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) bindings
   8
   9 maintainers:
  10   - Amelie Delaunay <amelie.delaunay@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 required:
  32   - compatible
  33   - reg
  34   - dma-masters
  35
  36 examples:
  37   - |
  38     #include <dt-bindings/interrupt-controller/arm-gic.h>
  39     #include <dt-bindings/clock/stm32mp1-clks.h>
  40     #include <dt-bindings/reset/stm32mp1-resets.h>
  41     dma-router@40020800 {
  42       compatible = "st,stm32h7-dmamux";
  43       reg = <0x40020800 0x3c>;
  44       #dma-cells = <3>;
  45       dma-requests = <128>;
  46       dma-channels = <16>;
  47       dma-masters = <&dma1 &dma2>;
  48       clocks = <&timer_clk>;
  49     };
  50
  51 ...
  52