xref: /freebsd/sys/contrib/device-tree/Bindings/pwm/pwm-tiehrpwm.yaml (revision c9ccf3a3)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pwm/pwm-tiehrpwm.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: TI SOC EHRPWM based PWM controller

maintainers:
  - Vignesh R <vigneshr@ti.com>

allOf:
  - $ref: pwm.yaml#

properties:
  compatible:
    oneOf:
      - const: ti,am3352-ehrpwm
      - items:
          - enum:
              - ti,da850-ehrpwm
              - ti,am4372-ehrpwm
              - ti,dra746-ehrpwm
              - ti,am654-ehrpwm
              - ti,am64-epwm
          - const: ti,am3352-ehrpwm

  reg:
    maxItems: 1

  "#pwm-cells":
    const: 3
    description: |
      See pwm.yaml in this directory for a description of the cells format.
      The only third cell flag supported by this binding is PWM_POLARITY_INVERTED.

  clock-names:
    items:
      - const: tbclk
      - const: fck

  clocks:
    maxItems: 2

  power-domains:
    maxItems: 1

required:
  - compatible
  - reg
  - clocks
  - clock-names

additionalProperties: false

examples:
  - |
    ehrpwm0: pwm@48300200 { /* EHRPWM on am33xx */
        compatible = "ti,am3352-ehrpwm";
        #pwm-cells = <3>;
        reg = <0x48300200 0x100>;
        clocks = <&ehrpwm0_tbclk>, <&l4ls_gclk>;
        clock-names = "tbclk", "fck";
    };