Open source Atheros wifi? (ath10k)

[Steven Mainor <steve@degga.net>]

I have a laptop with a QCA9377 Atheros AC wifi card. When I install 
debian 10.7 amd64 I get a warning about missing non-free firmware and 
the wifi doesn't work. It was my understanding that ath10k was open 
source and included in linux. Is this not the case?

If not is there any wireless AC card that doesn't require binary 
drivers? And barring that, what is the best wifi(N?) card I can buy that 
doesn't require closed source drivers/firmware?

--
Steven Mainor

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