On Wed, Oct 5, 2016 at 10:31 PM, Lina Iyer <lina.iyer@xxxxxxxxxx> wrote:
> Update DT bindings to describe idle states of PM domains.
>
> This patch is based on the original patch by Marc Titinger.
>
> Cc: <devicetree@xxxxxxxxxxxxxxx>
> Signed-off-by: Marc Titinger <mtitinger+renesas@xxxxxxxxxxxx>
> Signed-off-by: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
> Signed-off-by: Lina Iyer <lina.iyer@xxxxxxxxxx>
> Acked-by: Rob Herring <robh@xxxxxxxxxx>
> ---
> .../devicetree/bindings/power/power_domain.txt | 36 ++++++++++++++++++++++
> 1 file changed, 36 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt
> index 025b5e7..a043315 100644
> --- a/Documentation/devicetree/bindings/power/power_domain.txt
> +++ b/Documentation/devicetree/bindings/power/power_domain.txt
> @@ -29,6 +29,10 @@ Optional properties:
> specified by this binding. More details about power domain specifier are
> available in the next section.
>
> +- domain-idle-states : A phandle of an idle-state that shall be soaked into a
> + generic domain power state. The idle state definitions are
> + compatible with arm,idle-state specified in [1].
> +
> Example:
>
> power: power-controller@12340000 {
> @@ -59,6 +63,36 @@ The nodes above define two power controllers: 'parent' and 'child'.
> Domains created by the 'child' power controller are subdomains of '0' power
> domain provided by the 'parent' power controller.
>
> +Example 3:
> + parent: power-controller@12340000 {
With W=1, this is gonna trigger:
Warning (unit_address_vs_reg): Node foo has a unit name, but no reg property
Yes, there are pre-existing users in this file.
> + compatible = "foo,power-controller";
> + reg = <0x12340000 0x1000>;
> + #power-domain-cells = <1>;
> + domain-idle-states = <&DOMAIN_RET, &DOMAIN_PWR_DN>;
> + };
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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