FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/clock/renesas,9series.yaml

     # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
     %YAML 1.2
     ---
     $id: http://devicetree.org/schemas/clock/renesas,9series.yaml#
     $schema: http://devicetree.org/meta-schemas/core.yaml#
     
     title: Binding for Renesas 9-series I2C PCIe clock generators
     
     description: |
      The Renesas 9-series are I2C PCIe clock generators providing
      from 1 to 20 output clocks.
    
      When referencing the provided clock in the DT using phandle
      and clock specifier, the following mapping applies:
    
      - 9FGV0241:
        0 -- DIF0
        1 -- DIF1
    
    maintainers:
      - Marek Vasut <marex@denx.de>
    
    properties:
      compatible:
        enum:
          - renesas,9fgv0241
    
      reg:
        description: I2C device address
        enum: [ 0x68, 0x6a ]
    
      '#clock-cells':
        const: 1
    
      clocks:
        items:
          - description: XTal input clock
    
      renesas,out-amplitude-microvolt:
        enum: [ 600000, 700000, 800000, 900000 ]
        description: Output clock signal amplitude
    
      renesas,out-spread-spectrum:
        $ref: /schemas/types.yaml#/definitions/uint32
        enum: [ 100000, 99750, 99500 ]
        description: Output clock down spread in pcm (1/1000 of percent)
    
    patternProperties:
      "^DIF[0-19]$":
        type: object
        description:
          Description of one of the outputs (DIF0..DIF19).
    
        properties:
          renesas,slew-rate:
            $ref: /schemas/types.yaml#/definitions/uint32
            enum: [ 2000000, 3000000 ]
            description: Output clock slew rate select in V/ns
    
        additionalProperties: false
    
    required:
      - compatible
      - reg
      - clocks
      - '#clock-cells'
    
    additionalProperties: false
    
    examples:
      - |
        /* 25MHz reference crystal */
        ref25: ref25m {
            compatible = "fixed-clock";
            #clock-cells = <0>;
            clock-frequency = <25000000>;
        };
    
        i2c@0 {
            reg = <0x0 0x100>;
            #address-cells = <1>;
            #size-cells = <0>;
    
            rs9: clock-generator@6a {
                compatible = "renesas,9fgv0241";
                reg = <0x6a>;
                #clock-cells = <1>;
    
                clocks = <&ref25m>;
    
                DIF0 {
                    renesas,slew-rate = <3000000>;
                };
            };
        };
    
    ...

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