hwmon: (max34440) Add support for MAX34446
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
diff --git a/Documentation/hwmon/max34440 b/Documentation/hwmon/max34440
index 36b335c..bbdf9bf 100644
--- a/Documentation/hwmon/max34440
+++ b/Documentation/hwmon/max34440
@@ -11,6 +11,11 @@
Prefixes: 'max34441'
Addresses scanned: -
Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34441.pdf
+ * Maxim MAX34446
+ PMBus Power-Supply Data Logger
+ Prefixes: 'max34446'
+ Addresses scanned: -
+ Datasheet: http://datasheets.maxim-ic.com/en/ds/MAX34446.pdf
Author: Guenter Roeck <guenter.roeck@ericsson.com>
@@ -19,8 +24,8 @@
-----------
This driver supports hardware montoring for Maxim MAX34440 PMBus 6-Channel
-Power-Supply Manager and MAX34441 PMBus 5-Channel Power-Supply Manager
-and Intelligent Fan Controller.
+Power-Supply Manager, MAX34441 PMBus 5-Channel Power-Supply Manager
+and Intelligent Fan Controller, and MAX34446 PMBus Power-Supply Data Logger.
The driver is a client driver to the core PMBus driver. Please see
Documentation/hwmon/pmbus for details on PMBus client drivers.
@@ -33,6 +38,13 @@
devices explicitly. Please see Documentation/i2c/instantiating-devices for
details.
+For MAX34446, the value of the currX_crit attribute determines if current or
+voltage measurement is enabled for a given channel. Voltage measurement is
+enabled if currX_crit is set to 0; current measurement is enabled if the
+attribute is set to a positive value. Power measurement is only enabled if
+channel 1 (3) is configured for voltage measurement, and channel 2 (4) is
+configured for current measurement.
+
Platform data support
---------------------
@@ -60,16 +72,27 @@
in[1-6]_highest Historical maximum voltage.
in[1-6]_reset_history Write any value to reset history.
+ MAX34446 only supports in[1-4].
+
curr[1-6]_label "iout[1-6]".
curr[1-6]_input Measured current. From READ_IOUT register.
curr[1-6]_max Maximum current. From IOUT_OC_WARN_LIMIT register.
curr[1-6]_crit Critical maximum current. From IOUT_OC_FAULT_LIMIT register.
curr[1-6]_max_alarm Current high alarm. From IOUT_OC_WARNING status.
curr[1-6]_crit_alarm Current critical high alarm. From IOUT_OC_FAULT status.
+curr[1-4]_average Historical average current (MAX34446 only).
curr[1-6]_highest Historical maximum current.
curr[1-6]_reset_history Write any value to reset history.
in6 and curr6 attributes only exist for MAX34440.
+ MAX34446 only supports curr[1-4].
+
+power[1,3]_label "pout[1,3]"
+power[1,3]_input Measured power.
+power[1,3]_average Historical average power.
+power[1,3]_highest Historical maximum power.
+
+ Power attributes only exist for MAX34446.
temp[1-8]_input Measured temperatures. From READ_TEMPERATURE_1 register.
temp1 is the chip's internal temperature. temp2..temp5
@@ -80,7 +103,9 @@
temp[1-8]_crit Critical high temperature. From OT_FAULT_LIMIT register.
temp[1-8]_max_alarm Temperature high alarm.
temp[1-8]_crit_alarm Temperature critical high alarm.
+temp[1-8]_average Historical average temperature (MAX34446 only).
temp[1-8]_highest Historical maximum temperature.
temp[1-8]_reset_history Write any value to reset history.
temp7 and temp8 attributes only exist for MAX34440.
+ MAX34446 only supports temp[1-3].