Merge tag 'pwm/for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux

Pull pwm updates from Uwe Kleine-König:
 "Apart from the usual mix of new drivers (pwm-argon-fan-hat), adding
  support for variants to existing drivers, minor improvements to both
  drivers and docs, device tree documenation updates, the noteworthy
  changes are:

   - A hwmon companion driver to pwm-mc33xs2410 living in drivers/hwmon
     and acked by Guenter Roeck

   - chardev support for PWM devices. This leverages atomic PWM updates
     to userspace and at the same time simplifies and accelerates PWM
     configuration changes"

* tag 'pwm/for-6.17-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ukleinek/linux: (35 commits)
  pwm: raspberrypi-poe: Fix spelling mistake "Firwmware" -> "Firmware"
  hwmon: add support for MC33XS2410 hardware monitoring
  pwm: mc33xs2410: add hwmon support
  pwm: img: Remove redundant pm_runtime_mark_last_busy() calls
  pwm: Expose PWM_WFHWSIZE in public header
  dt-bindings: pwm: Convert lpc32xx-pwm.txt to yaml format
  docs: pwm: Adapt Locking paragraph to reality
  pwm: twl-led: Drop driver local locking
  pwm: sun4i: Drop driver local locking
  pwm: sti: Drop driver local locking
  pwm: microchip-core: Drop driver local locking
  pwm: lpc18xx-sct: Drop driver local locking
  pwm: fsl-ftm: Drop driver local locking
  pwm: clps711x: Drop driver local locking
  pwm: atmel: Drop driver local locking
  pwm: argon-fan-hat: Add Argon40 Fan HAT support
  dt-bindings: pwm: argon40,fan-hat: Document Argon40 Fan HAT
  dt-bindings: vendor-prefixes: Document Argon40
  pwm: pwm-mediatek: Add support for PWM IP V3.0.2 in MT6991/MT8196
  pwm: pwm-mediatek: Pass PWM_CK_26M_SEL from platform data
  ...

Author: torvalds

Documentation/devicetree/bindings/pwm/adi,axi-pwmgen.yaml

@@ -14,7 +14,7 @@ description:
   The Analog Devices AXI PWM generator can generate PWM signals
   with variable pulse width and period.
 
-  https://wiki.analog.com/resources/fpga/docs/axi_pwm_gen
+  https://analogdevicesinc.github.io/hdl/library/axi_pwm_gen/index.html
 
 allOf:
   - $ref: pwm.yaml#

Documentation/devicetree/bindings/pwm/argon40,fan-hat.yaml

@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/argon40,fan-hat.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Argon40 Fan HAT PWM controller
+
+maintainers:
+  - Marek Vasut <[email protected]>
+
+description:
+  The trivial PWM on Argon40 Fan HAT, which is a RaspberryPi blower fan
+  hat which can be controlled over I2C, generates a fixed 30 kHz period
+  PWM signal with configurable 0..100% duty cycle to control the fan
+  speed.
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: argon40,fan-hat
+
+  reg:
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 3
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      pwm@1a {
+        compatible = "argon40,fan-hat";
+        reg = <0x1a>;
+        #pwm-cells = <3>;
+      };
+    };

Documentation/devicetree/bindings/pwm/lpc1850-sct-pwm.txt

@@ -11,26 +11,47 @@ maintainers:
 
 allOf:
   - $ref: pwm.yaml#
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: spacemit,k1-pwm
+    then:
+      properties:
+        "#pwm-cells":
+          const: 3
+    else:
+      properties:
+        "#pwm-cells":
+          const: 1
+          description: |
+            Used for specifying the period length in nanoseconds.
 
 properties:
   compatible:
-    enum:
-      - marvell,pxa250-pwm
-      - marvell,pxa270-pwm
-      - marvell,pxa168-pwm
-      - marvell,pxa910-pwm
+    oneOf:
+      - enum:
+          - marvell,pxa250-pwm
+          - marvell,pxa270-pwm
+          - marvell,pxa168-pwm
+          - marvell,pxa910-pwm
+      - items:
+          - const: spacemit,k1-pwm
+          - const: marvell,pxa910-pwm
 
   reg:
     # Length should be 0x10
     maxItems: 1
 
   "#pwm-cells":
-    # Used for specifying the period length in nanoseconds
-    const: 1
+    description: Number of cells in a pwm specifier.
 
   clocks:
     maxItems: 1
 
+  resets:
+    maxItems: 1
+
 required:
   - compatible
   - reg

Documentation/devicetree/bindings/pwm/lpc32xx-pwm.txt

@@ -18,6 +18,7 @@ properties:
       - enum:
           - mediatek,mt2712-pwm
           - mediatek,mt6795-pwm
+          - mediatek,mt6991-pwm
           - mediatek,mt7622-pwm
           - mediatek,mt7623-pwm
           - mediatek,mt7628-pwm
@@ -32,6 +33,10 @@ properties:
           - enum:
               - mediatek,mt8195-pwm
           - const: mediatek,mt8183-pwm
+      - items:
+          - enum:
+              - mediatek,mt8196-pwm
+          - const: mediatek,mt6991-pwm
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml

@@ -0,0 +1,54 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/nxp,lpc1850-sct-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP LPC18xx State Configurable Timer
+
+maintainers:
+  - Frank Li <[email protected]>
+
+properties:
+  compatible:
+    const: nxp,lpc1850-sct-pwm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  clock-names:
+    items:
+      - const: pwm
+
+  '#pwm-cells':
+    const: 3
+
+  resets:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - '#pwm-cells'
+
+allOf:
+  - $ref: pwm.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/lpc18xx-ccu.h>
+
+    pwm@40000000 {
+        compatible = "nxp,lpc1850-sct-pwm";
+        reg = <0x40000000 0x1000>;
+        clocks =<&ccu1 CLK_CPU_SCT>;
+        clock-names = "pwm";
+        #pwm-cells = <3>;
+    };

Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml

@@ -0,0 +1,44 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/nxp,lpc3220-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP LPC32XX PWM controller
+
+maintainers:
+  - Frank Li <[email protected]>
+
+properties:
+  compatible:
+    enum:
+      - nxp,lpc3220-pwm
+      - nxp,lpc3220-motor-pwm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  '#pwm-cells':
+    const: 3
+
+required:
+  - compatible
+  - reg
+  - '#pwm-cells'
+
+allOf:
+  - $ref: pwm.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    pwm@4005c000 {
+        compatible = "nxp,lpc3220-pwm";
+        reg = <0x4005c000 0x4>;
+        #pwm-cells = <3>;
+    };
+

Documentation/devicetree/bindings/pwm/nxp,lpc1850-sct-pwm.yaml

@@ -17,7 +17,9 @@ allOf:
 
 properties:
   compatible:
-    const: sophgo,sg2042-pwm
+    enum:
+      - sophgo,sg2042-pwm
+      - sophgo,sg2044-pwm
 
   reg:
     maxItems: 1

Documentation/devicetree/bindings/pwm/nxp,lpc3220-pwm.yaml

@@ -149,6 +149,8 @@ patternProperties:
     description: Arctic Sand
   "^arcx,.*":
     description: arcx Inc. / Archronix Inc.
+  "^argon40,.*":
+    description: Argon 40 Technologies Limited
   "^ariaboard,.*":
     description: Shanghai Novotech Co., Ltd. (Ariaboard)
   "^aries,.*":