Re:Raspberry Pi PCIe Devices
by vkdelta on Monday December 28, 2020 @12:53AM
(#25557054)
Please add m.2 lte and 5g modules with sim slot. They make good for IOT projects. I have seen people doing projects. Two vendors are quectel and Sierra wireless based off Qualcomm radios.
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Re:Raspberry Pi PCIe Devices
by geerlingguy on Monday December 28, 2020 @01:08AM
(#25557126)
It looks like the MCUZone CM4 4G mentioned here [1] is intended for just that purpose! I would be happy to try out a chipset provided it's not too expensive, and (ideally) it has good Linux driver support.
Drivers seem to be the dealbreaker for a few cards, if they rely on PCI express features the Pi OS or SoC currently don't support (like BIOS, or sort-of MSI-X support).
[1] https://github.com/geerlingguy/raspberry-pi-pcie-devices/iss...
Those need m.2 B key slots which are not compatible with m.2 M key NVMe disks. This is why I'm not crazy about the m.2 "standard".
Re:Raspberry Pi PCIe Devices
by nicolaslem on Monday December 28, 2020 @12:05PM
(#25560843)
To be fair the same thing can be said about its predecessor the miniPCIe slot.
True but that was only really for the msata version. m.2 has about half a dozen keys as of now. Like USB-C it tries to cram too many mutually incompatible electrical interfaces into one plug.