Re: [PATCH v3 1/2] [RFT] clk: samsung: add support for CPU clocks

[Sylwester Nawrocki]

On 14.10.2021 23:40, Stephen Boyd wrote:
> Quoting Will McVicker (2021-10-14 12:35:57)
> > On Wed, Oct 13, 2021 at 6:49 PM Stephen Boyd <sboyd@xxxxxxxxxx> wrote:
> > > Quoting Will McVicker (2021-10-13 15:10:19)
> > > > diff --git a/drivers/clk/samsung/clk-cpu.c b/drivers/clk/samsung/clk-cpu.c

> > > > +               if (parent_clk)
> > > > +                       parent_clk_hw = __clk_get_hw(parent_clk);
> > > > +               alt_parent_clk = __clk_lookup(list->alt_parent_name);
> > >
> > > Can the DT binding be updated?
> >
> > Are you referring to removing alt_parent and just adding it as another
> > parent clock?
>
> I was wondering if this is an external clk that feeds into here or if it
> is all internal to the clk controller. It sounds like it's all internal
> to the clk controller? In which case a binding update isn't needed.

Yes, I double checked and the cpu parent clocks are always internal to
the clock provider. There is one exception where physically a parent clock
comes from other CMU (exynos5250), but in that case all CMUs are modeled
as a single clk provider anyway. Thus we don't need a binding update.