Merge tag 'pwm/for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm

Pull pwm updates from Thierry Reding:
 "This rather small set of changes includes some minor fixes and
  improvements.

  The AB8500 driver gained support for reading the initial hardware
  state and the Synopsys DesignWare driver received some work to prepare
  for device tree and platform support"

* tag 'pwm/for-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/thierry.reding/linux-pwm:
  pwm: dwc: Use devm_pwmchip_add()
  pwm: dwc: Move memory allocation to own function
  pwm: dwc: Change &pci->dev to dev in probe
  dt-bindings: pwm: Document Synopsys DesignWare snps,pwm-dw-apb-timers-pwm2
  pwm: iqs620a: Replace one remaining instance of regmap_update_bits()
  pwm: ab8500: Implement .get_state()
  pwm: ab8500: Fix calculation of duty and period
  pwm: lp3943: Drop unused i2c include
  dt-bindings: pwm: mediatek: Convert pwm-mediatek to DT schema
  pwm: stm32-lp: fix the check on arr and cmp registers update
  pwm: Move pwm_capture() dummy to restore order
  pwm: sifive: Always let the first pwm_apply_state succeed

3 files changed, 161 insertions, 52 deletions

diff --git a/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml b/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml
new file mode 100644
index 000000000000..dbc974bff9e9
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/mediatek,mt2712-pwm.yaml
@@ -0,0 +1,93 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/mediatek,mt2712-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek PWM Controller
+
+maintainers:
+  - John Crispin <john@phrozen.org>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - mediatek,mt2712-pwm
+          - mediatek,mt6795-pwm
+          - mediatek,mt7622-pwm
+          - mediatek,mt7623-pwm
+          - mediatek,mt7628-pwm
+          - mediatek,mt7629-pwm
+          - mediatek,mt8183-pwm
+          - mediatek,mt8365-pwm
+          - mediatek,mt8516-pwm
+      - items:
+          - enum:
+              - mediatek,mt8195-pwm
+          - const: mediatek,mt8183-pwm
+
+  reg:
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 2
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 2
+    maxItems: 10
+
+  clock-names:
+    description:
+      This controller needs two input clocks for its core and one
+      clock for each PWM output.
+    minItems: 2
+    items:
+      - const: top
+      - const: main
+      - const: pwm1
+      - const: pwm2
+      - const: pwm3
+      - const: pwm4
+      - const: pwm5
+      - const: pwm6
+      - const: pwm7
+      - const: pwm8
+
+required:
+  - compatible
+  - reg
+  - "#pwm-cells"
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/mt2712-clk.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    pwm0: pwm@11006000 {
+        compatible = "mediatek,mt2712-pwm";
+        reg = <0x11006000 0x1000>;
+        #pwm-cells = <2>;
+        interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_LOW>;
+        clocks = <&topckgen CLK_TOP_PWM_SEL>, <&pericfg CLK_PERI_PWM>,
+                 <&pericfg CLK_PERI_PWM0>, <&pericfg CLK_PERI_PWM1>,
+                 <&pericfg CLK_PERI_PWM2>, <&pericfg CLK_PERI_PWM3>,
+                 <&pericfg CLK_PERI_PWM4>, <&pericfg CLK_PERI_PWM5>,
+                 <&pericfg CLK_PERI_PWM6>, <&pericfg CLK_PERI_PWM7>;
+        clock-names = "top", "main",
+                      "pwm1", "pwm2",
+                      "pwm3", "pwm4",
+                      "pwm5", "pwm6",
+                      "pwm7", "pwm8";
+    };
diff --git a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
deleted file mode 100644
index 554c96b6d0c3..000000000000
--- a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
+++ /dev/null
@@ -1,52 +0,0 @@
-MediaTek PWM controller
-
-Required properties:
- - compatible: should be "mediatek,<name>-pwm":
