1 files changed, 25 insertions, 0 deletions

diff --git a/Documentation/hwmon/sysfs-interface b/Documentation/hwmon/sysfs-interface
index 2f10ce6a879f..dcbd502c8792 100644
--- a/Documentation/hwmon/sysfs-interface
+++ b/Documentation/hwmon/sysfs-interface
@@ -70,6 +70,7 @@ are interpreted as 0! For more on how written strings are interpreted see the
 [0-*]   denotes any positive number starting from 0
 [1-*]   denotes any positive number starting from 1
 RO      read only value
+WO      write only value
 RW      read/write value
 
 Read/write values may be read-only for some chips, depending on the
@@ -150,6 +151,11 @@ fan[1-*]_min	Fan minimum value
                 Unit: revolution/min (RPM)
                 RW
 
+fan[1-*]_max    Fan maximum value
+                Unit: revolution/min (RPM)
+                Only rarely supported by the hardware.
+                RW
+
 fan[1-*]_input  Fan input value.
                 Unit: revolution/min (RPM)
                 RO
@@ -290,6 +296,24 @@ temp[1-*]_label	Suggested temperature channel label.
                 user-space.
                 RO
 
+temp[1-*]_lowest
+                Historical minimum temperature
+                Unit: millidegree Celsius
+                RO
+
+temp[1-*]_highest
+                Historical maximum temperature
+                Unit: millidegree Celsius
+                RO
+
+temp[1-*]_reset_history
+                Reset temp_lowest and temp_highest
+                WO
+
+temp_reset_history
+                Reset temp_lowest and temp_highest for all sensors
+                WO
+
 Some chips measure temperature using external thermistors and an ADC, and
 report the temperature measurement as a voltage. Converting this voltage
 back to a temperature (or the other way around for limits) requires
@@ -390,6 +414,7 @@ OR
 in[0-*]_min_alarm
 in[0-*]_max_alarm
 fan[1-*]_min_alarm
+fan[1-*]_max_alarm
 temp[1-*]_min_alarm
 temp[1-*]_max_alarm
 temp[1-*]_crit_alarm