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     oneOf:
  23       - const: allwinner,sun50i-a64-dma
  24       - const: allwinner,sun50i-h6-dma
  25       - items:
  26           - const: allwinner,sun8i-r40-dma
  27           - const: allwinner,sun50i-a64-dma
  28
  29   reg:
  30     maxItems: 1
  31
  32   interrupts:
  33     maxItems: 1
  34
  35   clocks:
  36     minItems: 1
  37     maxItems: 2
  38
  39   clock-names:
  40     items:
  41       - const: bus
  42       - const: mbus
  43
  44   resets:
  45     maxItems: 1
  46
  47 required:
  48   - "#dma-cells"
  49   - compatible
  50   - reg
  51   - interrupts
  52   - clocks
  53   - resets
  54   - dma-channels
  55
  56 if:
  57   properties:
  58     compatible:
  59       const: allwinner,sun50i-h6-dma
  60
  61 then:
  62   properties:
  63     clocks:
  64       maxItems: 2
  65
  66   required:
  67     - clock-names
  68
  69 else:
  70   properties:
  71     clocks:
  72       maxItems: 1
  73
  74 unevaluatedProperties: false
  75
  76 examples:
  77   - |
  78     dma: dma-controller@1c02000 {
  79         compatible = "allwinner,sun50i-a64-dma";
  80         reg = <0x01c02000 0x1000>;
  81         interrupts = <0 50 4>;
  82         clocks = <&ccu 30>;
  83         dma-channels = <8>;
  84         dma-requests = <27>;
  85         resets = <&ccu 7>;
  86         #dma-cells = <1>;
  87     };
  88
  89 ...