path: root/Documentation/hwmon
diff options
authorGuenter Roeck <>2014-03-05 21:23:01 -0800
committerGuenter Roeck <>2014-03-19 18:59:40 -0700
commitf76992b00a4111fc4679b0b2d49fe75f05c2b04d (patch)
treedd188d5108dfee2f8f525833bb359b8d9b8b1c8c /Documentation/hwmon
parenta2e151074366487dcde943fdc08d88acfe476f9d (diff)
hwmon: (pmbus/ltc2978) Add support for LTM4676
The chip's programming interface is quite similar to LTC3880 and supports the same set of sensors. Reviewed-by: Robert Coulson <> Signed-off-by: Guenter Roeck <>
Diffstat (limited to 'Documentation/hwmon')
1 files changed, 11 insertions, 6 deletions
diff --git a/Documentation/hwmon/ltc2978 b/Documentation/hwmon/ltc2978
index a0546fc42273..686c078bb0e0 100644
--- a/Documentation/hwmon/ltc2978
+++ b/Documentation/hwmon/ltc2978
@@ -23,6 +23,10 @@ Supported chips:
Prefix: 'ltc3883'
Addresses scanned: -
+ * Linear Technology LTM4676
+ Prefix: 'ltm4676'
+ Addresses scanned: -
+ Datasheet:
Author: Guenter Roeck <>
@@ -33,7 +37,8 @@ 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.
+step-down DC/DC controller. LTM4676 is a dual 13A or single 26A uModule
Usage Notes
@@ -75,7 +80,7 @@ in[N]_label "vout[1-8]".
LTC2974: N=2-5
LTC2977: N=2-9
LTC2978: N=2-9
- LTC3880: N=2-3
+ LTC3880, LTM4676: N=2-3
LTC3883: N=2
in[N]_input Measured output voltage.
in[N]_min Minimum output voltage.
@@ -95,7 +100,7 @@ temp[N]_input Measured temperature.
and temp5 reports the chip temperature.
On LTC2977 and LTC2978, only one temperature measurement
is supported and reports the chip temperature.
- On LTC3880, temp1 and temp2 report external
+ On LTC3880 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.
@@ -123,11 +128,11 @@ power[N]_label "pout[1-4]".
LTC2974: N=1-4
LTC2977: Not supported
LTC2978: Not supported
- LTC3880: N=1-2
+ LTC3880, LTM4676: N=1-2
LTC3883: N=2
power[N]_input Measured output power.
-curr1_label "iin". LTC3880 and LTC3883 only.
+curr1_label "iin". LTC3880, LTC3883, and LTM4676 only.
curr1_input Measured input current.
curr1_max Maximum input current.
curr1_max_alarm Input current high alarm.
@@ -138,7 +143,7 @@ curr[N]_label "iout[1-4]".
LTC2974: N=1-4
LTC2977: not supported
LTC2978: not supported
- LTC3880: N=2-3
+ LTC3880, LTM4676: N=2-3
LTC3883: N=2
curr[N]_input Measured output current.
curr[N]_max Maximum output current.