of: thermal: Mark cooling-*-level properties optional
The cooling-{min,max}-level properties are marked as optional in Documentation/devicetree/bindings/cpufreq/cpufreq-dt.txt and the usage in various device tree matches this, i.e., some cooling device in the device trees provide these properties while others do not. Make the bindings in Documentation/devicetree/bindings/thermal/thermal.txt consistent with the cpufreq-dt bindings by marking the cooling-*-level properties as optional. Signed-off-by: Punit Agrawal <punit.agrawal@arm.com> Cc: Eduardo Valentin <edubezval@gmail.com> Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Signed-off-by: Rob Herring <robh@kernel.org>
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@ -60,14 +60,6 @@ properties) should be defined in a particular device's binding.
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For more examples of cooling devices, refer to the example sections below.
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Required properties:
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- cooling-min-level: An integer indicating the smallest
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Type: unsigned cooling state accepted. Typically 0.
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Size: one cell
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- cooling-max-level: An integer indicating the largest
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Type: unsigned cooling state accepted.
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Size: one cell
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- #cooling-cells: Used to provide cooling device specific information
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Type: unsigned while referring to it. Must be at least 2, in order
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Size: one cell to specify minimum and maximum cooling state used
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@ -77,6 +69,15 @@ Required properties:
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See Cooling device maps section below for more details
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on how consumers refer to cooling devices.
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Optional properties:
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- cooling-min-level: An integer indicating the smallest
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Type: unsigned cooling state accepted. Typically 0.
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Size: one cell
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- cooling-max-level: An integer indicating the largest
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Type: unsigned cooling state accepted.
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Size: one cell
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* Trip points
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The trip node is a node to describe a point in the temperature domain
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