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authorLinus Torvalds <torvalds@linux-foundation.org>2023-11-01 06:44:17 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-11-01 06:44:17 +0300
commitf9a7eda4d73d44dc1d17d05cdc9aeb9fc5660740 (patch)
treebd6ea1fd74130f51372706a87fcf61dabba5b3df /Documentation
parent34aac0a33de21ec6e03b689342c0933a4989fbc2 (diff)
parent0f564130e5c76f1e5cf0008924f6a6cd138929d9 (diff)
downloadlinux-f9a7eda4d73d44dc1d17d05cdc9aeb9fc5660740.tar.xz
Merge tag 'hwmon-for-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon updates from Guenter Roeck: "New drivers: - Driver for LTC2991 - Driver for POWER-Z Added chip / system support to existing drivers: - The ina238 driver now also supports INA237 - The asus-ec-sensors driver now supports ROG Crosshair X670E Gene - The aquacomputer_d5next now supports Aquacomputer High Flow USB and MPS Flow - The pmbus/mpq7932 driver now also supports MPQ2286 - The nct6683 now also supports ASRock X670E Taichi Various other minor improvements and fixes: - One patch series to call out is the conversion of hwmon platform drivers to use the platform remove callback returning void" * tag 'hwmon-for-v6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging: (69 commits) hwmon: (aquacomputer_d5next) Check if temp sensors of legacy devices are connected hwmon: (aquacomputer_d5next) Add support for Aquacomputer High Flow USB and MPS Flow dt-bindings: hwmon: npcm: Add npcm845 compatible string hwmon: Add driver for ltc2991 dt-bindings: hwmon: ltc2991: add bindings hwmon: (pmbus/max31785) Add delay between bus accesses hwmon: (ina238) add ina237 support dt-bindings: hwmon: ti,ina2xx: add ti,ina237 hwmon: (asus-ec-sensors) add ROG Crosshair X670E Gene. hwmon: (max31827) handle vref regulator hwmon: (ina3221) Add support for channel summation disable dt-bindings: hwmon: ina3221: Add ti,summation-disable dt-bindings: hwmon: ina3221: Convert to json-schema hwmon: (pmbus/mpq7932) Add a support for mpq2286 Power Management IC hwmon: (pmbus/core) Add helper macro to define single pmbus regulator regulator: dt-bindings: Add mps,mpq2286 power-management IC hwmon: (pmbus/mpq7932) Get page count based on chip info dt-bindings: hwmon: Add possible new properties to max31827 bindings hwmon: (max31827) Modify conversion wait time hwmon: (max31827) Make code cleaner ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml128
-rw-r--r--Documentation/devicetree/bindings/hwmon/adi,max31827.yaml66
-rw-r--r--Documentation/devicetree/bindings/hwmon/ina3221.txt54
-rw-r--r--Documentation/devicetree/bindings/hwmon/npcm750-pwm-fan.txt6
-rw-r--r--Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38640.yaml49
-rw-r--r--Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml1
-rw-r--r--Documentation/devicetree/bindings/hwmon/ti,ina3221.yaml121
-rw-r--r--Documentation/devicetree/bindings/regulator/mps,mpq2286.yaml59
-rw-r--r--Documentation/devicetree/bindings/trivial-devices.yaml2
-rw-r--r--Documentation/hwmon/adt7475.rst3
-rw-r--r--Documentation/hwmon/aquacomputer_d5next.rst7
-rw-r--r--Documentation/hwmon/asus_ec_sensors.rst1
-rw-r--r--Documentation/hwmon/index.rst2
-rw-r--r--Documentation/hwmon/ltc2991.rst43
-rw-r--r--Documentation/hwmon/max31827.rst4
-rw-r--r--Documentation/hwmon/nct6683.rst1
-rw-r--r--Documentation/hwmon/powerz.rst30
-rw-r--r--Documentation/hwmon/sch5627.rst10
18 files changed, 527 insertions, 60 deletions
diff --git a/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml b/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml
new file mode 100644
index 000000000000..011e5b65c79c
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/adi,ltc2991.yaml
@@ -0,0 +1,128 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/hwmon/adi,ltc2991.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices LTC2991 Octal I2C Voltage, Current and Temperature Monitor
+
+maintainers:
+ - Antoniu Miclaus <antoniu.miclaus@analog.com>
+
+description: |
+ The LTC2991 is used to monitor system temperatures, voltages and currents.
+ Through the I2C serial interface, the eight monitors can individually measure
+ supply voltages and can be paired for differential measurements of current
+ sense resistors or temperature sensing transistors.
