Documentation/devicetree/bindings/dma/owl-dma.yaml

   1 # SPDX-License-Identifier: GPL-2.0
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/dma/owl-dma.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Actions Semi Owl SoCs DMA controller
   8
   9 description: |
  10   The OWL DMA is a general-purpose direct memory access controller capable of
  11   supporting 10 and 12 independent DMA channels for S700 and S900 SoCs
  12   respectively.
  13
  14 maintainers:
  15   - Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
  16
  17 allOf:
  18   - $ref: "dma-controller.yaml#"
  19
  20 properties:
  21   compatible:
  22     enum:
  23       - actions,s900-dma
  24       - actions,s700-dma
  25
  26   reg:
  27     maxItems: 1
  28
  29   interrupts:
  30     description:
  31       controller supports 4 interrupts, which are freely assignable to the
  32       DMA channels.
  33     maxItems: 4
  34
  35   "#dma-cells":
  36     const: 1
  37
  38   dma-channels:
  39     maximum: 12
  40
  41   dma-requests:
  42     maximum: 46
  43
  44   clocks:
  45     maxItems: 1
  46     description:
  47       Phandle and Specifier of the clock feeding the DMA controller.
  48
  49   power-domains:
  50     maxItems: 1
  51
  52 required:
  53   - compatible
  54   - reg
  55   - interrupts
  56   - "#dma-cells"
  57   - dma-channels
  58   - dma-requests
  59   - clocks
  60
  61 unevaluatedProperties: false
  62
  63 examples:
  64   - |
  65     #include <dt-bindings/interrupt-controller/arm-gic.h>
  66     dma: dma-controller@e0260000 {
  67         compatible = "actions,s900-dma";
  68         reg = <0xe0260000 0x1000>;
  69         interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
  70                      <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
  71                      <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>,
  72                      <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
  73         #dma-cells = <1>;
  74         dma-channels = <12>;
  75         dma-requests = <46>;
  76         clocks = <&clock 22>;
  77     };
  78
  79 ...