Hi,
I'm new to this thing, but I did some digging.
There's a possibility that the AW859A is either a rebadged UWE5622, or is compatible with it. There's also a reference to a device, that is SC2355.
I only managed to find a little info about the UWE5622, and it might have some connections to Unisoc, a yet another Chinese fabless semiconductor maker, but not sure. You can get a bit more info by googling, including the name of some binary file.