The "critical" type trip in thermal zone can be
set to SOC_THERM hardware, it can trigger shut down
or reset event from hardware.

Signed-off-by: Wei Ni <[email protected]>
Acked-by: Rob Herring <[email protected]>
---
 Documentation/devicetree/bindings/thermal/tegra-soctherm.txt | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/Documentation/devicetree/bindings/thermal/tegra-soctherm.txt 
b/Documentation/devicetree/bindings/thermal/tegra-soctherm.txt
index 6b68cd150405..351a7376baa8 100644
--- a/Documentation/devicetree/bindings/thermal/tegra-soctherm.txt
+++ b/Documentation/devicetree/bindings/thermal/tegra-soctherm.txt
@@ -26,6 +26,10 @@ Required properties :
     of this property. See <dt-bindings/thermal/tegra124-soctherm.h> for a
     list of valid values when referring to thermal sensors.
 
+Note:
+- the "critical" type trip points will be set to SOC_THERM hardware as the
+shut down temperature. Once the temperature of this thermal zone is higher
+than it, the system will be shutdown or reset by hardware.
 
 Example :
 
@@ -51,5 +55,13 @@ Example: referring to thermal sensors :
 
                         thermal-sensors =
                                 <&soctherm TEGRA124_SOCTHERM_SENSOR_CPU>;
+
+                       trips {
+                               cpu_shutdown_trip: shutdown-trip {
+                                       temperature = <102500>;
+                                       hysteresis = <1000>;
+                                       type = "critical";
+                               };
+                       };
                 };
        };
-- 
1.9.1

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