owl-dma.yaml

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    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 ...

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sys/contrib/device-tree/Bindings/dma/owl-dma.yaml