[PATCH 0/3] PM / Domains: Add initial PM clock support to genpd

Geert Uytterhoeven geert at linux-m68k.org
Wed Nov 19 08:07:52 PST 2014

Hi Ulf,

On Wed, Nov 19, 2014 at 3:00 PM, Ulf Hansson <ulf.hansson at linaro.org> wrote:
> It's quite common for PM domains to use PM clocks. Typically from SOC specific
> code, the per device PM clock list is created and pm_clk_suspend|resume() are
> invoked to handle clock gating/ungating.
> A step towards consolidation is to integrate PM clock support into genpd, which
> is what this patchset does.

Thanks, this sounds like a good idea.

> In this initial step, the calls to the pm_clk_suspend|resume() are handled
> within genpd, but the per device PM clock list still needs to be created from
> SOC specific code. It seems reasonable to have gendp to handle that as well, but


> that left to future patchsets to address.

If/when genpd will handle the clock creation, perhaps the flag can just
be replaced by a pointer to a list of clocks?
Or do you have other uses in mind for adding the flags field now?



Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert at linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds

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