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-rw-r--r--Documentation/hwmon/dell-smm-hwmon.rst7
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diff --git a/Documentation/hwmon/dell-smm-hwmon.rst b/Documentation/hwmon/dell-smm-hwmon.rst
index d3323a96665d..41839b7de2c1 100644
--- a/Documentation/hwmon/dell-smm-hwmon.rst
+++ b/Documentation/hwmon/dell-smm-hwmon.rst
@@ -86,6 +86,13 @@ probe the BIOS on your machine and discover the appropriate codes.
Again, when you find new codes, we'd be happy to have your patches!
+``thermal`` interface
+---------------------------
+
+The driver also exports the fans as thermal cooling devices with
+``type`` set to ``dell-smm-fan[1-3]``. This allows for easy fan control
+using one of the thermal governors.
+
Module parameters
-----------------