Documentation/devicetree/bindings/dma/st,stm32-dmamux.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/st,stm32-dmamux.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: STMicroelectronics STM32 DMA MUX (DMA request router)
   8
   9 maintainers:
  10   - Amelie Delaunay <amelie.delaunay@foss.st.com>
  11
  12 allOf:
  13   - $ref: dma-router.yaml#
  14
  15 properties:
  16   "#dma-cells":
  17     const: 3
  18
  19   compatible:
  20     const: st,stm32h7-dmamux
  21
  22   reg:
  23     maxItems: 1
  24
  25   clocks:
  26     maxItems: 1
  27
  28   resets:
  29     maxItems: 1
  30
  31   access-controllers:
  32     minItems: 1
  33     maxItems: 2
  34
  35 required:
  36   - compatible
  37   - reg
  38   - dma-masters
  39
  40 unevaluatedProperties: false
  41
  42 examples:
  43   - |
  44     #include <dt-bindings/interrupt-controller/arm-gic.h>
  45     #include <dt-bindings/clock/stm32mp1-clks.h>
  46     #include <dt-bindings/reset/stm32mp1-resets.h>
  47     dma-router@40020800 {
  48       compatible = "st,stm32h7-dmamux";
  49       reg = <0x40020800 0x3c>;
  50       #dma-cells = <3>;
  51       dma-requests = <128>;
  52       dma-channels = <16>;
  53       dma-masters = <&dma1>, <&dma2>;
  54       clocks = <&timer_clk>;
  55     };
  56
  57 ...