+
+ Datasheet:
+ https://www.analog.com/en/products/ltc2991.html
+
+properties:
+ compatible:
+ const: adi,ltc2991
+
+ reg:
+ maxItems: 1
+
+ '#address-cells':
+ const: 1
+
+ '#size-cells':
+ const: 0
+
+ vcc-supply: true
+
+patternProperties:
+ "^channel@[0-3]$":
+ type: object
+ description:
+ Represents the differential/temperature channels.
+
+ properties:
+ reg:
+ description:
+ The channel number. LTC2991 can monitor 4 currents/temperatures.
+ items:
+ minimum: 0
+ maximum: 3
+
+ shunt-resistor-micro-ohms:
+ description:
+ The value of curent sense resistor in micro ohms. Pin configuration is
+ set for differential input pair.
+
+ adi,temperature-enable:
+ description:
+ Enables temperature readings. Pin configuration is set for remote
+ diode temperature measurement.
+ type: boolean
+
+ required:
+ - reg
+
+ allOf:
+ - if:
+ required:
+ - shunt-resistor-micro-ohms
+ then:
+ properties:
+ adi,temperature-enable: false
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - vcc-supply
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hwmon@48 {
+ compatible = "adi,ltc2991";
+ reg = <0x48>;
+ vcc-supply = <&vcc>;
+ };
+ };
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ hwmon@48 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ compatible = "adi,ltc2991";
+ reg = <0x48>;
+ vcc-supply = <&vcc>;
+
+ channel@0 {
+ reg = <0x0>;
+ shunt-resistor-micro-ohms = <100000>;
+ };
+
+ channel@1 {
+ reg = <0x1>;
+ shunt-resistor-micro-ohms = <100000>;
+ };
+
+ channel@2 {
+ reg = <0x2>;
+ adi,temperature-enable;
+ };
+
+ channel@3 {
+ reg = <0x3>;
+ adi,temperature-enable;
+ };
+ };
+ };
+...
diff --git a/Documentation/devicetree/bindings/hwmon/adi,max31827.yaml b/Documentation/devicetree/bindings/hwmon/adi,max31827.yaml
index 2dc8b07b4d3b..f60e06ab7d0a 100644
--- a/Documentation/devicetree/bindings/hwmon/adi,max31827.yaml
+++ b/Documentation/devicetree/bindings/hwmon/adi,max31827.yaml
@@ -32,6 +32,68 @@ properties:
Must have values in the interval (1.6V; 3.6V) in order for the device to
function correctly.
+ adi,comp-int:
+ description:
+ If present interrupt mode is used. If not present comparator mode is used
+ (default).
+ type: boolean
+
+ adi,alarm-pol:
+ description:
+ Sets the alarms active state.
+ - 0 = active low
+ - 1 = active high
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [0, 1]
+
+ adi,fault-q:
+ description:
+ Select how many consecutive temperature faults must occur before
+ overtemperature or undertemperature faults are indicated in the
+ corresponding status bits.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ enum: [1, 2, 4, 8]
+
+ adi,timeout-enable:
+ description:
+ Enables timeout. Bus timeout resets the I2C-compatible interface when SCL
+ is low for more than 30ms (nominal).
+ type: boolean
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: adi,max31829
+
+ then:
+ properties:
+ adi,alarm-pol:
+ default: 1
+
+ else:
+ properties:
+ adi,alarm-pol:
+ default: 0
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: adi,max31827
+
+ then:
+ properties:
+ adi,fault-q:
+ default: 1
+
+ else:
+ properties:
+ adi,fault-q:
+ default: 4
+
+
required:
- compatible
- reg
@@ -49,6 +111,10 @@ examples:
compatible = "adi,max31827";
reg = <0x42>;
vref-supply = <&reg_vdd>;
+ adi,comp-int;
+ adi,alarm-pol = <0>;
+ adi,fault-q = <1>;
+ adi,timeout-enable;
};
};
...
diff --git a/Documentation/devicetree/bindings/hwmon/ina3221.txt b/Documentation/devicetree/bindings/hwmon/ina3221.txt
deleted file mode 100644
index fa63b6171407..000000000000
--- a/Documentation/devicetree/bindings/hwmon/ina3221.txt
+++ /dev/null
@@ -1,54 +0,0 @@
-Texas Instruments INA3221 Device Tree Bindings
-
-1) ina3221 node
- Required properties:
- - compatible: Must be "ti,ina3221"
- - reg: I2C address
-
- Optional properties:
- - ti,single-shot: This chip has two power modes: single-shot (chip takes one
- measurement and then shuts itself down) and continuous (
- chip takes continuous measurements). The continuous mode is
- more reliable and suitable for hardware monitor type device,
- but the single-shot mode is more power-friendly and useful
- for battery-powered device which cares power consumptions
- while still needs some measurements occasionally.
