FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/clock/apple,nco.yaml

     # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
     %YAML 1.2
     ---
     $id: http://devicetree.org/schemas/clock/apple,nco.yaml#
     $schema: http://devicetree.org/meta-schemas/core.yaml#
     
     title: Apple SoCs' NCO block
     
     maintainers:
      - Martin Povišer <povik+lin@cutebit.org>
    
    description: |
      The NCO (Numerically Controlled Oscillator) block found on Apple SoCs
      such as the t8103 (M1) is a programmable clock generator performing
      fractional division of a high frequency input clock.
    
      It carries a number of independent channels and is typically used for
      generation of audio bitclocks.
    
    properties:
      compatible:
        items:
          - enum:
              - apple,t6000-nco
              - apple,t8103-nco
          - const: apple,nco
    
      clocks:
        description:
          Specifies the reference clock from which the output clocks
          are derived through fractional division.
        maxItems: 1
    
      '#clock-cells':
        const: 1
    
      reg:
        maxItems: 1
    
    required:
      - compatible
      - clocks
      - '#clock-cells'
      - reg
    
    additionalProperties: false
    
    examples:
      - |
        nco_clkref: clock-ref {
          compatible = "fixed-clock";
          #clock-cells = <0>;
          clock-frequency = <900000000>;
          clock-output-names = "nco-ref";
        };
    
        nco: clock-controller@23b044000 {
          compatible = "apple,t8103-nco", "apple,nco";
          reg = <0x3b044000 0x14000>;
          #clock-cells = <1>;
          clocks = <&nco_clkref>;
        };

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