Documentation/devicetree/bindings/dma/renesas,usb-dmac.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/dma/renesas,usb-dmac.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Renesas USB DMA Controller
   8
   9 maintainers:
  10   - Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
  11
  12 allOf:
  13   - $ref: "dma-controller.yaml#"
  14
  15 properties:
  16   compatible:
  17     items:
  18       - enum:
  19           - renesas,r8a7743-usb-dmac  # RZ/G1M
  20           - renesas,r8a7744-usb-dmac  # RZ/G1N
  21           - renesas,r8a7745-usb-dmac  # RZ/G1E
  22           - renesas,r8a77470-usb-dmac # RZ/G1C
  23           - renesas,r8a774a1-usb-dmac # RZ/G2M
  24           - renesas,r8a774b1-usb-dmac # RZ/G2N
  25           - renesas,r8a774c0-usb-dmac # RZ/G2E
  26           - renesas,r8a7790-usb-dmac  # R-Car H2
  27           - renesas,r8a7791-usb-dmac  # R-Car M2-W
  28           - renesas,r8a7793-usb-dmac  # R-Car M2-N
  29           - renesas,r8a7794-usb-dmac  # R-Car E2
  30           - renesas,r8a7795-usb-dmac  # R-Car H3
  31           - renesas,r8a7796-usb-dmac  # R-Car M3-W
  32           - renesas,r8a77961-usb-dmac # R-Car M3-W+
  33           - renesas,r8a77965-usb-dmac # R-Car M3-N
  34           - renesas,r8a77990-usb-dmac # R-Car E3
  35           - renesas,r8a77995-usb-dmac # R-Car D3
  36       - const: renesas,usb-dmac
  37
  38   reg:
  39     maxItems: 1
  40
  41   interrupts:
  42     minItems: 2
  43     maxItems: 2
  44
  45   interrupt-names:
  46     items:
  47       - pattern: ch0
  48       - pattern: ch1
  49
  50   clocks:
  51     maxItems: 1
  52
  53   '#dma-cells':
  54     const: 1
  55     description:
  56       The cell specifies the channel number of the DMAC port connected to
  57       the DMA client.
  58
  59   dma-channels:
  60     const: 2
  61
  62   iommus:
  63     minItems: 2
  64     maxItems: 2
  65
  66   power-domains:
  67     maxItems: 1
  68
  69   resets:
  70     maxItems: 1
  71
  72 required:
  73   - compatible
  74   - reg
  75   - interrupts
  76   - interrupt-names
  77   - clocks
  78   - '#dma-cells'
  79   - dma-channels
  80   - power-domains
  81   - resets
  82
  83 additionalProperties: false
  84
  85 examples:
  86   - |
  87     #include <dt-bindings/clock/r8a7790-cpg-mssr.h>
  88     #include <dt-bindings/interrupt-controller/arm-gic.h>
  89     #include <dt-bindings/power/r8a7790-sysc.h>
  90
  91     usb_dmac0: dma-controller@e65a0000 {
  92         compatible = "renesas,r8a7790-usb-dmac", "renesas,usb-dmac";
  93         reg = <0xe65a0000 0x100>;
  94         interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>,
  95                      <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>;
  96         interrupt-names = "ch0", "ch1";
  97         clocks = <&cpg CPG_MOD 330>;
  98         power-domains = <&sysc R8A7790_PD_ALWAYS_ON>;
  99         resets = <&cpg 330>;
 100         #dma-cells = <1>;
 101         dma-channels = <2>;
 102     };