BeagleBoard-X15 PCIe

Hi everyone,

I am currently trying to find out how much work it would be to use the PCIe ports on the BB-X15.
From what I found there seems to be no readily available expansion board. I found this discussion from 2016 (update from 2017) which said there will be one “soon”:
https://groups.google.com/d/msg/beagleboard/X8fdWoko29w/StJEXjp6BgAJ

Are there any updates on that?

  • Andy

Hi Andy,

I am currently trying to find out how much work it would be to use the PCIe ports on the BB-X15.
From what I found there seems to be no readily available expansion board. I found this discussion from 2016 (update from 2017) which said there will be one “soon”:
https://groups.google.com/d/msg/beagleboard/X8fdWoko29w/StJEXjp6BgAJ

Are there any updates on that?

Our AM5728 motherboard includes two PCIe sockets
http://shop.elesar.co.uk/index.php?route=product/product&product_id=50

so the effort there is lower than on an X15; you just plug compatible expansion cards in the socket.

Plugging aside, it’s worth reading the 5 PCIe errata before going too far, and bearing them in mind:

  • i847 might catch you out with low drive level depending on which rev chip your X15 has
  • i870 might catch you out if registers are byte spaced (eg. a serial port arranged to look like the original IBM PS/2 peripheral)
    the other 3 errata are pretty benign,
    James.

Somewhat exotic, but does anybody know if the BB-X15 PCI port can be made to work
with the IT8892 and IT8888, which are a PCI-to-PCIe bridge and a PCI-to-ISA bridge?