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hwmon: (pmbus/ltc2978): Add support for LTC2977

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LTC2977 is a pin compatible replacement for LTC2978.

Signed-off-by: Guenter Roeck <[email protected]>
This commit is contained in:
Guenter Roeck 2013-09-23 10:56:48 -07:00
commit c24c407e96
2 changed files with 36 additions and 17 deletions
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41
Documentation/hwmon/ltc2978
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@ -6,6 +6,10 @@ Supported chips:
Prefix: 'ltc2974'
Addresses scanned: -
Datasheet: http://www.linear.com/product/ltc2974
* Linear Technology LTC2977
Prefix: 'ltc2977'
Addresses scanned: -
Datasheet: http://www.linear.com/product/ltc2977
* Linear Technology LTC2978
Prefix: 'ltc2978'
Addresses scanned: -
@ -26,8 +30,9 @@ Description
-----------
LTC2974 is a quad digital power supply manager. LTC2978 is an octal power supply
monitor. LTC3880 is a dual output poly-phase step-down DC/DC controller. LTC3883
is a single phase step-down DC/DC controller.
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.
Usage Notes
@ -49,21 +54,25 @@ Sysfs attributes
in1_label "vin"
in1_input Measured input voltage.
in1_min Minimum input voltage.
in1_max Maximum input voltage. LTC2974 and LTC2978 only.
in1_lcrit Critical minimum input voltage. LTC2974 and LTC2978
only.
in1_max Maximum input voltage.
LTC2974, LTC2977, and LTC2978 only.
in1_lcrit Critical minimum input voltage.
LTC2974, 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 and LTC2978 only.
in1_lcrit_alarm Input voltage critical low alarm. LTC2974 and LTC2978
only.
in1_max_alarm Input voltage high alarm.
LTC2974, LTC2977, and LTC2978 only.
in1_lcrit_alarm Input voltage critical low alarm.
LTC2974, LTC2977, and LTC2978 only.
in1_crit_alarm Input voltage critical high alarm.
in1_lowest Lowest input voltage. LTC2974 and LTC2978 only.
in1_lowest Lowest input voltage.
LTC2974, 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
LTC2977: N=2-9
LTC2978: N=2-9
LTC3880: N=2-3
LTC3883: N=2
@ -83,21 +92,23 @@ 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 LTC2978, only one temperature measurement is
supported and 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
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 and LTC2978 only.
temp[N]_min Mimimum temperature. LTC2974, LCT2977, and LTC2978 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 and LTC2978 only.
temp[N]_min_alarm Temperature low alarm.
LTC2974, 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 and LTC2978 only.
temp[N]_lowest Lowest measured temperature.
LTC2974, LTC2977, and LTC2978 only.
Not supported for chip temperature sensor on LTC2974.
temp[N]_highest Highest measured temperature. Not supported for chip
temperature sensor on LTC2974.
@ -109,6 +120,7 @@ power1_input Measured input power.
power[N]_label "pout[1-4]".
LTC2974: N=1-4
LTC2977: Not supported
LTC2978: Not supported
LTC3880: N=1-2
LTC3883: N=2
@ -123,6 +135,7 @@ curr1_reset_history Reset input current history. LTC3883 only.
curr[N]_label "iout[1-4]".
LTC2974: N=1-4
LTC2977: not supported
LTC2978: not supported
LTC3880: N=2-3
LTC3883: N=2