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>
diff --git a/Documentation/devicetree/bindings/thermal/thermal.txt b/Documentation/devicetree/bindings/thermal/thermal.txt
index 8320186..41b817f 100644
--- a/Documentation/devicetree/bindings/thermal/thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/thermal.txt
@@ -60,14 +60,6 @@
For more examples of cooling devices, refer to the example sections below.
Required 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
-
- #cooling-cells: Used to provide cooling device specific information
Type: unsigned while referring to it. Must be at least 2, in order
Size: one cell to specify minimum and maximum cooling state used
@@ -77,6 +69,15 @@
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