dt-bindings: thermal: qcom-spmi-temp-alarm: Improve thermal zone in example

The current example for a thermal zone isn't very useful as reference
since it would result in a hardware shutdown at 145°C, instead of
allowing the system to try to shutdown gracefully. Without an ADC
channel a maximum of two trip points is useful in practice for this
sensor, with temperatures corresponding to the stage 1 and stage 2
'hardware trip points'. A critical trip point at stage 2 may allow the
system to shutdown before a hardware shutdown at stage 3 kicks in. It
should be noted though that by default the chip performs a 'partial
shutdown' when the temperature reaches stage 2, which may prevent an
orderly shutdown. The 'partial shutdown' can be disabled by software.

Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Eduardo Valentin <edubezval@gmail.com>

diff --git a/Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt b/Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt
index 86fb41fe772f9eba01647ee1d03e3a4b3d373f35..0273a92a2a849bb6bcc8b97f4291124b0eec2044 100644 (file)
--- a/Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt
+++ b/Documentation/devicetree/bindings/thermal/qcom-spmi-temp-alarm.txt
@@ -35,19 +35,14 @@ Example:
                        thermal-sensors = <&pm8941_temp>;
 
                        trips {
-                               passive {
-                                       temperature = <1050000>;
+                               stage1 {
+                                       temperature = <105000>;
                                        hysteresis = <2000>;
                                        type = "passive";
                                };
-                               alert {
+                               stage2 {
                                        temperature = <125000>;
                                        hysteresis = <2000>;
-                                       type = "hot";
-                               };
-                               crit {
-                                       temperature = <145000>;
-                                       hysteresis = <2000>;
                                        type = "critical";
                                };
                        };