Re: [PATCH 03/17] ARM: dts: r8a7742: Add I2C and IIC support

Wolfram Sang
2020-05-18T09:26:14Z

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> > However, both versions (with and without automatic transmission) are
> > described with the same "renesas,iic-r8a7742" compatible. Is it possible
> > to detect the reduced variant at runtime somehow?
> >
> I couldn't find anything the manual that would be useful to detect at runtime.
>
> > My concern is that the peculiarity of this SoC might be forgotten if we
> > describe it like this and ever add "automatic transmissions" somewhen.
> >
> Agreed.

Well, I guess reading from a register which is supposed to not be there
on the modified IP core is too hackish.

Leaves us with a seperate compatible entry for it?

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