Documentation/devicetree/bindings/dma/allwinner,sun50i-a64-dma.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/dma/allwinner,sun50i-a64-dma.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Allwinner A64 DMA Controller Device Tree Bindings
   8
   9 maintainers:
  10   - Chen-Yu Tsai <wens@csie.org>
  11   - Maxime Ripard <mripard@kernel.org>
  12
  13 allOf:
  14   - $ref: "dma-controller.yaml#"
  15
  16 properties:
  17   "#dma-cells":
  18     const: 1
  19     description: The cell is the request line number.
  20
  21   compatible:
  22     enum:
  23       - allwinner,sun50i-a64-dma
  24       - allwinner,sun50i-h6-dma
  25
  26   reg:
  27     maxItems: 1
  28
  29   interrupts:
  30     maxItems: 1
  31
  32   clocks:
  33     minItems: 1
  34     maxItems: 2
  35
  36   clock-names:
  37     items:
  38       - const: bus
  39       - const: mbus
  40
  41   resets:
  42     maxItems: 1
  43
  44 required:
  45   - "#dma-cells"
  46   - compatible
  47   - reg
  48   - interrupts
  49   - clocks
  50   - resets
  51   - dma-channels
  52
  53 if:
  54   properties:
  55     compatible:
  56       const: allwinner,sun50i-h6-dma
  57
  58 then:
  59   properties:
  60     clocks:
  61       maxItems: 2
  62
  63   required:
  64     - clock-names
  65
  66 else:
  67   properties:
  68     clocks:
  69       maxItems: 1
  70
  71 unevaluatedProperties: false
  72
  73 examples:
  74   - |
  75     dma: dma-controller@1c02000 {
  76         compatible = "allwinner,sun50i-a64-dma";
  77         reg = <0x01c02000 0x1000>;
  78         interrupts = <0 50 4>;
  79         clocks = <&ccu 30>;
  80         dma-channels = <8>;
  81         dma-requests = <27>;
  82         resets = <&ccu 7>;
  83         #dma-cells = <1>;
  84     };
  85
  86 ...