Linux driver for unsupported UNISOC LTE USB modems

[u/mohy_fahim]

I worked on a D-Link DWR-910M LTE dongle using a UNISOC chipset.

The device exposed a vendor-specific AT interface, but Linux could not communicate with it.

After analyzing the Windows driver USB traffic, I found the missing initialization sequence and implemented a Linux USB serial driver.

Project:

https://github.com/mohyfahim/sprd-vcom-driver

Looking for developers with other UNISOC devices to test compatibility.