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-rw-r--r--kernel/Documentation/hwmon/ltc2978132
1 files changed, 93 insertions, 39 deletions
diff --git a/kernel/Documentation/hwmon/ltc2978 b/kernel/Documentation/hwmon/ltc2978
index 686c078bb..9a49d3c90 100644
--- a/kernel/Documentation/hwmon/ltc2978
+++ b/kernel/Documentation/hwmon/ltc2978
@@ -6,6 +6,10 @@ Supported chips:
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: -
@@ -15,14 +19,38 @@ Supported chips:
Addresses scanned: -
Datasheet: http://www.linear.com/product/ltc2978
http://www.linear.com/product/ltc2978a
+ * Linear Technology LTC2980
+ Prefix: 'ltc2980'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltc2980
* Linear Technology LTC3880
Prefix: 'ltc3880'
Addresses scanned: -
Datasheet: http://www.linear.com/product/ltc3880
+ * Linear Technology LTC3882
+ Prefix: 'ltc3882'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltc3882
* Linear Technology LTC3883
Prefix: 'ltc3883'
Addresses scanned: -
Datasheet: http://www.linear.com/product/ltc3883
+ * Linear Technology LTC3886
+ Prefix: 'ltc3886'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltc3886
+ * Linear Technology LTC3887
+ Prefix: 'ltc3887'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltc3887
+ * Linear Technology LTM2987
+ Prefix: 'ltm2987'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltm2987
+ * Linear Technology LTM4675
+ Prefix: 'ltm4675'
+ Addresses scanned: -
+ Datasheet: http://www.linear.com/product/ltm4675
* Linear Technology LTM4676
Prefix: 'ltm4676'
Addresses scanned: -
@@ -34,11 +62,20 @@ Author: Guenter Roeck <linux@roeck-us.net>
Description
-----------
-LTC2974 is a quad digital power supply manager. LTC2978 is an octal power supply
-monitor. LTC2977 is a pin compatible replacement for LTC2978. LTC3880 is a dual
-output poly-phase step-down DC/DC controller. LTC3883 is a single phase
-step-down DC/DC controller. LTM4676 is a dual 13A or single 26A uModule
-regulator.
+LTC2974 and LTC2975 are quad digital power supply managers.
+LTC2978 is an octal power supply monitor.
+LTC2977 is a pin compatible replacement for LTC2978.
+LTC2980 is a 16-channel Power System Manager, consisting of two LTC2977
+in a single die. The chip is instantiated and reported as two separate chips
+on two different I2C bus addresses.
+LTC3880, LTC3882, LTC3886, and LTC3887 are dual output poly-phase step-down
+DC/DC controllers.
+LTC3883 is a single phase step-down DC/DC controller.
+LTM2987 is a 16-channel Power System Manager with two LTC2977 plus
+additional components on a single die. The chip is instantiated and reported
+as two separate chips on two different I2C bus addresses.
+LTM4675 is a dual 9A or single 18A μModule regulator
+LTM4676 is a dual 13A or single 26A uModule regulator.
Usage Notes
@@ -61,26 +98,32 @@ in1_label "vin"
in1_input Measured input voltage.
in1_min Minimum input voltage.
in1_max Maximum input voltage.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
+ LTM2987 only.
in1_lcrit Critical minimum input voltage.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
+ LTM2987 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, LTC2980, LTC2978, and
+ LTM2987 only.
in1_lcrit_alarm Input voltage critical low alarm.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
+ LTM2987 only.
in1_crit_alarm Input voltage critical high alarm.
in1_lowest Lowest input voltage.
- LTC2974, LTC2977, and LTC2978 only.
+ LTC2974, LTC2975, LTC2977, LTC2980, LTC2978, and
+ LTM2987 only.
in1_highest Highest input voltage.
in1_reset_history Reset input voltage history.
in[N]_label "vout[1-8]".
- LTC2974: N=2-5
- LTC2977: N=2-9
+ LTC2974, LTC2975: N=2-5
+ LTC2977, LTC2980, LTM2987: N=2-9
LTC2978: N=2-9
- LTC3880, LTM4676: N=2-3
+ LTC3880, LTC3882, LTC23886 LTC3887, LTM4675, LTM4676:
+ N=2-3
LTC3883: N=2
in[N]_input Measured output voltage.
in[N]_min Minimum output voltage.
@@ -91,67 +134,78 @@ in[N]_min_alarm Output voltage low alarm.
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 LTC2977 and LTC2978, only one temperature measurement
- is supported and reports the chip temperature.
- On LTC3880 and LTM4676, temp1 and temp2 report external
- temperatures, and temp3 reports the chip temperature.
+ On LTC2974 and LTC2975, temp[1-4] report external
+ temperatures, and temp5 reports the chip temperature.
+ On LTC2977, LTC2980, LTC2978, and LTM2987, only one
+ temperature measurement is supported and reports
+ the chip temperature.
+ On LTC3880, LTC3882, LTC3887, LTM4675, and LTM4676,
+ temp1 and temp2 report external temperatures, and temp3
+ reports the chip temperature.
On LTC3883, temp1 reports an external temperature,
and temp2 reports the chip temperature.
-temp[N]_min Mimimum temperature. LTC2974, LCT2977, and LTC2978 only.
+temp[N]_min Mimimum temperature. LTC2974, LCT2977, LTM2980, LTC2978,
+ and LTM2987 only.
temp[N]_max Maximum temperature.
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, LTM2980, LTC2978, and
+ LTM2987 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, LTM2980, LTC2978, and
+ LTM2987 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_label "pin". LTC3883 and LTC3886 only.
power1_input Measured input power.
power[N]_label "pout[1-4]".
- LTC2974: N=1-4
- LTC2977: Not supported
+ LTC2974, LTC2975: N=1-4
+ LTC2977, LTC2980, LTM2987: Not supported
LTC2978: Not supported
- LTC3880, LTM4676: N=1-2
+ LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676:
+ N=1-2
LTC3883: N=2
power[N]_input Measured output power.
-curr1_label "iin". LTC3880, LTC3883, and LTM4676 only.
+curr1_label "iin". LTC3880, LTC3883, LTC3886, LTC3887, LTM4675,
+ and LTM4676 only.
curr1_input Measured input current.
curr1_max Maximum input current.
curr1_max_alarm Input current high alarm.
-curr1_highest Highest input current. LTC3883 only.
-curr1_reset_history Reset input current history. LTC3883 only.
+curr1_highest Highest input current. LTC3883 and LTC3886 only.
+curr1_reset_history Reset input current history. LTC3883 and LTC3886 only.
curr[N]_label "iout[1-4]".
- LTC2974: N=1-4
- LTC2977: not supported
+ LTC2974, LTC2975: N=1-4
+ LTC2977, LTC2980, LTM2987: not supported
LTC2978: not supported
- LTC3880, LTM4676: N=2-3
+ LTC3880, LTC3882, LTC3886, LTC3887, LTM4675, LTM4676:
+ N=2-3
LTC3883: N=2
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.