On Fri, Feb 09, 2018 at 02:28:10PM +0530, Viresh Kumar wrote:
> The "cooling-min-level" and "cooling-max-level" properties are not
> parsed by any part of kernel currently and the max cooling state of a
> CPU cooling device is found by referring to the cpufreq table instead.

What about non-CPU devices? A fan for example.

> 
> Remove the unused bindings.
> 
> Signed-off-by: Viresh Kumar <viresh.ku...@linaro.org>
> ---
>  Documentation/devicetree/bindings/thermal/thermal.txt | 16 +---------------
>  1 file changed, 1 insertion(+), 15 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt 
> b/Documentation/devicetree/bindings/thermal/thermal.txt
> index 1719d47a5e2f..cc553f0952c5 100644
> --- a/Documentation/devicetree/bindings/thermal/thermal.txt
> +++ b/Documentation/devicetree/bindings/thermal/thermal.txt
> @@ -55,8 +55,7 @@ of heat dissipation). For example a fan's cooling states 
> correspond to
>  the different fan speeds possible. Cooling states are referred to by
>  single unsigned integers, where larger numbers mean greater heat
>  dissipation. The precise set of cooling states associated with a device
> -(as referred to by the cooling-min-level and cooling-max-level
> -properties) should be defined in a particular device's binding.
> +should be defined in a particular device's binding.
>  For more examples of cooling devices, refer to the example sections below.
>  
>  Required properties:
> @@ -69,15 +68,6 @@ For more examples of cooling devices, refer to the example 
> sections below.
>                       See Cooling device maps section below for more details
>                       on how consumers refer to cooling devices.
>  
> -Optional properties:
> -- cooling-min-level: An integer indicating the smallest
> -  Type: unsigned     cooling state accepted. Typically 0.
> -  Size: one cell
> -
> -- cooling-max-level: An integer indicating the largest
> -  Type: unsigned     cooling state accepted.
> -  Size: one cell
> -
>  * Trip points
>  
>  The trip node is a node to describe a point in the temperature domain
> @@ -226,8 +216,6 @@ cpus {
>                       396000  950000
>                       198000  850000
>               >;
> -             cooling-min-level = <0>;
> -             cooling-max-level = <3>;
>               #cooling-cells = <2>; /* min followed by max */
>       };
>       ...
> @@ -241,8 +229,6 @@ cpus {
>        */
>       fan0: fan@48 {
>               ...
> -             cooling-min-level = <0>;
> -             cooling-max-level = <9>;
>               #cooling-cells = <2>; /* min followed by max */
>       };
>  };
> -- 
> 2.15.0.194.g9af6a3dea062
> 

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