Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml

   1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
   2 %YAML 1.2
   3 ---
   4 $id: http://devicetree.org/schemas/mailbox/mtk,adsp-mbox.yaml#
   5 $schema: http://devicetree.org/meta-schemas/core.yaml#
   6
   7 title: Mediatek ADSP mailbox
   8
   9 maintainers:
  10   - Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
  11
  12 description: |
  13   The MTK ADSP mailbox Inter-Processor Communication (IPC) enables the SoC
  14   to communicate with ADSP by passing messages through two mailbox channels.
  15   The MTK ADSP mailbox IPC also provides the ability for one processor to
  16   signal the other processor using interrupts.
  17
  18 properties:
  19   compatible:
  20     enum:
  21       - mediatek,mt8195-adsp-mbox
  22       - mediatek,mt8186-adsp-mbox
  23
  24   "#mbox-cells":
  25     const: 0
  26
  27   reg:
  28     maxItems: 1
  29
  30   interrupts:
  31     maxItems: 1
  32
  33 required:
  34   - compatible
  35   - "#mbox-cells"
  36   - reg
  37   - interrupts
  38
  39 additionalProperties: false
  40
  41 examples:
  42   - |
  43     #include <dt-bindings/interrupt-controller/arm-gic.h>
  44     #include <dt-bindings/interrupt-controller/irq.h>
  45
  46     adsp_mailbox0:mailbox@10816000 {
  47         compatible = "mediatek,mt8195-adsp-mbox";
  48         #mbox-cells = <0>;
  49         reg = <0x10816000 0x1000>;
  50         interrupts = <GIC_SPI 702 IRQ_TYPE_LEVEL_HIGH 0>;
  51     };