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-a100-dma
  25       - const: allwinner,sun50i-h6-dma
  26       - items:
  27           - const: allwinner,sun8i-r40-dma
  28           - const: allwinner,sun50i-a64-dma
  29
  30   reg:
  31     maxItems: 1
  32
  33   interrupts:
  34     maxItems: 1
  35
  36   clocks:
  37     minItems: 1
  38     maxItems: 2
  39
  40   clock-names:
  41     items:
  42       - const: bus
  43       - const: mbus
  44
  45   resets:
  46     maxItems: 1
  47
  48 required:
  49   - "#dma-cells"
  50   - compatible
  51   - reg
  52   - interrupts
  53   - clocks
  54   - resets
  55   - dma-channels
  56
  57 if:
  58   properties:
  59     compatible:
  60       enum:
  61         - allwinner,sun50i-a100-dma
  62         - allwinner,sun50i-h6-dma
  63
  64 then:
  65   properties:
  66     clocks:
  67       maxItems: 2
  68
  69   required:
  70     - clock-names
  71
  72 else:
  73   properties:
  74     clocks:
  75       maxItems: 1
  76
  77 unevaluatedProperties: false
  78
  79 examples:
  80   - |
  81     dma: dma-controller@1c02000 {
  82         compatible = "allwinner,sun50i-a64-dma";
  83         reg = <0x01c02000 0x1000>;
  84         interrupts = <0 50 4>;
  85         clocks = <&ccu 30>;
  86         dma-channels = <8>;
  87         dma-requests = <27>;
  88         resets = <&ccu 7>;
  89         #dma-cells = <1>;
  90     };
  91
  92 ...