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authorLinus Torvalds <torvalds@linux-foundation.org>2022-05-24 14:23:10 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2022-05-24 14:23:10 -0700
commit076f222a690e11b433d2b1e218dbd9bdb08fb190 (patch)
treeb0d0e04f6e5aca9f7bcb6f00f00f8814ca74b5ab /Documentation
parent0350785b0a092c99c5ddd2ace0260dbe7b3f919f (diff)
parent8877ecb0fc8d7662218a8e7ebb0650f320467935 (diff)
Merge tag 'hwmon-for-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck: "New drivers: - Driver for the Microchip LAN966x SoC - PMBus driver for Infineon Digital Multi-phase xdp152 family controllers Chip support added to existing drivers: - asus-ec-sensors: - Support for ROG STRIX X570-E GAMING WIFI II, PRIME X470-PRO, and ProArt X570 Creator WIFI - External temperature sensor support for ASUS WS X570-ACE - nct6775: - Support for I2C driver - Support for ASUS PRO H410T / PRIME H410M-R / ROG X570-E GAMING WIFI II - lm75: - Support for - Atmel AT30TS74 - pmbus/max16601: - Support for MAX16602 - aquacomputer_d5next: - Support for Aquacomputer Farbwerk - Support for Aquacomputer Octo - jc42: - Support for S-34TS04A Kernel API changes / clarifications: - The chip parameter of with_info API is now mandatory - New hwmon_device_register_for_thermal API call for use by the thermal subsystem Improvements: - PMBus and JC42 drivers now register with thermal subsystem - PMBus drivers now support get_voltage/set_voltage power operations - The adt7475 driver now supports pin configuration - The lm90 driver now supports setting extended range temperatures configuration with a devicetree property - The dell-smm driver now registers as cooling device - The OCC driver delays hwmon registration until requested by userspace ... and various other minor fixes and improvements" * tag 'hwmon-for-v5.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (71 commits) hwmon: (aquacomputer_d5next) Fix an error handling path in aqc_probe() hwmon: (sl28cpld) Fix typo in comment hwmon: (pmbus) Check PEC support before reading other registers hwmon: (dimmtemp) Fix bitmap handling hwmon: (lm90) enable extended range according to DTS node dt-bindings: hwmon: lm90: add ti,extended-range-enable property dt-bindings: hwmon: lm90: add missing ti,tmp461 hwmon: (ibmaem) Directly use ida_alloc()/free() hwmon: Directly use ida_alloc()/free() hwmon: (asus-ec-sensors) fix Formula VIII definition dt-bindings: trivial-devices: Add xdp152 hwmon: (sl28cpld-hwmon) Use HWMON_CHANNEL_INFO macro hwmon: (pwm-fan) Use HWMON_CHANNEL_INFO macro hwmon: (peci/dimmtemp) Use HWMON_CHANNEL_INFO macro hwmon: (peci/cputemp) Use HWMON_CHANNEL_INFO macro hwmon: (mr75203) Use HWMON_CHANNEL_INFO macro hwmon: (ltc2992) Use HWMON_CHANNEL_INFO macro hwmon: (as370-hwmon) Use HWMON_CHANNEL_INFO macro hwmon: Make chip parameter for with_info API mandatory thermal/drivers/thermal_hwmon: Use hwmon_device_register_for_thermal() ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/hwmon/adt7475.yaml22
-rw-r--r--Documentation/devicetree/bindings/hwmon/lm75.yaml1
-rw-r--r--Documentation/devicetree/bindings/hwmon/microchip,lan966x.yaml53
-rw-r--r--Documentation/devicetree/bindings/hwmon/national,lm90.yaml20
-rw-r--r--Documentation/devicetree/bindings/hwmon/nuvoton,nct6775.yaml57
-rw-r--r--Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml105
-rw-r--r--Documentation/devicetree/bindings/trivial-devices.yaml4
-rw-r--r--Documentation/hwmon/aquacomputer_d5next.rst7
-rw-r--r--Documentation/hwmon/asus_ec_sensors.rst25
-rw-r--r--Documentation/hwmon/dell-smm-hwmon.rst9
-rw-r--r--Documentation/hwmon/hwmon-kernel-api.rst18
-rw-r--r--Documentation/hwmon/index.rst2
-rw-r--r--Documentation/hwmon/lan966x.rst40
-rw-r--r--Documentation/hwmon/max16601.rst8
-rw-r--r--Documentation/hwmon/xdpe152c4.rst118
15 files changed, 477 insertions, 12 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/adt7475.yaml b/Documentation/devicetree/bindings/hwmon/adt7475.yaml
index 7d9c083632b9..22beb37f1bf1 100644
--- a/Documentation/devicetree/bindings/hwmon/adt7475.yaml
+++ b/Documentation/devicetree/bindings/hwmon/adt7475.yaml
@@ -61,6 +61,26 @@ patternProperties:
$ref: /schemas/types.yaml#/definitions/uint32
enum: [0, 1]
+ "adi,pin(5|10)-function":
+ description: |
+ Configures the function for pin 5 on the adi,adt7473 and adi,adt7475. Or
+ pin 10 on the adi,adt7476 and adi,adt7490.
