linux-kernel - Re: [PATCH 1/2] dt-bindings: thermal: Allow multiple devices to share cooling map

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Date:   Mon, 16 Jul 2018 10:04:01 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Zhang Rui <rui.zhang@...el.com>,
        Eduardo Valentin <edubezval@...il.com>, robh@...nel.org
Cc:     linux-pm@...r.kernel.org,
        Vincent Guittot <vincent.guittot@...aro.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        devicetree@...r.kernel.org, olof@...om.net,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: thermal: Allow multiple devices to
 share cooling map

On 05-07-18, 10:39, Viresh Kumar wrote:
> Allow cooling devices sharing same trip point with same contribution
> value to share the cooling map as well. Otherwise the same information
> will be duplicated for each device sharing the trip point.
> 
> Signed-off-by: Viresh Kumar <viresh.kumar@...aro.org>
> ---
>  Documentation/devicetree/bindings/thermal/thermal.txt | 11 +++--------
>  1 file changed, 3 insertions(+), 8 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt
> index cc553f0952c5..eb7ee91556a5 100644
> --- a/Documentation/devicetree/bindings/thermal/thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/thermal.txt
> @@ -97,8 +97,8 @@ get assigned to trip points of the zone. The cooling devices are expected
>  to be loaded in the target system.
>  
>  Required properties:
> -- cooling-device:	A phandle of a cooling device with its specifier,
> -  Type: phandle +	referring to which cooling device is used in this
> +- cooling-device:	A list of phandles of cooling devices with their specifiers,
> +  Type: phandle +	referring to which cooling devices are used in this
>      cooling specifier	binding. In the cooling specifier, the first cell
>  			is the minimum cooling state and the second cell
>  			is the maximum cooling state used in this map.
> @@ -276,12 +276,7 @@ thermal-zones {
>  			};
>  			map1 {
>  				trip = <&cpu_alert1>;
> -				cooling-device = <&fan0 5 THERMAL_NO_LIMIT>;
> -			};
> -			map2 {
> -				trip = <&cpu_alert1>;
> -				cooling-device =
> -				    <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
> +				cooling-device = <&fan0 5 THERMAL_NO_LIMIT>, <&cpu0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
>  			};
>  		};
>  	};

Any objections to this ? Can you guys provide Acks ?

-- 
viresh