7 files changed, 73 insertions, 14 deletions
diff --git a/Documentation/hwmon/dell-smm-hwmon.rst b/Documentation/hwmon/dell-smm-hwmon.rst
index 3bf77a5df995..beec88491171 100644
--- a/Documentation/hwmon/dell-smm-hwmon.rst
+++ b/Documentation/hwmon/dell-smm-hwmon.rst
@@ -34,6 +34,9 @@ Name				Perm	Description
 =============================== ======= =======================================
 fan[1-3]_input                  RO      Fan speed in RPM.
 fan[1-3]_label                  RO      Fan label.
+fan[1-3]_min                    RO      Minimal Fan speed in RPM
+fan[1-3]_max                    RO      Maximal Fan speed in RPM
+fan[1-3]_target                 RO      Expected Fan speed in RPM
 pwm[1-3]                        RW      Control the fan PWM duty-cycle.
 pwm1_enable                     WO      Enable or disable automatic BIOS fan
                                         control (not supported on all laptops,
diff --git a/Documentation/hwmon/index.rst b/Documentation/hwmon/index.rst
index f790f1260c33..7046bf1870d9 100644
--- a/Documentation/hwmon/index.rst
+++ b/Documentation/hwmon/index.rst
@@ -130,6 +130,7 @@ Hardware Monitoring Kernel Drivers
    max31785
    max31790
    max34440
+   max6620
    max6639
    max6642
    max6650
diff --git a/Documentation/hwmon/lm25066.rst b/Documentation/hwmon/lm25066.rst
index 9f1d7e4d3ca1..a2098eb24090 100644
--- a/Documentation/hwmon/lm25066.rst
+++ b/Documentation/hwmon/lm25066.rst
@@ -79,6 +79,8 @@ This driver does not auto-detect devices. You will have to instantiate the
 devices explicitly. Please see Documentation/i2c/instantiating-devices.rst for
 details.
 
+The shunt (sense) resistor value can be configured by a device tree property;
+see Documentation/devicetree/bindings/hwmon/pmbus/ti,lm25066.yaml for details.
 
 Platform data support
 ---------------------
diff --git a/Documentation/hwmon/lm90.rst b/Documentation/hwmon/lm90.rst
index 3da8c6e06a36..05391fb4042d 100644
--- a/Documentation/hwmon/lm90.rst
+++ b/Documentation/hwmon/lm90.rst
@@ -265,6 +265,16 @@ Supported chips:
 
 	       https://www.ti.com/litv/pdf/sbos686
 
+  * Texas Instruments TMP461
+
+    Prefix: 'tmp461'
+
+    Addresses scanned: I2C 0x48 through 0x4F
+
+    Datasheet: Publicly available at TI website
+
+	       https://www.ti.com/lit/gpn/tmp461
+
 Author: Jean Delvare <jdelvare@suse.de>
 
 
diff --git a/Documentation/hwmon/max6620.rst b/Documentation/hwmon/max6620.rst
new file mode 100644
index 000000000000..84c1c44d3de4
--- /dev/null
+++ b/Documentation/hwmon/max6620.rst
@@ -0,0 +1,46 @@
+.. SPDX-License-Identifier: GPL-2.0-or-later
+
+Kernel driver max6620
+=====================
+
+Supported chips:
+
+    Maxim MAX6620
+
+    Prefix: 'max6620'
+
+    Addresses scanned: none
+
+    Datasheet: http://pdfserv.maxim-ic.com/en/ds/MAX6620.pdf
+
+Authors:
+    - L\. Grunenberg <contact@lgrunenberg.de>
+    - Cumulus Networks <support@cumulusnetworks.com>
+    - Shuotian Cheng <shuche@microsoft.com>
+    - Arun Saravanan Balachandran <Arun_Saravanan_Balac@dell.com>
+
+Description
+-----------
+
+This driver implements support for Maxim MAX6620 fan controller.
+
+The driver configures the fan controller in RPM mode. To give the readings more
+range or accuracy, the desired value can be set by a programmable register
+(1, 2, 4, 8, 16 or 32). Set higher values for larger speeds.
+
+The driver provides the following sensor access in sysfs:
+
+================ ======= =====================================================
+fan[1-4]_alarm   ro      Fan alarm.
+fan[1-4]_div     rw      Sets the nominal RPM range of the fan. Valid values
+                         are 1, 2, 4, 8, 16 and 32.
+fan[1-4]_input   ro      Fan speed in RPM.
+fan[1-4]_target  rw      Desired fan speed in RPM.
+================ ======= =====================================================
+
+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.
diff --git a/Documentation/hwmon/tmp401.rst b/Documentation/hwmon/tmp401.rst
index 14bf1fbf4493..3aacf3d3bdf3 100644
--- a/Documentation/hwmon/tmp401.rst
+++ b/Documentation/hwmon/tmp401.rst
@@ -43,12 +43,6 @@ Supported chips:
 
     Datasheet: http://focus.ti.com/docs/prod/folders/print/tmp435.html
 
-  * Texas Instruments TMP461
-
-    Prefix: 'tmp461'
-
-    Datasheet: https://www.ti.com/product/tmp461
-
 
 
 Authors:
@@ -60,7 +54,7 @@ Description
 -----------
 
 This driver implements support for Texas Instruments TMP401, TMP411,
-TMP431, TMP432, TMP435, and TMP461 chips. These chips implement one or two
+TMP431, TMP432, and TMP435 chips. These chips implement one or two
 remote and one local temperature sensors. Temperature is measured in degrees
 Celsius. Resolution of the remote sensor is 0.0625 degree. Local
 sensor resolution can be set to 0.5, 0.25, 0.125 or 0.0625 degree (not
@@ -84,10 +78,3 @@ some additional features.
 
 TMP432 is compatible with TMP401 and TMP431. It supports two external
 temperature sensors.
-
-TMP461 is compatible with TMP401. It supports offset correction
-that is applied to the remote sensor.
-
-* Sensor offset values are temperature values
-
-  Exported via sysfs attribute tempX_offset
diff --git a/Documentation/hwmon/tmp421.rst b/Documentation/hwmon/tmp421.rst
index ddcd5159c75d..a3002117bbd7 100644
--- a/Documentation/hwmon/tmp421.rst
+++ b/Documentation/hwmon/tmp421.rst
@@ -64,3 +64,13 @@ the temperature values via the following sysfs files:
 **temp[1-4]_input**
 
 **temp[2-4]_fault**
+
+Each sensor can be individually disabled via Devicetree or from sysfs
+via:
+
+**temp[1-4]_enable**
+
+If labels were specified in Devicetree, additional sysfs files will
+be present:
+
+**temp[1-4]_label**