Re: [PATCH] dt-bindings: thermal: Make cooling-maps property optional

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On Wed, May 15, 2019 at 05:36:47PM +0800, Yuantian Tang wrote:
> There may be no cooling device on system, or there are no enough
> cooling devices for each thermal zone in multiple thermal zone
> cases since cooling devices can't be shared.
> So make this property optional to remove such limitations.

Yeah, I am  not sure that is enough reason to make this property
optional. Let me maybe ask you why do you care creating a thermal
zone if your control has no actions? Or rather, why bothering
setting up a control that has no actuators?

> 
> Signed-off-by: Yuantian Tang <andy.tang@xxxxxxx>
> ---
>  .../devicetree/bindings/thermal/thermal.txt        |    4 ++--
>  1 files changed, 2 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt
> index ca14ba9..694e834 100644
> --- a/Documentation/devicetree/bindings/thermal/thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/thermal.txt
> @@ -142,11 +142,11 @@ Required properties:
>  - trips:		A sub-node which is a container of only trip point nodes
>    Type: sub-node	required to describe the thermal zone.
>  
> +
> +Optional property:
>  - cooling-maps:		A sub-node which is a container of only cooling device
>    Type: sub-node	map nodes, used to describe the relation between trips
>  			and cooling devices.
> -
> -Optional property:
>  - coefficients:		An array of integers (one signed cell) containing
>    Type: array		coefficients to compose a linear relation between
>    Elem size: one cell	the sensors listed in the thermal-sensors property.
> -- 
> 1.7.1
> 



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