hwmon: (pmbus/ltc2978) Clean up documentation

Some sysfs attributes are only supported on LTC2978 and not on LTC3880.
Update documentation to reflect which attributes are supported for which chips.

Output current attributes supported on LTC3880 were described as providing
input current values. Fix text to reflect that the attributes provide output
current values.

"reset history" attribute descriptions were misleading and seemed to imply
that all history was reset when writing a single attribute. Replace with more
accurate text.

Replace 'internal temperature" with "chip temperature". Temperature limits
not only apply to the chip temperature, but also to external temperatures
on LTC3880, so remove the word "chip" from the attribute description.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>

diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978
index e4d75c606c97e88f9a45c2dfd956931b568b28e7..dcb10be36e7f78702d188fb5d7d76d938d9e73fa 100644 (file)
--- a/Documentation/hwmon/ltc2978
+++ b/Documentation/hwmon/ltc2978
@@ -41,17 +41,16 @@ Sysfs attributes
 in1_label              "vin"
 in1_input              Measured input voltage.
 in1_min                        Minimum input voltage.
-in1_max                        Maximum input voltage.
-in1_lcrit              Critical minimum input voltage.
+in1_max                        Maximum input voltage. LTC2978 only.
+in1_lcrit              Critical minimum input voltage. LTC2978 only.
 in1_crit               Critical maximum input voltage.
 in1_min_alarm          Input voltage low alarm.
-in1_max_alarm          Input voltage high alarm.
-in1_lcrit_alarm                Input voltage critical low alarm.
+in1_max_alarm          Input voltage high alarm. LTC2978 only.
+in1_lcrit_alarm                Input voltage critical low alarm. LTC2978 only.
 in1_crit_alarm         Input voltage critical high alarm.
 in1_lowest             Lowest input voltage. LTC2978 only.
 in1_highest            Highest input voltage.
-in1_reset_history      Reset history. Writing into this attribute will reset
-                       history for all attributes.
+in1_reset_history      Reset input voltage history.
 
 in[2-9]_label          "vout[1-8]". Channels 3 to 9 on LTC2978 only.
 in[2-9]_input          Measured output voltage.
@@ -65,27 +64,25 @@ in[2-9]_lcrit_alarm Output voltage critical low alarm.
 in[2-9]_crit_alarm     Output voltage critical high alarm.
 in[2-9]_lowest         Lowest output voltage. LTC2978 only.
 in[2-9]_highest                Lowest output voltage.
-in[2-9]_reset_history  Reset history. Writing into this attribute will reset
-                       history for all attributes.
+in[2-9]_reset_history  Reset output voltage history.
 
 temp[1-3]_input                Measured temperature.
                        On LTC2978, only one temperature measurement is
-                       supported and reflects the internal temperature.
+                       supported and reports the chip temperature.
                        On LTC3880, temp1 and temp2 report external
-                       temperatures, and temp3 reports the internal
+                       temperatures, and temp3 reports the chip
                        temperature.
-temp[1-3]_min          Mimimum temperature.
+temp[1-3]_min          Mimimum temperature. LTC2978 only.
 temp[1-3]_max          Maximum temperature.
 temp[1-3]_lcrit                Critical low temperature.
 temp[1-3]_crit         Critical high temperature.
-temp[1-3]_min_alarm    Chip temperature low alarm.
-temp[1-3]_max_alarm    Chip temperature high alarm.
-temp[1-3]_lcrit_alarm  Chip temperature critical low alarm.
-temp[1-3]_crit_alarm   Chip temperature critical high alarm.
+temp[1-3]_min_alarm    Temperature low alarm. LTC2978 only.
+temp[1-3]_max_alarm    Temperature high alarm.
+temp[1-3]_lcrit_alarm  Temperature critical low alarm.
+temp[1-3]_crit_alarm   Temperature critical high alarm.
 temp[1-3]_lowest       Lowest measured temperature. LTC2978 only.
 temp[1-3]_highest      Highest measured temperature.
-temp[1-3]_reset_history        Reset history. Writing into this attribute will reset
-                       history for all attributes.
+temp[1-3]_reset_history        Reset temperature history.
 
 power[1-2]_label       "pout[1-2]". LTC3880 only.
 power[1-2]_input       Measured power.
@@ -96,8 +93,8 @@ curr1_max             Maximum input current.
 curr1_max_alarm                Input current high alarm.
 
 curr[2-3]_label                "iout[1-2]". LTC3880 only.
-curr[2-3]_input                Measured input current.
-curr[2-3]_max          Maximum input current.
-curr[2-3]_crit         Critical input current.
-curr[2-3]_max_alarm    Input current high alarm.
-curr[2-3]_crit_alarm   Input current critical high alarm.
+curr[2-3]_input                Measured output current.
+curr[2-3]_max          Maximum output current.
+curr[2-3]_crit         Critical output current.
+curr[2-3]_max_alarm    Output current high alarm.
+curr[2-3]_crit_alarm   Output current critical high alarm.