linux-kernel - Re: [PATCH v3 02/13] PM / Domains: Add DT bindings for power-on/off latencies

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Date:	Fri, 26 Sep 2014 10:19:50 +0200
From:	Ulf Hansson <ulf.hansson@...aro.org>
To:	Geert Uytterhoeven <geert+renesas@...der.be>
Cc:	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Simon Horman <horms@...ge.net.au>,
	Magnus Damm <magnus.damm@...il.com>,
	Tomasz Figa <tomasz.figa@...il.com>,
	Philipp Zabel <philipp.zabel@...il.com>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Kevin Hilman <khilman@...aro.org>,
	Linux-sh list <linux-sh@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3 02/13] PM / Domains: Add DT bindings for power-on/off latencies

On 25 September 2014 18:28, Geert Uytterhoeven <geert+renesas@...der.be> wrote:
> PM domain power on/off-latencies are properties of the hardware.
> In legacy code, they're specified from platform code.
> On DT platforms, their values should come from DT.
>
> Signed-off-by: Geert Uytterhoeven <geert+renesas@...der.be>
> Acked-by: Kevin Hilman <khilman@...aro.org>

Reviewed-by: Ulf Hansson <ulf.hansson@...aro.org>

> ---
> v3:
>   - No changes
> v2:
>   - Add Acked-by
>
>  Documentation/devicetree/bindings/power/power_domain.txt | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/power/power_domain.txt b/Documentation/devicetree/bindings/power/power_domain.txt
> index 98c16672ab5f49e0..7bc421d84367d636 100644
> --- a/Documentation/devicetree/bindings/power/power_domain.txt
> +++ b/Documentation/devicetree/bindings/power/power_domain.txt
> @@ -19,12 +19,18 @@ 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-on-latency: Power-on latency of the PM domain, in ns,
> + - power-off-latency: Power-off latency of the PM domain, in ns.
> +
>  Example:
>
>         power: power-controller@...40000 {
>                 compatible = "foo,power-controller";
>                 reg = <0x12340000 0x1000>;
>                 #power-domain-cells = <1>;
> +               power-on-latency = <250000>;
> +               power-off-latency = <250000>;
>         };
>
>  The node above defines a power controller that is a PM domain provider and
> --
> 1.9.1
>
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