Linux PCIE Driver for RM520N-GL - IoT Modules / 5G Module - Quectel Forums
Could you show
mmcli -m 0
I don’t know whether the mhi_pcie_generic support the AT port. Normally we would like to try the Quectel driver pcie_mhi.
RM520N includes different kinds, some module is working for laptop and might do not support AT port.