On Dienstag, 21. März 2017 21:56:54 CET Rob Herring wrote:
[...]

Is this always the case? There's never some variation beyond the
reference design that a BDF difference can't handle?

I have no knowledge about anything which isn't handled directly by the BDF
variants. But maybe Kalle can correct me here.

[...]

quoted

They are basically "qcom,ipq4019-wifi" + a product specific string. The first
part is therefore the string which identifies the wifi device(s) in the
QCA4018/4019 SoC. The product specific string is simply the part (or a
variation of it) which would been used before in
"qcom,ath10k-calibration-variant" - just to make it "use a more specific
compatible string".

It would probably be more like: "asus,rt-ac58u-wifi", "qcom,ipq4019-wifi"

A more specific compatible is insurance that at some later point in
time you can distinguish between 2 boards due to some difference even
if now you believe they are "the same".

[...]

I think the separate property is fine if this is the only one you
envision needing to add. If there's 10 more properties, then I'd feel
more strongly towards a board specific compatible string.

Thank you. Let's wait a little bit in case someone from QCA/Codeaurora
has some additional input.

But your comments were really helpful.

Kind regards,
	Sven