- If this property is present, the single-shot mode will be
- used, instead of the default continuous one for monitoring.
-
- = The node contains optional child nodes for three channels =
- = Each child node describes the information of input source =
-
- - #address-cells: Required only if a child node is present. Must be 1.
- - #size-cells: Required only if a child node is present. Must be 0.
-
-2) child nodes
- Required properties:
- - reg: Must be 0, 1 or 2, corresponding to IN1, IN2 or IN3 port of INA3221
-
- Optional properties:
- - label: Name of the input source
- - shunt-resistor-micro-ohms: Shunt resistor value in micro-Ohm
-
-Example:
-
-ina3221@40 {
- compatible = "ti,ina3221";
- reg = <0x40>;
- #address-cells = <1>;
- #size-cells = <0>;
-
- input@0 {
- reg = <0x0>;
- status = "disabled";
- };
- input@1 {
- reg = <0x1>;
- shunt-resistor-micro-ohms = <5000>;
- };
- input@2 {
- reg = <0x2>;
- label = "VDD_5V";
- shunt-resistor-micro-ohms = <5000>;
- };
-};
diff --git a/Documentation/devicetree/bindings/hwmon/npcm750-pwm-fan.txt b/Documentation/devicetree/bindings/hwmon/npcm750-pwm-fan.txt
index 8523777f560c..18095ba87a5a 100644
--- a/Documentation/devicetree/bindings/hwmon/npcm750-pwm-fan.txt
+++ b/Documentation/devicetree/bindings/hwmon/npcm750-pwm-fan.txt
@@ -1,12 +1,16 @@
-Nuvoton NPCM7xx PWM and Fan Tacho controller device
+Nuvoton NPCM PWM and Fan Tacho controller device
The Nuvoton BMC NPCM7XX supports 8 Pulse-width modulation (PWM)
controller outputs and 16 Fan tachometer controller inputs.
+The Nuvoton BMC NPCM8XX supports 12 Pulse-width modulation (PWM)
+controller outputs and 16 Fan tachometer controller inputs.
+
Required properties for pwm-fan node
- #address-cells : should be 1.
- #size-cells : should be 0.
- compatible : "nuvoton,npcm750-pwm-fan" for Poleg NPCM7XX.
+ : "nuvoton,npcm845-pwm-fan" for Arbel NPCM8XX.
- reg : specifies physical base address and size of the registers.
- reg-names : must contain:
* "pwm" for the PWM registers.
diff --git a/Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38640.yaml b/Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38640.yaml
new file mode 100644
index 000000000000..ded1c115764b
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/pmbus/infineon,tda38640.yaml
@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/hwmon/pmbus/infineon,tda38640.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Infineon TDA38640 Synchronous Buck Regulator with SVID and I2C
+
+maintainers:
+ - Naresh Solanki <naresh.solanki@9elements.com>
+
+description: |
+ The Infineon TDA38640 is a 40A Single-voltage Synchronous Buck
+ Regulator with SVID and I2C designed for Industrial use.
+
+ Datasheet: https://www.infineon.com/dgdl/Infineon-TDA38640-0000-DataSheet-v02_04-EN.pdf?fileId=8ac78c8c80027ecd018042f2337f00c9
+
+properties:
+ compatible:
+ enum:
+ - infineon,tda38640
+
+ reg:
+ maxItems: 1
+
+ infineon,en-pin-fixed-level:
+ description:
+ Indicates that the chip EN pin is at fixed level or left
+ unconnected(has internal pull-down).