+ $ref: /schemas/types.yaml#/definitions/string
+ enum:
+ - pwm2
+ - smbalert#
+
+ "adi,pin(9|14)-function":
+ description: |
+ Configures the function for pin 9 on the adi,adt7473 and adi,adt7475. Or
+ pin 14 on the adi,adt7476 and adi,adt7490
+ $ref: /schemas/types.yaml#/definitions/string
+ enum:
+ - tach4
+ - therm#
+ - smbalert#
+ - gpio
+
required:
- compatible
- reg
@@ -79,6 +99,8 @@ examples:
adi,bypass-attenuator-in0 = <1>;
adi,bypass-attenuator-in1 = <0>;
adi,pwm-active-state = <1 0 1>;
+ adi,pin10-function = "smbalert#";
+ adi,pin14-function = "tach4";
};
};
diff --git a/Documentation/devicetree/bindings/hwmon/lm75.yaml b/Documentation/devicetree/bindings/hwmon/lm75.yaml
index 72980d083c21..8226e3b5d028 100644
--- a/Documentation/devicetree/bindings/hwmon/lm75.yaml
+++ b/Documentation/devicetree/bindings/hwmon/lm75.yaml
@@ -14,6 +14,7 @@ properties:
compatible:
enum:
- adi,adt75
+ - atmel,at30ts74
- dallas,ds1775
- dallas,ds75
- dallas,ds7505
diff --git a/Documentation/devicetree/bindings/hwmon/microchip,lan966x.yaml b/Documentation/devicetree/bindings/hwmon/microchip,lan966x.yaml
new file mode 100644
index 000000000000..390dd6755ff5
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/microchip,lan966x.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/microchip,lan966x.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip LAN966x Hardware Monitor
+
+maintainers:
+ - Michael Walle <michael@walle.cc>
+
+description: |
+ Microchip LAN966x temperature monitor and fan controller
+
+properties:
+ compatible:
+ enum:
+ - microchip,lan9668-hwmon
+
+ reg:
+ items:
+ - description: PVT registers
+ - description: FAN registers
+
+ reg-names:
+ items:
+ - const: pvt
+ - const: fan
+
+ clocks:
+ maxItems: 1
+
+ '#thermal-sensor-cells':
+ const: 0
+
+required:
+ - compatible
+ - reg
+ - reg-names
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ hwmon: hwmon@e2010180 {
+ compatible = "microchip,lan9668-hwmon";
+ reg = <0xe2010180 0xc>,
+ <0xe20042a8 0xc>;
+ reg-names = "pvt", "fan";
+ clocks = <&sys_clk>;
+ #thermal-sensor-cells = <0>;
+ };
diff --git a/Documentation/devicetree/bindings/hwmon/national,lm90.yaml b/Documentation/devicetree/bindings/hwmon/national,lm90.yaml
index 30db92977937..b04657849852 100644
--- a/Documentation/devicetree/bindings/hwmon/national,lm90.yaml
+++ b/Documentation/devicetree/bindings/hwmon/national,lm90.yaml
@@ -34,6 +34,7 @@ properties:
- nxp,sa56004
- onnn,nct1008
- ti,tmp451
+ - ti,tmp461
- winbond,w83l771
@@ -52,10 +53,29 @@ properties:
vcc-supply:
description: phandle to the regulator that provides the +VCC supply
+ ti,extended-range-enable:
+ description: Set to enable extended range temperature.
