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-rw-r--r--Documentation/hwmon/sysfs-interface25
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