+ type: boolean
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ tda38640@40 {
+ compatible = "infineon,tda38640";
+ reg = <0x40>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml b/Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml
index 8648877d2d01..378d1f6aeeb3 100644
--- a/Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml
+++ b/Documentation/devicetree/bindings/hwmon/ti,ina2xx.yaml
@@ -26,6 +26,7 @@ properties:
- ti,ina226
- ti,ina230
- ti,ina231
+ - ti,ina237
- ti,ina238
reg:
diff --git a/Documentation/devicetree/bindings/hwmon/ti,ina3221.yaml b/Documentation/devicetree/bindings/hwmon/ti,ina3221.yaml
new file mode 100644
index 000000000000..5f10f1207d69
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/ti,ina3221.yaml
@@ -0,0 +1,121 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/ti,ina3221.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments INA3221 Current and Voltage Monitor
+
+maintainers:
+ - Jean Delvare <jdelvare@suse.com>
+ - Guenter Roeck <linux@roeck-us.net>
+
+properties:
+ compatible:
+ const: ti,ina3221
+
+ reg:
+ maxItems: 1
+
+ ti,single-shot:
+ description: |
+ This chip has two power modes: single-shot (chip takes one measurement
+ and then shuts itself down) and continuous (chip takes continuous
+ measurements). The continuous mode is more reliable and suitable for
+ hardware monitor type device, but the single-shot mode is more power-
+ friendly and useful for battery-powered device which cares power
+ consumptions while still needs some measurements occasionally.
+
+ If this property is present, the single-shot mode will be used, instead
+ of the default continuous one for monitoring.
+ $ref: /schemas/types.yaml#/definitions/flag
+
+ "#address-cells":
+ description: Required only if a child node is present.
+ const: 1
+
+ "#size-cells":
+ description: Required only if a child node is present.
+ const: 0
+
+patternProperties:
+ "^input@[0-2]$":
+ description: The node contains optional child nodes for three channels.
+ Each child node describes the information of input source. Input channels
+ default to enabled in the chip. Unless channels are explicitly disabled
+ in device-tree, input channels will be enabled.
+ type: object
+ additionalProperties: false
+ properties:
+ reg:
+ description: Must be 0, 1 and 2, corresponding to the IN1, IN2 or IN3
+ ports of the INA3221, respectively.
+ enum: [ 0, 1, 2 ]
+
+ label:
+ description: name of the input source
+
+ shunt-resistor-micro-ohms:
+ description: shunt resistor value in micro-Ohm
+
+ ti,summation-disable:
+ description: |
+ The INA3221 has a critical alert pin that can be controlled by the
+ summation control function. This function adds the single
+ shunt-voltage conversions for the desired channels in order to
+ compare the combined sum to the programmed limit. The Shunt-Voltage
+ Sum Limit register contains the programmed value that is compared
+ to the value in the Shunt-Voltage Sum register in order to
+ determine if the total summed limit is exceeded. If the
+ shunt-voltage sum limit value is exceeded, the critical alert pin
+ is asserted.
+
+ For the summation limit to have a meaningful value, it is necessary
+ to use the same shunt-resistor value on all enabled channels. If
+ this is not the case or if a channel should not be used for
+ triggering the critical alert pin, then this property can be used
+ exclude specific channels from the summation control function.
+ type: boolean
+
+ required:
+ - reg
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ power-sensor@40 {
+ compatible = "ti,ina3221";
+ reg = <0x40>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ input@0 {
+ reg = <0x0>;
+ /*
+ * Input channels are enabled by default in the device and so
+ * to disable, must be explicitly disabled in device-tree.
+ */
+ status = "disabled";
+ };
+
+ input@1 {
+ reg = <0x1>;
+ shunt-resistor-micro-ohms = <5000>;
+ };
+
+ input@2 {
+ reg = <0x2>;
+ label = "VDD_5V";
+ shunt-resistor-micro-ohms = <5000>;
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/regulator/mps,mpq2286.yaml b/Documentation/devicetree/bindings/regulator/mps,mpq2286.yaml
new file mode 100644
index 000000000000..1296f9b30862
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/mps,mpq2286.yaml
@@ -0,0 +1,59 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/mps,mpq2286.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Monolithic Power System MPQ2286 PMIC
+
+maintainers:
+ - Saravanan Sekar <saravanan@linumiz.com>
+
+properties:
+ compatible:
+ enum:
+ - mps,mpq2286
+
+ reg:
+ maxItems: 1
+
+ regulators:
+ type: object
+
+ properties:
+ buck:
+ type: object
+ $ref: regulator.yaml#
+
+ unevaluatedProperties: false
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - regulators
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ pmic@3 {
+ compatible = "mps,mpq2286";
+ reg = <0x3>;
+
+ regulators {
+ buck {
+ regulator-name = "buck";
+ regulator-min-microvolt = <1600000>;
+ regulator-max-microvolt = <1800000>;
+ regulator-boot-on;
+ };
+ };
+ };
+ };
+...
