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hwmon: (ltc2978) Add support for LTC3882

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LTC3882 is mostly compatible with LTC3880. Major differences are that it
does not measure the input current, and it no longer supports LTC's legacy
mechanism to identify the chip.

Signed-off-by: Guenter Roeck <linux@roeck-us.net>
This commit is contained in:
Guenter Roeck
2015-06-08 10:29:45 -07:00
parent 836954dadc
commit bf89386f16
3 changed files with 62 additions and 17 deletions
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Documentation/hwmon/ltc2978
+16 -10
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@@ -19,6 +19,10 @@ Supported chips:
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: -
@@ -34,11 +38,12 @@ 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 is a quad digital power supply managers.
LTC2978 is an octal power supply monitor.
LTC2977 is a pin compatible replacement for LTC2978.
LTC3880 and LTC3882 are dual output poly-phase step-down DC/DC controllers.
LTC3883 is a single phase step-down DC/DC controller.
LTM4676 is a dual 13A or single 26A uModule regulator.
Usage Notes
@@ -80,7 +85,7 @@ in[N]_label "vout[1-8]".
LTC2974: N=2-5
LTC2977: N=2-9
LTC2978: N=2-9
LTC3880, LTM4676: N=2-3
LTC3880, LTC3882, LTM4676: N=2-3
LTC3883: N=2
in[N]_input Measured output voltage.
in[N]_min Minimum output voltage.
@@ -100,8 +105,9 @@ 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 and LTM4676, temp1 and temp2 report external
temperatures, and temp3 reports the chip temperature.
On LTC3880, LTC3882, 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.
@@ -128,7 +134,7 @@ power[N]_label "pout[1-4]".
LTC2974: N=1-4
LTC2977: Not supported
LTC2978: Not supported
LTC3880, LTM4676: N=1-2
LTC3880, LTC3882, LTM4676: N=1-2
LTC3883: N=2
power[N]_input Measured output power.
@@ -143,7 +149,7 @@ curr[N]_label "iout[1-4]".
LTC2974: N=1-4
LTC2977: not supported
LTC2978: not supported
LTC3880, LTM4676: N=2-3
LTC3880, LTC3882, LTM4676: N=2-3
LTC3883: N=2
curr[N]_input Measured output current.
curr[N]_max Maximum output current.