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SubjectRe: [PATCH] ARM: dts: document pinctrl-single,pins when #pinctrl-cells = 2
* Trent Piepho <tpiepho@gmail.com> [200924 05:49]:
> On Wed, Sep 23, 2020 at 10:43 PM Tony Lindgren <tony@atomide.com> wrote:
> >
> > * Trent Piepho <tpiepho@gmail.com> [200924 01:34]:
> > > On Tue, Sep 22, 2020 at 11:57 PM Tony Lindgren <tony@atomide.com> wrote:
> > > >
> > > > Also FYI, folks have also complained for a long time that the pinctrl-single
> > > > binding mixes mux and conf values while they should be handled separately.
> > > >
> > >
> > > Instead of combining two fields when the dts is generated they are now
> > > combined when the pinctrl-single driver reads the dts. Other than
> > > this detail, the result is the same. The board dts source is the
> > > same. The value programmed into the pinctrl register is the same.
> > > There is no mechanism currently that can alter that value in any way.
> > >
> > > What does combining them later allow that is not possible now?
> >
> > It now allows further driver changes to manage conf and mux separately :)
>
> The pinctrl-single driver? How will that work with boards that are
> not am335x and don't use conf and mux fields in the same manner as
> am335x?

For those cases we still have #pinctrl-cells = <1>.

Regards,

Tony

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