On 18-02-18, 17:29, Rob Herring wrote:

On Fri, Feb 09, 2018 at 02:28:10PM +0530, Viresh Kumar wrote:

quoted

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.

Even they aren't using these properties. The gpio-fan binding[1] for
example uses the "gpio-fan,speed-map" property instead to find the
number of states it supports.

-- 
viresh

[1] Documentation/devicetree/bindings/gpio/gpio-fan.txt