xref: /freebsd/sys/contrib/device-tree/Bindings/dma/st,stm32-dmamux.yaml (revision 7d0873ebb83b19ba1e8a89e679470d885efe12e3)

# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/dma/st,stm32-dmamux.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#

title: STMicroelectronics STM32 DMA MUX (DMA request router)

maintainers:
  - Amelie Delaunay <amelie.delaunay@foss.st.com>

allOf:
  - $ref: dma-router.yaml#

properties:
  "#dma-cells":
    const: 3

  compatible:
    const: st,stm32h7-dmamux

  reg:
    maxItems: 1

  clocks:
    maxItems: 1

  resets:
    maxItems: 1

  access-controllers:
    minItems: 1
    maxItems: 2

required:
  - compatible
  - reg
  - dma-masters

unevaluatedProperties: false

examples:
  - |
    #include <dt-bindings/interrupt-controller/arm-gic.h>
    #include <dt-bindings/clock/stm32mp1-clks.h>
    #include <dt-bindings/reset/stm32mp1-resets.h>
    dma-router@40020800 {
      compatible = "st,stm32h7-dmamux";
      reg = <0x40020800 0x3c>;
      #dma-cells = <3>;
      dma-requests = <128>;
      dma-channels = <16>;
      dma-masters = <&dma1>, <&dma2>;
      clocks = <&timer_clk>;
    };

...