hwmon: (pmbus) Add support for Infineon Digital Multi-phase xdp152 family controllers

Add support for devices XDPE152C4, XDPE12584.

Signed-off-by: Greg Schwendimann <Greg.Schwendimann@infineon.com>
Link: https://lore.kernel.org/r/5e6d50e9b28140158f339b0de343eea4@infineon.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

2 files changed, 119 insertions, 0 deletions

diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index 863b76289159..355c682f9ec4 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -223,6 +223,7 @@ Hardware Monitoring Kernel Drivers
    wm8350
    xgene-hwmon
    xdpe12284
+   xdpe152c4
    zl6100
 
 .. only::  subproject and html
diff --git a/Documentation/hwmon/xdpe152c4.rst b/Documentation/hwmon/xdpe152c4.rst
new file mode 100644
index 000000000000..ab92c32d4d69
--- /dev/null
+++ b/Documentation/hwmon/xdpe152c4.rst
@@ -0,0 +1,118 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver xdpe152
+=====================
+
+Supported chips:
+
+  * Infineon XDPE152C4
+
+    Prefix: 'xdpe152c4'
+
+  * Infineon XDPE15284
+
+    Prefix: 'xdpe15284'
+
+Authors:
+
+    Greg Schwendimann <greg.schwendimann@infineon.com>
+
+Description
+-----------
+
+This driver implements support for Infineon Digital Multi-phase Controller
+XDPE152C4 and XDPE15284 dual loop voltage regulators.
+The devices are compliant with:
+
+- Intel VR13, VR13HC and VR14 rev 1.86
+  converter specification.
+- Intel SVID rev 1.93. protocol.
+- PMBus rev 1.3.1 interface.
+
+Devices support linear format for reading input and output voltage, input
+and output current, input and output power and temperature.
+
+Devices support two pages for telemetry.
+
+The driver provides for current: input, maximum and critical thresholds
+and maximum and critical alarms. Low Critical thresholds and Low critical alarm are
+supported only for current output.
+The driver exports the following attributes for via the sysfs files, where
+indexes 1, 2 are for "iin" and 3, 4 for "iout":
+
+**curr[1-4]_crit**
+
+**curr[1-4]_crit_alarm**
+
+**curr[1-4]_input**
+
+**curr[1-4]_label**
+
+**curr[1-4]_max**
+
+**curr[1-4]_max_alarm**
+
+**curr[3-4]_lcrit**
+
+**curr[3-4]_lcrit_alarm**
+
+**curr[3-4]_rated_max**
+
+The driver provides for voltage: input, critical and low critical thresholds
+and critical and low critical alarms.
+The driver exports the following attributes for via the sysfs files, where
+indexes 1, 2 are for "vin" and 3, 4 for "vout":
+
+**in[1-4]_min**
+
+**in[1-4]_crit**
+
+**in[1-4_crit_alarm**
+
+**in[1-4]_input**
+
+**in[1-4]_label**
+
+**in[1-4]_max**
+
+**in[1-4]_max_alarm**
+
+**in[1-4]_min**
+
+**in[1-4]_min_alarm**
+
+**in[3-4]_lcrit**
+
+**in[3-4]_lcrit_alarm**
+
+**in[3-4]_rated_max**
+
+**in[3-4]_rated_min**
+
+The driver provides for power: input and alarms.
+The driver exports the following attributes for via the sysfs files, where
+indexes 1, 2 are for "pin" and 3, 4 for "pout":
+
+**power[1-2]_alarm**
+
+**power[1-4]_input**
+
+**power[1-4]_label**
+
+**power[1-4]_max**
+
+**power[1-4]_rated_max**
+
+The driver provides for temperature: input, maximum and critical thresholds
+and maximum and critical alarms.
+The driver exports the following attributes for via the sysfs files:
+
+**temp[1-2]_crit**
+
+**temp[1-2]_crit_alarm**
+
+**temp[1-2]_input**
+
+**temp[1-2]_max**
+
+**temp[1-2]_max_alarm**