
Status: OpenWrt support for the LT22M with the original bootloader and stock flash layout is proposed in OpenWrt PR #14011. The PR has not been merged. There are no official OpenWrt release or snapshot images for this device.
The Tuoshi LT22M is a 2.4 GHz Wi-Fi router with an onboard cellular modem. A replacement bootloader and a full-flash layout are also under development.
Hardware
| Item | Specification |
|---|---|
| SoC | MediaTek MT7628DAN, 580 MHz; the OpenWrt port uses the MT7628AN device-tree family |
| RAM | 64 MiB DDR2 |
| Flash | 16 MiB SPI-NOR |
| Wi-Fi | Integrated MT7628 2.4 GHz radio, 802.11b/g/n |
| Ethernet | Two 100 Mbit/s LAN ports |
| Cellular modem | Onboard ASR ML352 connected via USB; RNDIS data interface and serial interfaces |
| Serial console | 3.3 V TTL, 57600 baud, 8N1 |
| OpenWrt target | ramips/mt76x8 (proposed) |
OEM bootlog
[04030D08][04030C0D] DDR Calibration DQS reg = 00008889 U-Boot 1.1.3 (Apr 2 2021 - 10:40:12) Board: Ralink APSoC DRAM: 64 MB relocate_code Pointer at: 83f98000 flash manufacture id: ef, device id 40 18 find flash: W25Q128BV ============================================ Ralink UBoot Version: 5.0.0.0 -------------------------------------------- ASIC 7628_MP (Port5<->None) DRAM component: 512 Mbits DDR, width 16 DRAM bus: 16 bit Total memory: 64 MBytes Flash component: 16 MBytes NOR Flash Date:Apr 2 2021 Time:10:40:12 ============================================ icache: sets:512, ways:4, linesz:32 ,total:65536 dcache: sets:256, ways:4, linesz:32 ,total:32768 ##### The CPU freq = 580 MHZ #### estimate memory size =64 Mbytes RESET MT7628 PHY!!!!!! ================================================= Check image validation: Image1 Header Magic Number --> OK Image2 Header Magic Number --> OK Image1 Header Checksum --> OK Image2 Header Checksum --> OK Image1 Data Checksum --> OK Image2 Data Checksum --> OK Image1 Stable Flag --> Stable Image1 Try Counter --> 1 Image1: OK Image2: OK ================================================= Please choose the operation: 1: Load system code to SDRAM via TFTP. 2: Load system code then write to Flash via TFTP. 3: Boot system code via Flash (default). 4: Entr boot command line interface. 7: Load Boot Loader code then write to Flash via Serial. 9: Load Boot Loader code then write to Flash via TFTP. default: 3 0 3: System Boot system code via Flash. ## Booting image at bc050000 ... Image Name: JBoneCloud M7628NNxCPET Image Type: MIPS Linux Kernel Image (lzma compressed) Data Size: 6250353 Bytes = 6 MB Load Address: 80000000 Entry Point: 802a8290 Verifying Checksum ... OK Uncompressing Kernel Image ... OK No initrd ## Transferring control to Linux (at address 802a8290) ... ## Giving linux memsize in MB, 64 Starting kernel ... + LINUX started... 1.76 0.03 init system ... init leds [283][2] ... 1.79 0.03 modem loading [5] ... Password for 'admin' changed start watchdog [1543][11] ... start wdt [10570] ... start wdt ok [11575] [1001] ... system init ok 11.81 6.26 JBoneOS login: sh: 1: unknown operand sh: 1: unknown operand sh: 1: unknown operand init rild OK, found it 12.81 6.26 start rild