+ type: boolean
+
required:
- compatible
- reg
+allOf:
+ - if:
+ not:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - adi,adt7461
+ - adi,adt7461a
+ - ti,tmp451
+ - ti,tmp461
+ then:
+ properties:
+ ti,extended-range-enable: false
+
additionalProperties: false
examples:
diff --git a/Documentation/devicetree/bindings/hwmon/nuvoton,nct6775.yaml b/Documentation/devicetree/bindings/hwmon/nuvoton,nct6775.yaml
new file mode 100644
index 000000000000..358b262431fc
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/nuvoton,nct6775.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/hwmon/nuvoton,nct6775.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Nuvoton NCT6775 and compatible Super I/O chips
+
+maintainers:
+ - Zev Weiss <zev@bewilderbeest.net>
+
+properties:
+ compatible:
+ enum:
+ - nuvoton,nct6106
+ - nuvoton,nct6116
+ - nuvoton,nct6775
+ - nuvoton,nct6776
+ - nuvoton,nct6779
+ - nuvoton,nct6791
+ - nuvoton,nct6792
+ - nuvoton,nct6793
+ - nuvoton,nct6795
+ - nuvoton,nct6796
+ - nuvoton,nct6797
+ - nuvoton,nct6798
+
+ reg:
+ maxItems: 1
+
+ nuvoton,tsi-channel-mask:
+ description:
+ Bitmask indicating which TSI temperature sensor channels are
+ active. LSB is TSI0, bit 1 is TSI1, etc.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ maximum: 0xff
+ default: 0
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ superio@4d {
+ compatible = "nuvoton,nct6779";
+ reg = <0x4d>;
+ nuvoton,tsi-channel-mask = <0x03>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml b/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
new file mode 100644
index 000000000000..fe0ac08faa1a
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/ti,tmp401.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/ti,tmp401.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: TMP401, TPM411 and TMP43x temperature sensor
+
+maintainers:
+ - Guenter Roeck <linux@roeck-us.net>
+
+description: |
+ ±1°C Remote and Local temperature sensor
+
+ Datasheets:
+ https://www.ti.com/lit/ds/symlink/tmp401.pdf
+ https://www.ti.com/lit/ds/symlink/tmp411.pdf
+ https://www.ti.com/lit/ds/symlink/tmp431.pdf
+ https://www.ti.com/lit/ds/symlink/tmp435.pdf
+
+properties:
+ compatible:
+ enum:
+ - ti,tmp401
+ - ti,tmp411
+ - ti,tmp431
+ - ti,tmp432
+ - ti,tmp435
+
+ reg:
+ maxItems: 1
+
+ ti,extended-range-enable:
+ description:
+ When set, this sensor measures over extended temperature range.
+ type: boolean
+
+ ti,n-factor:
+ description:
+ value to be used for converting remote channel measurements to
+ temperature.
+ $ref: /schemas/types.yaml#/definitions/int32
+ items:
+ minimum: -128
+ maximum: 127
+
+ ti,beta-compensation:
+ description:
+ value to select beta correction range.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ minimum: 0
+ maximum: 15
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - ti,tmp401
+ then:
+ properties:
+ ti,n-factor: false
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - ti,tmp401
+ - ti,tmp411
+ then:
+ properties:
+ ti,beta-compensation: false
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@4c {
+ compatible = "ti,tmp401";
+ reg = <0x4c>;
+ };
+ };
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ sensor@4c {
+ compatible = "ti,tmp431";
+ reg = <0x4c>;
+ ti,extended-range-enable;
+ ti,n-factor = <0x3b>;
+ ti,beta-compensation = <0x7>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index 550a2e5c9e05..c11520347a9d 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -143,6 +143,10 @@ properties:
- infineon,xdpe12254
# Infineon Multi-phase Digital VR Controller xdpe12284
- infineon,xdpe12284
+ # Infineon Multi-phase Digital VR Controller xdpe15284
+ - infineon,xdpe15284
+ # Infineon Multi-phase Digital VR Controller xdpe152c4
+ - infineon,xdpe152c4
# Injoinic IP5108 2.0A Power Bank IC with I2C
- injoinic,ip5108
# Injoinic IP5109 2.1A Power Bank IC with I2C
diff --git a/Documentation/hwmon/aquacomputer_d5next.rst b/Documentation/hwmon/aquacomputer_d5next.rst
index 3373e27b707d..717e28226cde 100644
--- a/Documentation/hwmon/aquacomputer_d5next.rst
+++ b/Documentation/hwmon/aquacomputer_d5next.rst
@@ -6,7 +6,9 @@ Kernel driver aquacomputer-d5next
Supported devices:
* Aquacomputer D5 Next watercooling pump
+* Aquacomputer Farbwerk RGB controller
* Aquacomputer Farbwerk 360 RGB controller
+* Aquacomputer Octo fan controller
Author: Aleksa Savic
@@ -28,7 +30,10 @@ seems to require sending it a complete configuration. That includes addressable
RGB LEDs, for which there is no standard sysfs interface. Thus, that task is
better suited for userspace tools.
