hwmon: (ltc2978) Add support for LTC2975
LTC2975 is mostly compatible to LTC2974, but supports input current
and power measurement.
Tested-by: Michael Jones <mike@proclivis.com>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978
index ff13099..7e98288 100644
--- a/Documentation/hwmon/ltc2978
+++ b/Documentation/hwmon/ltc2978
@@ -6,6 +6,10 @@
Prefix: 'ltc2974'
Addresses scanned: -
Datasheet: http://www.linear.com/product/ltc2974
+ * Linear Technology LTC2975
+ Prefix: 'ltc2975'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltc2975
* Linear Technology LTC2977
Prefix: 'ltc2977'
Addresses scanned: -
@@ -42,7 +46,7 @@
Description
-----------
-LTC2974 is a quad digital power supply managers.
+LTC2974 and LTC2975 are quad digital power supply managers.
LTC2978 is an octal power supply monitor.
LTC2977 is a pin compatible replacement for LTC2978.
LTC3880, LTC3882, and LTC3887 are dual output poly-phase step-down DC/DC
@@ -71,23 +75,23 @@
in1_input Measured input voltage.
in1_min Minimum input voltage.
in1_max Maximum input voltage.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, and LTC2978 only.
in1_lcrit Critical minimum input voltage.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, and LTC2978 only.
in1_crit Critical maximum input voltage.
in1_min_alarm Input voltage low alarm.
in1_max_alarm Input voltage high alarm.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, and LTC2978 only.
in1_lcrit_alarm Input voltage critical low alarm.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, and LTC2978 only.
in1_crit_alarm Input voltage critical high alarm.
in1_lowest Lowest input voltage.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, and LTC2978 only.
in1_highest Highest input voltage.
in1_reset_history Reset input voltage history.
in[N]_label "vout[1-8]".
- LTC2974: N=2-5
+ LTC2974, LTC2975: N=2-5
LTC2977: N=2-9
LTC2978: N=2-9
LTC3880, LTC3882, LTC3887, LTM4676: N=2-3
@@ -101,13 +105,14 @@
in[N]_max_alarm Output voltage high alarm.
in[N]_lcrit_alarm Output voltage critical low alarm.
in[N]_crit_alarm Output voltage critical high alarm.
-in[N]_lowest Lowest output voltage. LTC2974 and LTC2978 only.
+in[N]_lowest Lowest output voltage. LTC2974, LTC2975,
+ and LTC2978 only.
in[N]_highest Highest output voltage.
in[N]_reset_history Reset output voltage history.
temp[N]_input Measured temperature.
- On LTC2974, temp[1-4] report external temperatures,
- and temp5 reports the chip temperature.
+ On LTC2974 and LTC2975, temp[1-4] report external
+ temperatures, and temp5 reports the chip temperature.
On LTC2977 and LTC2978, only one temperature measurement
is supported and reports the chip temperature.
On LTC3880, LTC3882, LTC3887, and LTM4676, temp1 and
@@ -120,23 +125,24 @@
temp[N]_lcrit Critical low temperature.
temp[N]_crit Critical high temperature.
temp[N]_min_alarm Temperature low alarm.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, and LTC2978 only.
temp[N]_max_alarm Temperature high alarm.
temp[N]_lcrit_alarm Temperature critical low alarm.
temp[N]_crit_alarm Temperature critical high alarm.
temp[N]_lowest Lowest measured temperature.
- LTC2974, LTC2977, and LTC2978 only.
- Not supported for chip temperature sensor on LTC2974.
+ LTC2974, LTC2975, LTC2977, and LTC2978 only.
+ Not supported for chip temperature sensor on LTC2974 and
+ LTC2975.
temp[N]_highest Highest measured temperature. Not supported for chip
- temperature sensor on LTC2974.
+ temperature sensor on LTC2974 and LTC2975.
temp[N]_reset_history Reset temperature history. Not supported for chip
- temperature sensor on LTC2974.
+ temperature sensor on LTC2974 and LTC2975.
power1_label "pin". LTC3883 only.
power1_input Measured input power.
power[N]_label "pout[1-4]".
- LTC2974: N=1-4
+ LTC2974, LTC2975: N=1-4
LTC2977: Not supported
LTC2978: Not supported
LTC3880, LTC3882, LTC3887, LTM4676: N=1-2
@@ -151,7 +157,7 @@
curr1_reset_history Reset input current history. LTC3883 only.
curr[N]_label "iout[1-4]".
- LTC2974: N=1-4
+ LTC2974, LTC2975: N=1-4
LTC2977: not supported
LTC2978: not supported
LTC3880, LTC3882, LTC3887, LTM4676: N=2-3
@@ -159,10 +165,11 @@
curr[N]_input Measured output current.
curr[N]_max Maximum output current.
curr[N]_crit Critical high output current.
-curr[N]_lcrit Critical low output current. LTC2974 only.
+curr[N]_lcrit Critical low output current. LTC2974 and LTC2975 only.
curr[N]_max_alarm Output current high alarm.
curr[N]_crit_alarm Output current critical high alarm.
-curr[N]_lcrit_alarm Output current critical low alarm. LTC2974 only.
-curr[N]_lowest Lowest output current. LTC2974 only.
+curr[N]_lcrit_alarm Output current critical low alarm.
+ LTC2974 and LTC2975 only.
+curr[N]_lowest Lowest output current. LTC2974 and LTC2975 only.
curr[N]_highest Highest output current.
curr[N]_reset_history Reset output current history.