hwmon: (pmbus/pim4328) Add documentation for the pim4328 PMBus driver

Add documentation and index link for pim4328 PMBus driver.

Signed-off-by: Erik Rosen <[email protected]>
Signed-off-by: Guenter Roeck <[email protected]>

Documentation/hwmon/index.rst

@@ -151,6 +151,7 @@ Hardware Monitoring Kernel Drivers
  pc87360
  pc87427
  pcf8591
+ pim4328
  pm6764tr
  pmbus
  powr1220

Documentation/hwmon/pim4328.rst

@@ -0,0 +1,105 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver pim4328
+=====================
+
+Supported chips:
+
+ * Flex PIM4328
+
+ Prefix: 'pim4328', 'bmr455'
+
+ Addresses scanned: -
+
+ Datasheet:
+
+https://flexpowermodules.com/resources/fpm-techspec-pim4328
+
+ * Flex PIM4820
+
+ Prefixes: 'pim4820'
+
+ Addresses scanned: -
+
+ Datasheet: https://flexpowermodules.com/resources/fpm-techspec-pim4820
+
+ * Flex PIM4006, PIM4106, PIM4206, PIM4306, PIM4406
+
+ Prefixes: 'pim4006', 'pim4106', 'pim4206', 'pim4306', 'pim4406'
+
+ Addresses scanned: -
+
+ Datasheet: https://flexpowermodules.com/resources/fpm-techspec-pim4006
+
+Author: Erik Rosen <[email protected]>
+
+
+Description
+-----------
+
+This driver supports hardware monitoring for Flex PIM4328 and
+compatible digital power interface modules.
+
+The driver is a client driver to the core PMBus driver. Please see
+Documentation/hwmon/pmbus.rst and Documentation.hwmon/pmbus-core for details
+on PMBus client drivers.
+
+
+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.
+
+
+Platform data support
+---------------------
+
+The driver supports standard PMBus driver platform data.
+
+
+Sysfs entries
+-------------
+
+The following attributes are supported. All attributes are read-only.
+
+======================= ========================================================
+in1_label "vin"
+in1_input Measured input voltage.
+in1_alarm Input voltage alarm.
+
+in2_label "vin.0"
+in2_input Measured input voltage on input A.
+
+ PIM4328 and PIM4X06
+
+in3_label "vin.1"
+in3_input Measured input voltage on input B.
+
+ PIM4328 and PIM4X06
+
+in4_label "vcap"
+in4_input Measured voltage on holdup capacitor.
+
+ PIM4328
+
+curr1_label "iin.0"
+curr1_input Measured input current on input A.
+
+ PIM4X06
+
+curr2_label "iin.1"
+curr2_input Measured input current on input B.
+
+ PIM4X06
+
+currX_label "iout1"
+currX_input Measured output current.
+currX_alarm Output current alarm.
+
+ X is 1 for PIM4820, 3 otherwise.
+
+temp1_input Measured temperature.
+temp1_alarm High temperature alarm.
+======================= ========================================================