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 independent DMA channels for the Actions Semi S700 SoC and 12
  12   independent DMA channels for the S500 and S900 SoC variants.
  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,s500-dma
  24       - actions,s700-dma
  25       - actions,s900-dma
  26
  27   reg:
  28     maxItems: 1
  29
  30   interrupts:
  31     description:
  32       controller supports 4 interrupts, which are freely assignable to the
  33       DMA channels.
  34     maxItems: 4
  35
  36   "#dma-cells":
  37     const: 1
  38
  39   dma-channels:
  40     maximum: 12
  41
  42   dma-requests:
  43     maximum: 46
  44
  45   clocks:
  46     maxItems: 1
  47     description:
  48       Phandle and Specifier of the clock feeding the DMA controller.
  49
  50   power-domains:
  51     maxItems: 1
  52
  53 required:
  54   - compatible
  55   - reg
  56   - interrupts
  57   - "#dma-cells"
  58   - dma-channels
  59   - dma-requests
  60   - clocks
  61
  62 unevaluatedProperties: false
  63
  64 examples:
  65   - |
  66     #include <dt-bindings/interrupt-controller/arm-gic.h>
  67     dma: dma-controller@e0260000 {
  68         compatible = "actions,s900-dma";
  69         reg = <0xe0260000 0x1000>;
  70         interrupts = <GIC_SPI 57 IRQ_TYPE_LEVEL_HIGH>,
  71                      <GIC_SPI 58 IRQ_TYPE_LEVEL_HIGH>,
  72                      <GIC_SPI 59 IRQ_TYPE_LEVEL_HIGH>,
  73                      <GIC_SPI 60 IRQ_TYPE_LEVEL_HIGH>;
  74         #dma-cells = <1>;
  75         dma-channels = <12>;
  76         dma-requests = <46>;
  77         clocks = <&clock 22>;
  78     };
  79
  80 ...