FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/Bindings/clock/sifive/fu540-prci.yaml

     # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
     # Copyright (C) 2020 SiFive, Inc.
     %YAML 1.2
     ---
     $id: http://devicetree.org/schemas/clock/sifive/fu540-prci.yaml#
     $schema: http://devicetree.org/meta-schemas/core.yaml#
     
     title: SiFive FU540 Power Reset Clock Interrupt Controller (PRCI)
     
    maintainers:
      - Sagar Kadam <sagar.kadam@sifive.com>
      - Paul Walmsley  <paul.walmsley@sifive.com>
    
    description:
      On the FU540 family of SoCs, most system-wide clock and reset integration
      is via the PRCI IP block.
      The clock consumer should specify the desired clock via the clock ID
      macros defined in include/dt-bindings/clock/sifive-fu540-prci.h.
      These macros begin with PRCI_CLK_.
    
      The hfclk and rtcclk nodes are required, and represent physical
      crystals or resonators located on the PCB.  These nodes should be present
      underneath /, rather than /soc.
    
    properties:
      compatible:
        const: sifive,fu540-c000-prci
    
      reg:
        maxItems: 1
    
      clocks:
        items:
          - description: high frequency clock.
          - description: RTL clock.
    
      clock-names:
        items:
          - const: hfclk
          - const: rtcclk
    
      "#clock-cells":
        const: 1
    
    required:
      - compatible
      - reg
      - clocks
      - "#clock-cells"
    
    additionalProperties: false
    
    examples:
      - |
        prci: clock-controller@10000000 {
          compatible = "sifive,fu540-c000-prci";
          reg = <0x10000000 0x1000>;
          clocks = <&hfclk>, <&rtcclk>;
          #clock-cells = <1>;
        };

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