docs: hwmon: Add documentaion for acbel-fsg032 PSU

Add documentation changes for acbel-fsg032 psu

Signed-off-by: Lakshmi Yadlapati <lakshmiy@us.ibm.com>
Link: https://lore.kernel.org/r/20230413132627.3444119-5-lakshmiy@us.ibm.com
[groeck: Fixed alphabetic order in index.rst]
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Author: Lakshmi-y

Documentation/hwmon/acbel-fsg032.rst

@@ -0,0 +1,80 @@
+Kernel driver acbel-fsg032
+==========================
+
+Supported chips:
+
+  * ACBEL FSG032-00xG power supply.
+
+Author: Lakshmi Yadlapati <lakshmiy@us.ibm.com>
+
+Description
+-----------
+
+This driver supports ACBEL FSG032-00xG Power Supply. This driver
+is a client to the core PMBus driver.
+
+Usage Notes
+-----------
+
+This driver does not auto-detect devices. You will have to instantiate the
+devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
+details.
+
+Sysfs entries
+-------------
+
+The following attributes are supported:
+
+======================= ======================================================
+curr1_crit              Critical maximum current.
+curr1_crit_alarm        Input current critical alarm.
+curr1_input             Measured output current.
+curr1_label             "iin"
+curr1_max               Maximum input current.
+curr1_max_alarm         Maximum input current high alarm.
+curr1_rated_max         Maximum rated input current.
+curr2_crit              Critical maximum current.
+curr2_crit_alarm        Output current critical alarm.
+curr2_input             Measured output current.
+curr2_label             "iout1"
+curr2_max               Maximum output current.
+curr2_max_alarm         Output current high alarm.
+curr2_rated_max         Maximum rated output current.
+
+
+fan1_alarm              Fan 1 warning.
+fan1_fault	        Fan 1 fault.
+fan1_input	        Fan 1 speed in RPM.
+fan1_target             Set fan speed reference.
+
+in1_alarm               Input voltage under-voltage alarm.
+in1_input               Measured input voltage.
+in1_label               "vin"
+in1_rated_max           Maximum rated input voltage.
+in1_rated_min           Minimum rated input voltage.
+in2_crit                Critical maximum output voltage.
+in2_crit_alarm          Output voltage critical high alarm.
+in2_input               Measured output voltage.
+in2_label               "vout1"
+in2_lcrit               Critical minimum output voltage.
+in2_lcrit_alarm         Output voltage critical low alarm.
+in2_rated_max           Maximum rated output voltage.
+in2_rated_min           Minimum rated output voltage.
+
+power1_alarm            Input fault or alarm.
+power1_input            Measured input power.
+power1_label            "pin"
+power1_max              Input power limit.
+power1_rated_max        Maximum rated input power.
+power2_crit             Critical output power limit.
+power2_crit_alarm       Output power crit alarm limit exceeded.
+power2_input            Measured output power.
+power2_label            "pout"
+power2_max              Output power limit.
+power2_max_alarm        Output power high alarm.
+power2_rated_max        Maximum rated output power.
+
+temp[1-3]_input         Measured temperature.
+temp[1-2]_max           Maximum temperature.
+temp[1-3]_rated_max     Temperature high alarm.
+======================= ======================================================

Documentation/hwmon/index.rst

@@ -22,6 +22,7 @@ Hardware Monitoring Kernel Drivers
 
    abituguru
    abituguru3
+   acbel-fsg032
    acpi_power_meter
    ad7314
    adc128d818