Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver

From	Ulf Hansson <ulf.hansson@linaro.org>
Newsgroups	linux.kernel
Subject	Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver
Date	2016-09-08 11:30 +0200
Message-ID	<sf3OF-3Y8-1@gated-at.bofh.it> (permalink)
References	(3 earlier) <sayT7-5gm-9@gated-at.bofh.it> <sbXcJ-L7-13@gated-at.bofh.it> <sbXPr-1hr-13@gated-at.bofh.it> <sevai-6LS-15@gated-at.bofh.it> <sePVo-3mn-7@gated-at.bofh.it>
Organization	linux.* mail to news gateway

Show all headers | View raw

[...]

>
> One more idea...
>
> Since you don't really have a domain (a group of devices), what you
> really have is each device having an independent power switch, so as Ulf
> suggested, what you really need is for all the devices to share the same
> set of runtime PM callbacks that call SCI.  The only difference is the
> unique ID.
>
> Rather than using all of genpd, you could also just use a pm_domain
> which is what genpd is built on top of (and also omap_device, which
> you're probably familiar with also.)

Even if this would work as well, the downside would be that you need
to re-invent the parts related to the DT parsing, the probing/removal
and attaching/detaching of the device to the PM domain.

You probably don't want to go there... :-)

>
> That would allow you to keep the drivers completely generic, yet share
> all the SCI specific "domain" code inside a pm_domain.
>
> Kevin

Kind regards
Uffe

Thread

Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Dave Gerlach <d-gerlach@ti.com> - 2016-08-27 01:40 +0200
  Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Dave Gerlach <d-gerlach@ti.com> - 2016-08-30 21:50 +0200
    Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Ulf Hansson <ulf.hansson@linaro.org> - 2016-08-30 22:30 +0200
      Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Dave Gerlach <d-gerlach@ti.com> - 2016-09-06 22:30 +0200
        Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Kevin Hilman <khilman@baylibre.com> - 2016-09-07 20:40 +0200
          Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Ulf Hansson <ulf.hansson@linaro.org> - 2016-09-08 11:30 +0200
            Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Kevin Hilman <khilman@baylibre.com> - 2016-09-08 19:40 +0200
              Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Dave Gerlach <d-gerlach@ti.com> - 2016-09-08 20:10 +0200
              Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Ulf Hansson <ulf.hansson@linaro.org> - 2016-09-09 10:40 +0200
        Re: [PATCH 3/3] soc: ti: Add ti_sci_pm_domains driver Ulf Hansson <ulf.hansson@linaro.org> - 2016-09-08 11:20 +0200

csiph-web