Documentation: devicetree: thermal: da9062/61 TJUNC temperature binding

Device tree binding information for DA9062 and DA9061 thermal junction
temperature monitor.

Binding descriptions for the DA9061 and DA9062 thermal TJUNC supervisor
device driver, using a single THERMAL_TRIP_HOT trip-wire and allowing for
a configurable polling period for over-temperature polling.

This patch also adds two examples, one for DA9062 and one for DA9061. The
DA9061 example uses a fall-back compatible string for the DA9062.

Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Steve Twiss <stwiss.opensource@diasemi.com>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

diff --git a/Documentation/devicetree/bindings/thermal/da9062-thermal.txt b/Documentation/devicetree/bindings/thermal/da9062-thermal.txt
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+* Dialog DA9062/61 TJUNC Thermal Module
+
+This module is part of the DA9061/DA9062. For more details about entire
+DA9062 and DA9061 chips see Documentation/devicetree/bindings/mfd/da9062.txt
+
+Junction temperature thermal module uses an interrupt signal to identify
+high THERMAL_TRIP_HOT temperatures for the PMIC device.
+
+Required properties:
+
+- compatible: should be one of the following valid compatible string lines:
+        "dlg,da9061-thermal", "dlg,da9062-thermal"
+        "dlg,da9062-thermal"
+
+Optional properties:
+
+- polling-delay-passive : Specify the polling period, measured in
+    milliseconds, between thermal zone device update checks.
+
+Example: DA9062
+
+       pmic0: da9062@58 {
+               thermal {
+                       compatible = "dlg,da9062-thermal";
+                       polling-delay-passive = <3000>;
+               };
+       };
+
+Example: DA9061 using a fall-back compatible for the DA9062 onkey driver
+
+       pmic0: da9061@58 {
+               thermal {
+                       compatible = "dlg,da9061-thermal", "dlg,da9062-thermal";
+                       polling-delay-passive = <3000>;
+               };
+       };