-The Farbwerk 360 exposes four temperature sensors. Depending on the device,
+The Octo exposes four temperature sensors and eight PWM controllable fans, along
+with their speed (in RPM), power, voltage and current.
+
+The Farbwerk and Farbwerk 360 expose four temperature sensors. Depending on the device,
not all sysfs and debugfs entries will be available.
Usage notes
diff --git a/Documentation/hwmon/asus_ec_sensors.rst b/Documentation/hwmon/asus_ec_sensors.rst
index e7e8f1640f45..78ca69eda877 100644
--- a/Documentation/hwmon/asus_ec_sensors.rst
+++ b/Documentation/hwmon/asus_ec_sensors.rst
@@ -4,17 +4,20 @@ Kernel driver asus_ec_sensors
=================================
Supported boards:
- * PRIME X570-PRO,
- * Pro WS X570-ACE,
- * ROG CROSSHAIR VIII DARK HERO,
+ * PRIME X470-PRO
+ * PRIME X570-PRO
+ * Pro WS X570-ACE
+ * ProArt X570-CREATOR WIFI
+ * ROG CROSSHAIR VIII DARK HERO
* ROG CROSSHAIR VIII HERO (WI-FI)
- * ROG CROSSHAIR VIII FORMULA,
- * ROG CROSSHAIR VIII HERO,
- * ROG CROSSHAIR VIII IMPACT,
- * ROG STRIX B550-E GAMING,
- * ROG STRIX B550-I GAMING,
- * ROG STRIX X570-E GAMING,
- * ROG STRIX X570-F GAMING,
+ * ROG CROSSHAIR VIII FORMULA
+ * ROG CROSSHAIR VIII HERO
+ * ROG CROSSHAIR VIII IMPACT
+ * ROG STRIX B550-E GAMING
+ * ROG STRIX B550-I GAMING
+ * ROG STRIX X570-E GAMING
+ * ROG STRIX X570-E GAMING WIFI II
+ * ROG STRIX X570-F GAMING
* ROG STRIX X570-I GAMING
Authors:
@@ -52,3 +55,5 @@ Module Parameters
the path is mostly identical for them). If ASUS changes this path
in a future BIOS update, this parameter can be used to override
the stored in the driver value until it gets updated.
+ A special string ":GLOBAL_LOCK" can be passed to use the ACPI
+ global lock instead of a dedicated mutex.
diff --git a/Documentation/hwmon/dell-smm-hwmon.rst b/Documentation/hwmon/dell-smm-hwmon.rst
index d3323a96665d..e5d85e40972c 100644
--- a/Documentation/hwmon/dell-smm-hwmon.rst
+++ b/Documentation/hwmon/dell-smm-hwmon.rst
@@ -86,6 +86,13 @@ probe the BIOS on your machine and discover the appropriate codes.
Again, when you find new codes, we'd be happy to have your patches!
+``thermal`` interface
+---------------------------
+
+The driver also exports the fans as thermal cooling devices with
+``type`` set to ``dell-smm-fan[1-3]``. This allows for easy fan control
+using one of the thermal governors.
