Re: [PATCH 1/3] dt-bindings: soc: renesas: add MFIS binding documentation

Wolfram Sang
2026-03-31T07:40:51Z

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> > In case you mean this as unanswered questions to v1: This describes the
> > device specific second mbox cell. Like Tegra does it here (even with
>
> I asked Linux ABI. Device specific numbers is not Linux ABI, because
> Linux is not device.

I have no idea what you want here. I see it like this: DT is OS
agnostic. So, the flags are to describe the hardware. The Linux driver
then does the proper things according to these flags. Other OS driver
might do other things.

> > shifts instead of plain numbers):
> >
> > include/dt-bindings/mailbox/tegra186-hsp.h

And I still have no idea why my header is different than the Tegra one.

> > I really have no idea what is still missing?
>
> It's not a binding, drop the header from the bindings.

So, I should add the header to the driver? Can do, but then I have to
remove the reference to the header from the binding doc. Namely, this
paragraph:

+ The first cell is the channel number as specified in the documentation
+ of the SoC. The second cell may specify flags as described in the file
+ <dt-bindings/soc/renesas,r8a78000-mfis.h>.

Not helpful for the user, or?

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