diff --git a/Documentation/devicetree/bindings/trivial-devices.yaml b/Documentation/devicetree/bindings/trivial-devices.yaml
index 430a814f64a5..9a1443ec3aaa 100644
--- a/Documentation/devicetree/bindings/trivial-devices.yaml
+++ b/Documentation/devicetree/bindings/trivial-devices.yaml
@@ -151,8 +151,6 @@ properties:
- infineon,slb9645tt
# Infineon SLB9673 I2C TPM 2.0
- infineon,slb9673
- # Infineon TDA38640 Voltage Regulator
- - infineon,tda38640
# Infineon TLV493D-A1B6 I2C 3D Magnetic Sensor
- infineon,tlv493d-a1b6
# Infineon Multi-phase Digital VR Controller xdpe11280
diff --git a/Documentation/hwmon/adt7475.rst b/Documentation/hwmon/adt7475.rst
index ef3ea1ea9bc1..f90f769d82d6 100644
--- a/Documentation/hwmon/adt7475.rst
+++ b/Documentation/hwmon/adt7475.rst
@@ -90,7 +90,7 @@ ADT7476:
ADT7490:
* 6 voltage inputs
- * 1 Imon input (not implemented)
+ * 1 Imon input
* PECI support (not implemented)
* 2 GPIO pins (not implemented)
* system acoustics optimizations (not implemented)
@@ -107,6 +107,7 @@ in2 VCC (4) VCC (4) VCC (4) VCC (3)
in3 5VIN (20) 5VIN (20)
in4 12VIN (21) 12VIN (21)
in5 VTT (8)
+in6 Imon (19)
==== =========== =========== ========= ==========
Special Features
diff --git a/Documentation/hwmon/aquacomputer_d5next.rst b/Documentation/hwmon/aquacomputer_d5next.rst
index 94dc2d93d180..cb073c79479c 100644
--- a/Documentation/hwmon/aquacomputer_d5next.rst
+++ b/Documentation/hwmon/aquacomputer_d5next.rst
@@ -16,6 +16,8 @@ Supported devices:
* Aquacomputer Aquastream XT watercooling pump
* Aquacomputer Aquastream Ultimate watercooling pump
* Aquacomputer Poweradjust 3 fan controller
+* Aquacomputer High Flow USB flow meter
+* Aquacomputer MPS Flow devices
Author: Aleksa Savic
@@ -73,6 +75,11 @@ It also exposes pressure and flow speed readings.
The Poweradjust 3 controller exposes a single external temperature sensor.
+The High Flow USB exposes an internal and external temperature sensor, and a flow meter.
+
+The MPS Flow devices expose the same entries as the High Flow USB because they have
+the same USB product ID and report sensors equivalently.
+
Depending on the device, not all sysfs and debugfs entries will be available.
Writing to virtual temperature sensors is not currently supported.
diff --git a/Documentation/hwmon/asus_ec_sensors.rst b/Documentation/hwmon/asus_ec_sensors.rst
index 7e3cd5b6686f..0bf99ba406dd 100644
--- a/Documentation/hwmon/asus_ec_sensors.rst
+++ b/Documentation/hwmon/asus_ec_sensors.rst
@@ -15,6 +15,7 @@ Supported boards:
* ROG CROSSHAIR VIII HERO
* ROG CROSSHAIR VIII IMPACT
* ROG CROSSHAIR X670E HERO
+ * ROG CROSSHAIR X670E GENE
* ROG MAXIMUS XI HERO
* ROG MAXIMUS XI HERO (WI-FI)
* ROG STRIX B550-E GAMING
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index 88dadea85cfc..72f4e6065bae 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -121,6 +121,7 @@ Hardware Monitoring Kernel Drivers
ltc2947
ltc2978
ltc2990
+ ltc2991
ltc3815
ltc4151
ltc4215
@@ -178,6 +179,7 @@ Hardware Monitoring Kernel Drivers
peci-cputemp
peci-dimmtemp
pmbus
+ powerz
powr1220
pxe1610
pwm-fan
diff --git a/Documentation/hwmon/ltc2991.rst b/Documentation/hwmon/ltc2991.rst
new file mode 100644
index 000000000000..15d8b4d7e471
--- /dev/null
+++ b/Documentation/hwmon/ltc2991.rst
@@ -0,0 +1,43 @@
+.. SPDX-License-Identifier: GPL-2.0
+
+Kernel driver ltc2991
+=====================
+
+Supported chips:
+
+ * Analog Devices LTC2991
+
+ Prefix: 'ltc2991'
+
+ Addresses scanned: I2C 0x48 - 0x4f
+
+ Datasheet: https://www.analog.com/media/en/technical-documentation/data-sheets/2991ff.pdf
+
+Authors:
+
+ - Antoniu Miclaus <antoniu.miclaus@analog.com>
+
+
+Description
+-----------
+
+This driver supports hardware monitoring for Analog Devices LTC2991 Octal I2C
+Voltage, Current and Temperature Monitor.
