Hi Marek,
On Wed, Jan 14, 2015 at 2:44 PM, Marek Szyprowski
<m.szyprowski@xxxxxxxxxxx> wrote:
> This patch adds a note on defining subdomains to generic PM domain
> binding documentation to let power domain providers use common approach
> for defining power domain hierarchy.
Thanks!
> Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
> ---
> .../devicetree/bindings/power/power_domain.txt | 29 ++++++++++++++++++++++
> 1 file changed, 29 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt
> index 98c1667..eeea45b 100644
> --- a/Documentation/devicetree/bindings/power/power_domain.txt
> +++ b/Documentation/devicetree/bindings/power/power_domain.txt
> @@ -19,6 +19,16 @@ Required properties:
> providing multiple PM domains (e.g. power controllers), but can be any value
> as specified by device tree binding documentation of particular provider.
>
> +Optional properties:
> + - power-domains : A phandle and PM domain specifier as defined by bindings of
> + the power controller specified by phandle.
> + Some power domains might be powered from other power domain (or have
s/other/another/
> + other hardware specific dependency). For representing such dependency
s/dependency/dependencies/ (twice)
> + a standard PM domain consumer binging is used. When provided, all domains
binding
> + created by the given provider should be a subdomain of the domain
s/a subdomain/subdomains/
> + specified by this binding. More details about power domain specifier is
s/is/are/
> + available in the the next section.
duplicate "the"
> +
> Example:
>
> power: power-controller@12340000 {
> @@ -30,6 +40,25 @@ Example:
> The node above defines a power controller that is a PM domain provider and
> expects one cell as its phandle argument.
>
> +Example 2:
> +
> + parent: power-controller@12340000 {
> + compatible = "foo,power-controller";
> + reg = <0x12340000 0x1000>;
> + #power-domain-cells = <1>;
> + };
> +
> + child: power-controller@12340000 {
> + compatible = "foo,power-controller";
> + reg = <0x12341000 0x1000>;
> + power-domains = <&parent 0>;
> + #power-domain-cells = <1>;
> + };
> +
> +The nodes above defines two power controllers: 'parent' and 'child'.
s/defines/define/
> +Domains created by 'child' power controller are subdomains of '0' power
the 'child' power controller
> +domain provided by 'parent' power controller.
the 'parent' power controller.
Gr{oetje,eeting}s,
Geert
--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx
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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