+
Module parameters
-----------------
@@ -324,6 +331,8 @@ Reading of fan types causes erratic fan behaviour. Studio XPS 8000
Inspiron 580
+ Inspiron 3505
+
Fan-related SMM calls take too long (about 500ms). Inspiron 7720
Vostro 3360
diff --git a/Documentation/hwmon/hwmon-kernel-api.rst b/Documentation/hwmon/hwmon-kernel-api.rst
index c41eb6108103..f3276b3a381a 100644
--- a/Documentation/hwmon/hwmon-kernel-api.rst
+++ b/Documentation/hwmon/hwmon-kernel-api.rst
@@ -50,6 +50,10 @@ register/unregister functions::
void devm_hwmon_device_unregister(struct device *dev);
+ char *hwmon_sanitize_name(const char *name);
+
+ char *devm_hwmon_sanitize_name(struct device *dev, const char *name);
+
hwmon_device_register_with_groups registers a hardware monitoring device.
The first parameter of this function is a pointer to the parent device.
The name parameter is a pointer to the hwmon device name. The registration
@@ -72,7 +76,7 @@ hwmon_device_register_with_info is the most comprehensive and preferred means
to register a hardware monitoring device. It creates the standard sysfs
attributes in the hardware monitoring core, letting the driver focus on reading
from and writing to the chip instead of having to bother with sysfs attributes.
-The parent device parameter cannot be NULL with non-NULL chip info. Its
+The parent device parameter as well as the chip parameter must not be NULL. Its
parameters are described in more detail below.
devm_hwmon_device_register_with_info is similar to
@@ -95,6 +99,18 @@ All supported hwmon device registration functions only accept valid device
names. Device names including invalid characters (whitespace, '*', or '-')
will be rejected. The 'name' parameter is mandatory.
+If the driver doesn't use a static device name (for example it uses
+dev_name()), and therefore cannot make sure the name only contains valid
+characters, hwmon_sanitize_name can be used. This convenience function
+will duplicate the string and replace any invalid characters with an
+underscore. It will allocate memory for the new string and it is the
+responsibility of the caller to release the memory when the device is
+removed.
+
+devm_hwmon_sanitize_name is the resource managed version of
+hwmon_sanitize_name; the memory will be freed automatically on device
+removal.
+
Using devm_hwmon_device_register_with_info()
--------------------------------------------
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index 863b76289159..a72c16872ec2 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -90,6 +90,7 @@ Hardware Monitoring Kernel Drivers
jc42
k10temp
k8temp
+ lan966x
lineage-pem
lm25066
lm63
@@ -223,6 +224,7 @@ Hardware Monitoring Kernel Drivers
wm8350
xgene-hwmon
xdpe12284
+ xdpe152c4
zl6100
.. only:: subproject and html
diff --git a/Documentation/hwmon/lan966x.rst b/Documentation/hwmon/lan966x.rst
new file mode 100644
index 000000000000..1d1724afa5d2
--- /dev/null
+++ b/Documentation/hwmon/lan966x.rst
@@ -0,0 +1,40 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver lan966x-hwmon
+===========================
+
+Supported chips:
+
+ * Microchip LAN9668 (sensor in SoC)
+
+ Prefix: 'lan9668-hwmon'
+
+ Datasheet: https://microchip-ung.github.io/lan9668_reginfo
+
+Authors:
+
+ Michael Walle <michael@walle.cc>
+
+Description
+-----------
+
+This driver implements support for the Microchip LAN9668 on-chip
+temperature sensor as well as its fan controller. It provides one
+temperature sensor and one fan controller. The temperature range
+of the sensor is specified from -40 to +125 degrees Celsius and
+its accuracy is +/- 5 degrees Celsius. The fan controller has a
+tacho input and a PWM output with a customizable PWM output
+frequency ranging from ~20Hz to ~650kHz.
+
+No alarms are supported by the SoC.
+
+The driver exports temperature values, fan tacho input and PWM
+settings via the following sysfs files:
+
+**temp1_input**
+
+**fan1_input**
+
+**pwm1**
+
+**pwm1_freq**
diff --git a/Documentation/hwmon/max16601.rst b/Documentation/hwmon/max16601.rst
index 92c0a7d7808c..6a4eef8efbaf 100644
--- a/Documentation/hwmon/max16601.rst
+++ b/Documentation/hwmon/max16601.rst
@@ -21,6 +21,14 @@ Supported chips:
Datasheet: Not published
+ * Maxim MAX16602
+
+ Prefix: 'max16602'
+
+ Addresses scanned: -
+
+ Datasheet: https://datasheets.maximintegrated.com/en/ds/MAX16602.pdf
+
Author: Guenter Roeck <linux@roeck-us.net>
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**