+
+The LTC2991 is used to monitor system temperatures, voltages and currents.
+Through the I2C serial interface, the eight monitors can individually measure
+supply voltages and can be paired for differential measurements of current sense
+resistors or temperature sensing transistors. Additional measurements include
+internal temperatureand internal VCC.
+
+
+sysfs-Interface
+---------------
+
+The following attributes are supported. Limits are read-only.
+
+=============== =================
+inX_input: voltage input
+currX_input: current input
+tempX_input: temperature input
+=============== =================
diff --git a/Documentation/hwmon/max31827.rst b/Documentation/hwmon/max31827.rst
index b0971d05b8a4..9a1055a007cf 100644
--- a/Documentation/hwmon/max31827.rst
+++ b/Documentation/hwmon/max31827.rst
@@ -73,8 +73,8 @@ the conversion frequency to 1 conv/s. The conversion time varies depending on
the resolution. The conversion time doubles with every bit of increased
resolution. For 10 bit resolution 35ms are needed, while for 12 bit resolution
(default) 140ms. When chip is in shutdown mode and a read operation is
-requested, one-shot is triggered, the device waits for 140 (conversion time) + 1
-(error) ms, and only after that is the temperature value register read.
+requested, one-shot is triggered, the device waits for 140 (conversion time) ms,
+and only after that is the temperature value register read.
The LSB of the temperature values is 0.0625 degrees Celsius, but the values of
the temperatures are displayed in milli-degrees. This means, that some data is
diff --git a/Documentation/hwmon/nct6683.rst b/Documentation/hwmon/nct6683.rst
index 2e1408d174bd..3e7f6ee779c2 100644
--- a/Documentation/hwmon/nct6683.rst
+++ b/Documentation/hwmon/nct6683.rst
@@ -62,5 +62,6 @@ Intel DH87RL NCT6683D EC firmware version 1.0 build 04/03/13
Intel DH87MC NCT6683D EC firmware version 1.0 build 04/03/13
Intel DB85FL NCT6683D EC firmware version 1.0 build 04/03/13
ASRock X570 NCT6683D EC firmware version 1.0 build 06/28/19
+ASRock X670E NCT6686D EC firmware version 1.0 build 05/19/22
MSI B550 NCT6687D EC firmware version 1.0 build 05/07/20
=============== ===============================================
diff --git a/Documentation/hwmon/powerz.rst b/Documentation/hwmon/powerz.rst
new file mode 100644
index 000000000000..317084e0b76b
--- /dev/null
+++ b/Documentation/hwmon/powerz.rst
@@ -0,0 +1,30 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver POWERZ
+====================
+
+Supported chips:
+
+ * ChargerLAB POWER-Z KM003C
+
+ Prefix: 'powerz'
+
+ Addresses scanned: -
+
+Author:
+
+ - Thomas Weißschuh <linux@weissschuh.net>
+
+Description
+-----------
+
+This driver implements support for the ChargerLAB POWER-Z USB-C power testing
+family.
+
+The device communicates with the custom protocol over USB.
+
+The channel labels exposed via hwmon match the labels used by the on-device
+display and the official POWER-Z PC software.
+
+As current can flow in both directions through the tester the sign of the
+channel "curr1_input" (label "IBUS") indicates the direction.
diff --git a/Documentation/hwmon/sch5627.rst b/Documentation/hwmon/sch5627.rst
index ecb4fc84d045..8639dff234fc 100644
--- a/Documentation/hwmon/sch5627.rst
+++ b/Documentation/hwmon/sch5627.rst
@@ -33,3 +33,13 @@ The hardware monitoring part of the SMSC SCH5627 is accessed by talking
through an embedded microcontroller. An application note describing the
protocol for communicating with the microcontroller is available upon
request. Please mail me if you want a copy.
+
+
+Controlling fan speed
+---------------------
+
+The SCH5627 allows for partially controlling the fan speed. If a temperature
+channel excedes tempX_max, all fans are forced to maximum speed. The same is not
+true for tempX_crit, presumably some other measures to cool down the system are
+take in this case.
+In which way the value of fanX_min affects the fan speed is currently unknown.