dt-bindings: pwm: Convert Amlogic Meson PWM binding

Convert Amlogic Meson PWM binding to yaml.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>

Author: hkallweit

Documentation/devicetree/bindings/pwm/pwm-amlogic.yaml

@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/pwm-amlogic.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic PWM
+
+maintainers:
+  - Heiner Kallweit <hkallweit1@gmail.com>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    oneOf:
+      - enum:
+          - amlogic,meson8b-pwm
+          - amlogic,meson-gxbb-pwm
+          - amlogic,meson-gxbb-ao-pwm
+          - amlogic,meson-axg-ee-pwm
+          - amlogic,meson-axg-ao-pwm
+          - amlogic,meson-g12a-ee-pwm
+          - amlogic,meson-g12a-ao-pwm-ab
+          - amlogic,meson-g12a-ao-pwm-cd
+          - amlogic,meson-s4-pwm
+      - items:
+          - const: amlogic,meson-gx-pwm
+          - const: amlogic,meson-gxbb-pwm
+      - items:
+          - const: amlogic,meson-gx-ao-pwm
+          - const: amlogic,meson-gxbb-ao-pwm
+      - items:
+          - const: amlogic,meson8-pwm
+          - const: amlogic,meson8b-pwm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    oneOf:
+      - items:
+          - enum: [clkin0, clkin1]
+      - items:
+          - const: clkin0
+          - const: clkin1
+
+  "#pwm-cells":
+    const: 3
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    pwm@8550 {
+      compatible = "amlogic,meson-gxbb-pwm";
+      reg = <0x08550 0x10>;
+      clocks = <&xtal>, <&xtal>;
+      clock-names = "clkin0", "clkin1";
+      #pwm-cells = <3>;
+    };