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Open Menu /Documentation/devicetree/bindings/clock/allwinner,sun4i-a10-ccu.yaml 
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# SPDX-License-Identifier: GPL-2.0
%YAML 1.2
---
$id: http://devicetree.org/schemas/clock/allwinner,sun4i-a10-ccu.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: Allwinner Clock Control Unit Device Tree Bindings

maintainers:
  - Chen-Yu Tsai <wens@csie.org>
  - Maxime Ripard <maxime.ripard@bootlin.com>

properties:
  "#clock-cells":
    const: 1

  "#reset-cells":
    const: 1

  compatible:
    enum:
      - allwinner,sun4i-a10-ccu
      - allwinner,sun5i-a10s-ccu
      - allwinner,sun5i-a13-ccu
      - allwinner,sun6i-a31-ccu
      - allwinner,sun7i-a20-ccu
      - allwinner,sun8i-a23-ccu
      - allwinner,sun8i-a33-ccu
      - allwinner,sun8i-a83t-ccu
      - allwinner,sun8i-a83t-r-ccu
      - allwinner,sun8i-h3-ccu
      - allwinner,sun8i-h3-r-ccu
      - allwinner,sun8i-r40-ccu
      - allwinner,sun8i-v3-ccu
      - allwinner,sun8i-v3s-ccu
      - allwinner,sun9i-a80-ccu
      - allwinner,sun50i-a64-ccu
      - allwinner,sun50i-a64-r-ccu
      - allwinner,sun50i-h5-ccu
      - allwinner,sun50i-h6-ccu
      - allwinner,sun50i-h6-r-ccu
      - allwinner,suniv-f1c100s-ccu
      - nextthing,gr8-ccu

  reg:
    maxItems: 1

  clocks:
    minItems: 2
    maxItems: 4
    items:
      - description: High Frequency Oscillator (usually at 24MHz)
      - description: Low Frequency Oscillator (usually at 32kHz)
      - description: Internal Oscillator
      - description: Peripherals PLL

  clock-names:
    minItems: 2
    maxItems: 4
    items:
      - const: hosc
      - const: losc
      - const: iosc
      - const: pll-periph

required:
  - "#clock-cells"
  - "#reset-cells"
  - compatible
  - reg
  - clocks
  - clock-names

if:
  properties:
    compatible:
      enum:
        - allwinner,sun8i-a83t-r-ccu
        - allwinner,sun8i-h3-r-ccu
        - allwinner,sun50i-a64-r-ccu
        - allwinner,sun50i-h6-r-ccu

then:
  properties:
    clocks:
      minItems: 4
      maxItems: 4

    clock-names:
      minItems: 4
      maxItems: 4

else:
  if:
    properties:
      compatible:
        const: allwinner,sun50i-h6-ccu

  then:
    properties:
      clocks:
        minItems: 3
        maxItems: 3

      clock-names:
        minItems: 3
        maxItems: 3

  else:
    properties:
      clocks:
        minItems: 2
        maxItems: 2

      clock-names:
        minItems: 2
        maxItems: 2

additionalProperties: false

examples:
  - |
    ccu: clock@1c20000 {
        compatible = "allwinner,sun8i-h3-ccu";
        reg = <0x01c20000 0x400>;
        clocks = <&osc24M>, <&osc32k>;
        clock-names = "hosc", "losc";
        #clock-cells = <1>;
        #reset-cells = <1>;
    };

  - |
    r_ccu: clock@1f01400 {
        compatible = "allwinner,sun50i-a64-r-ccu";
        reg = <0x01f01400 0x100>;
        clocks = <&osc24M>, <&osc32k>, <&iosc>, <&ccu 11>;
        clock-names = "hosc", "losc", "iosc", "pll-periph";
        #clock-cells = <1>;
        #reset-cells = <1>;
    };

...