-   - "mediatek,mt2712-pwm": found on mt2712 SoC.
-   - "mediatek,mt6795-pwm": found on mt6795 SoC.
-   - "mediatek,mt7622-pwm": found on mt7622 SoC.
-   - "mediatek,mt7623-pwm": found on mt7623 SoC.
-   - "mediatek,mt7628-pwm": found on mt7628 SoC.
-   - "mediatek,mt7629-pwm": found on mt7629 SoC.
-   - "mediatek,mt8183-pwm": found on mt8183 SoC.
-   - "mediatek,mt8195-pwm", "mediatek,mt8183-pwm": found on mt8195 SoC.
-   - "mediatek,mt8365-pwm": found on mt8365 SoC.
-   - "mediatek,mt8516-pwm": found on mt8516 SoC.
- - reg: physical base address and length of the controller's registers.
- - #pwm-cells: must be 2. See pwm.yaml in this directory for a description of
-   the cell format.
- - clocks: phandle and clock specifier of the PWM reference clock.
- - clock-names: must contain the following, except for MT7628 which
-                has no clocks
-   - "top": the top clock generator
-   - "main": clock used by the PWM core
-   - "pwm1-3": the three per PWM clocks for mt8365
-   - "pwm1-8": the eight per PWM clocks for mt2712
-   - "pwm1-6": the six per PWM clocks for mt7622
-   - "pwm1-5": the five per PWM clocks for mt7623
-   - "pwm1"  : the PWM1 clock for mt7629
- - pinctrl-names: Must contain a "default" entry.
- - pinctrl-0: One property must exist for each entry in pinctrl-names.
-   See pinctrl/pinctrl-bindings.txt for details of the property values.
-
-Optional properties:
-- assigned-clocks: Reference to the PWM clock entries.
-- assigned-clock-parents: The phandle of the parent clock of PWM clock.
-
-Example:
-	pwm0: pwm@11006000 {
-		compatible = "mediatek,mt7623-pwm";
-		reg = <0 0x11006000 0 0x1000>;
-		#pwm-cells = <2>;
-		clocks = <&topckgen CLK_TOP_PWM_SEL>,
-			 <&pericfg CLK_PERI_PWM>,
-			 <&pericfg CLK_PERI_PWM1>,
-			 <&pericfg CLK_PERI_PWM2>,
-			 <&pericfg CLK_PERI_PWM3>,
-			 <&pericfg CLK_PERI_PWM4>,
-			 <&pericfg CLK_PERI_PWM5>;
-		clock-names = "top", "main", "pwm1", "pwm2",
-			      "pwm3", "pwm4", "pwm5";
-		pinctrl-names = "default";
-		pinctrl-0 = <&pwm0_pins>;
-	};
diff --git a/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml b/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml
new file mode 100644
index 000000000000..9aabdb373afa
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/snps,dw-apb-timers-pwm2.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2022 SiFive, Inc.
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/snps,dw-apb-timers-pwm2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Synopsys DW-APB timers PWM controller
+
+maintainers:
+  - Ben Dooks <ben.dooks@sifive.com>
+
+description:
+  This describes the DesignWare APB timers module when used in the PWM
+  mode. The IP core can be generated with various options which can
+  control the functionality, the number of PWMs available and other
+  internal controls the designer requires.
+
+  The IP block has a version register so this can be used for detection
+  instead of having to encode the IP version number in the device tree
+  comaptible.
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: snps,dw-apb-timers-pwm2
+
+  reg:
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 3
+
+  clocks:
+    items:
+      - description: Interface bus clock
+      - description: PWM reference clock
+
+  clock-names:
+    items:
+      - const: bus
+      - const: timer
+
+  snps,pwm-number:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description: The number of PWM channels configured for this instance
+    enum: [1, 2, 3, 4, 5, 6, 7, 8]
+
+required:
+  - compatible
+  - reg
+  - "#pwm-cells"
+  - clocks
+  - clock-names
+
+additionalProperties: false
+
+examples:
+  - |
+    pwm: pwm@180000 {
+      compatible = "snps,dw-apb-timers-pwm2";
+      reg = <0x180000 0x200>;
+      #pwm-cells = <3>;
+      clocks = <&bus>, <&timer>;
+      clock-names = "bus", "timer";
+    };