[Arm-netbook] eoma68 router (qca9531)

[Christopher Havel]

Replying by phone; please forgive the top-posting (and potential typos)
that result from that.

Would it be possible to have *two* PCIe Mini Card slots, say one for WiFi
and one for 4g/LTE?

That would be awesome. Mom hates cables, and I mostly agree with her on
that... so look much easier, with the router in the front hall, to run WiFi
rather than Ethernet to the kitchen table, two rooms and ~30ft away...

On May 5, 2017 10:12 AM, "Luke Kenneth Casson Leighton" <lkcl at lkcl.net>
wrote:

> okaaay so the plan is to restart the eoma68 router project, this time
> with a pre-existing reference design based on the QCA9531.  that has a
> PCIe interface, USB2 and a 5-port GbE *and* a 2x2 2.4ghz WIFI antenna.
> full source is available for everything so it can be entirely libre
> and RYF Certified.
>
> the advantage of having an EOMA68 Card in the router should be clear:
> the Card will have considerably more resources: RAM, CPU cycles etc.
> meaning that VPNs can be done without high latency, yet take advantage
> of the LAN capabilities of the 5-port... you could put in a MiniPCIe
> Card (a *proper* one) e.g. a 3G/4G/LTE Modem, WIMAX, 802.11ac... blah
> blah.
>
> the tricky bit: connecting the EOMA68 Card to the QCA9531.  now, i
> took a look at the Reference Design and i *really* do not want to
> touch the layout for the GbE, WIFI or PCIe.  so i figured, why not
> connect the EOMA68 USB2 host interface back-to-back with the QCA9531's
> USB host?
>
> turns out that something called the Cypress AN2720 can do exactly
> that, and it comes up as a cdc_subset of the usbnet linux kernel
> driver.  yay!  quick search online: the datasheet is publicly
> available, easy to find on digikey. yay!
>
> so i would assume, because it's not an actual 10/100 ethernet, that it
> would run at (saturate) the full 480mb/sec of USB2.  so not quite GbE
> speeds but pretty damn close.  yay!
>
> anyway should be quite straightforward.
>
> l.
>
> ---
> crowd-funded eco-conscious hardware: https://www.crowdsupply.com/eoma68
>
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