Re: [PATCH 1/2] dt-bindings: net: wireless: ath11k: add new DT entry for board ID

[Robert Marko]

On Mon, 27 Jun 2022 at 12:27, Kalle Valo <kvalo@xxxxxxxxxx> wrote:
>
> Robert Marko <robimarko@xxxxxxxxx> writes:
>
> > bus + qmi-chip-id + qmi-board-id and optionally the variant are currently
> > used for identifying the correct board data file.
> >
> > This however is sometimes not enough as all of the IPQ8074 boards that I
> > have access to dont have the qmi-board-id properly fused and simply return
> > the default value of 0xFF.
> >
> > So, to provide the correct qmi-board-id add a new DT property that allows
> > the qmi-board-id to be overridden from DTS in cases where its not set.
> > This is what vendors have been doing in the stock firmwares that were
> > shipped on boards I have.
>
> What's wrong with using 0xff? Ie. something like this:
>
> bus=ahb,qmi-chip-id=0,qmi-board-id=255,variant=foo
>
> Or maybe even just skip qmi-board-id entirely if it's not supported? So
> that the board file string would be something like:
>
> bus=ahb,qmi-chip-id=0,variant=foo
>
> I really would like to avoid adding more DT properties unless it's
> absolutely critical.

Well, I suppose that due to the variant property we can avoid "correcting" the
qmi-board-id

Regards,
Robert
>
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>
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