Re: [PATCH v3 3/3] clk: qcom: Add Global Clock controller (GCC) driver for SC7180

Stephen Boyd
2019-10-04T23:20:23Z

Quoting Taniya Das (2019-10-04 10:39:31)
> Hi Stephen,
>
> On 10/3/2019 9:31 PM, Stephen Boyd wrote:
> > Quoting Taniya Das (2019-10-03 03:31:15)
> >> Hi Stephen,
> >>
> >> On 10/1/2019 8:08 PM, Stephen Boyd wrote:
> >>>
> >>> Why do you want to keep them critical and registered? I'm suggesting
> >>> that any clk that is marked critical and doesn't have a parent should
> >>> instead become a register write in probe to turn the clk on.
> >>>
> >> Sure, let me do a one-time enable from probe for the clocks which
> >> doesn't have a parent.
> >> But I would now have to educate the clients of these clocks to remove
> >> using them.
> >>
> >
> > If anyone is using these clks we can return NULL from the provider for
> > the specifier so that we indicate there isn't support for them in the
> > kernel. At least I hope that code path still works given all the recent
> > changes to clk_get().
> >
>
> Could you please confirm if you are referring to update the below?

I wasn't suggesting that explicitly but sure. Something like this would
be necessary to make clk_get() pass back a NULL pointer to the caller.
Does everything keep working with this change?