Hi @aleksander0m , I’m trying to use the EM919x with the vendor driver, but also with the upstream mhi driver on 5.13.x, without success for the moment with both solutions.
For information, my setup consists of an EM919x connected to an I.MX6 DualLite through the PCIe bus.
Concerning the upstream driver, I added a MHI channel mapping the mhi/pci_generic driver, then I’m able to communicate with the modem but this remains random.
I opened a topic about: Sierra Wireless AirPrime EM919X PCIe support