For MV31-W PCIe variant on Linux platform integration, it's necessary to integrate additional MHI driver. The MHI driver is NOT ready on Linux mainstream kernel. A lot integration effort is expected (we can provide reference driver only, please help contact local FAE for technical support). In the attached file, we will briefly tell you how to port MBIM PCIE driver on linux platform. 

Besides, for PCIe variant, we only support MBIM over MHI, no RmNet.