Re: [RFC 4/4] ARM: shmobile: r8a7790: adapt DTS for I2C slave support

Wolfram Sang
2014-09-11T14:54:09Z

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On Thu, Sep 11, 2014 at 04:52:22PM +0200, Marc Dietrich wrote:
> Am Donnerstag, 11. September 2014, 16:40:04 schrieb Wolfram Sang:
> > > b) could be seen as a configuration thing since the functionality
> > > backend could be changed at runtime even.
> >
> > Come to think of it, not only the functionality, also the address can be
> > changed at runtime. This makes me think it should really not be in DT
> > after all.
>
> even worse, there can be multiple masters and slaves changing their role on
> the fly AFAIK. So the best dt can do is to provide an initial configuration,
> so all drivers know where they are and where to start. Everything else can be
> changed during runtime.

Why do you want DT to be involved at all?

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