Merge branch 'rcar-3.9.2/ems.rc1' into v4.14.75-ltsi/rcar-3.9.3

* rcar-3.9.2/ems.rc1:
  thermal: renesas: Add some property descriptions for emergency shutdown node
  thermal: renesas: Add emergency shutdown support in DT documentation

1 files changed, 36 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.txt b/Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.txt
index 24fc7e34dd6dc..261c3fedcf298 100644
--- a/Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.txt
+++ b/Documentation/devicetree/bindings/thermal/rcar-gen3-thermal.txt
@@ -55,3 +55,39 @@ Example:
 			};
 		};
 	};
+
+* Emergency shutdown for R-CAR Gen3
+Emergency shutdown functionality provides the specific cooling mechanism
+for R-CAR Gen3. In case of high temperature(e.g over 100 degrees),
+it has the ability to rapidly cool down the system.
+
+Required property:
+- polling-delay:	The maximum number of milliseconds to wait between polls
+  Type: unsigned	when checking temperature for emergency shutdown.
+  Size: one cell
+
+- on-temperature:       This value indicates the emergency temperature and invokes
+  Type: unsigned	emergency shutdown functionality when exceeding this
+  Size: one cell	temperature.
+
+- off-temperature:	This value indicates the temperature to disable emergency
+  Type: unsigned	shutdown.
+  Size: one cell
+
+- status:		Should be "disabled" always.
+  Type: string
+
+- target_cpus:		This property indicates which CPU will be targeted for shutdown.
+  Type: phandle
+
+thermal-zones {
+	emergency {
+		polling-delay = <1000>;    /* milliseconds */
+		on-temperature = <110000>; /* millicelsius */
+		off-temperature = <95000>; /* millicelsius */
+		target_cpus = <&a57_1>,
+			      <&a57_2>,
+			      <&a57_3>;
+		status = "disabled";
+	};
+};