1 files changed, 13 insertions, 0 deletions

diff --git a/Documentation/thermal/sysfs-api.txt b/Documentation/thermal/sysfs-api.txt
index 526d4b90d6c1..6859661c9d31 100644
--- a/Documentation/thermal/sysfs-api.txt
+++ b/Documentation/thermal/sysfs-api.txt
@@ -55,6 +55,8 @@ temperature) and throttle appropriate devices.
         .get_trip_type: get the type of certain trip point.
         .get_trip_temp: get the temperature above which the certain trip point
                         will be fired.
+        .set_emul_temp: set the emulation temperature which helps in debugging
+                        different threshold temperature points.
 
 1.1.2 void thermal_zone_device_unregister(struct thermal_zone_device *tz)
 
@@ -153,6 +155,7 @@ Thermal zone device sys I/F, created once it's registered:
     |---trip_point_[0-*]_temp:  Trip point temperature
     |---trip_point_[0-*]_type:  Trip point type
     |---trip_point_[0-*]_hyst:  Hysteresis value for this trip point
+    |---emul_temp:              Emulated temperature set node
 
 Thermal cooling device sys I/F, created once it's registered:
 /sys/class/thermal/cooling_device[0-*]:
@@ -252,6 +255,16 @@ passive
         Valid values: 0 (disabled) or greater than 1000
         RW, Optional
 
+emul_temp
+        Interface to set the emulated temperature method in thermal zone
+        (sensor). After setting this temperature, the thermal zone may pass
+        this temperature to platform emulation function if registered or
+        cache it locally. This is useful in debugging different temperature
+        threshold and its associated cooling action. This is write only node
+        and writing 0 on this node should disable emulation.
+        Unit: millidegree Celsius
+        WO, Optional
+
 *****************************
 * Cooling device attributes *
 *****************************