xref: /linux/Documentation/devicetree/bindings/mailbox/mtk,adsp-mbox.yaml (revision a69dc41a4211b0da311ae3a3b79dd4497c9dfb60) 
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
7title: Mediatek ADSP mailbox
8
9maintainers:
10  - Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
11
12description: |
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
18properties:
19  compatible:
20    oneOf:
21      - enum:
22          - mediatek,mt8186-adsp-mbox
23          - mediatek,mt8195-adsp-mbox
24      - items:
25          - enum:
26              - mediatek,mt8188-adsp-mbox
27          - const: mediatek,mt8186-adsp-mbox
28
29
30  "#mbox-cells":
31    const: 0
32
33  reg:
34    maxItems: 1
35
36  interrupts:
37    maxItems: 1
38
39required:
40  - compatible
41  - "#mbox-cells"
42  - reg
43  - interrupts
44
45additionalProperties: false
46
47examples:
48  - |
49    #include <dt-bindings/interrupt-controller/arm-gic.h>
50    #include <dt-bindings/interrupt-controller/irq.h>
51
52    adsp_mailbox0:mailbox@10816000 {
53        compatible = "mediatek,mt8195-adsp-mbox";
54        #mbox-cells = <0>;
55        reg = <0x10816000 0x1000>;
56        interrupts = <GIC_SPI 702 IRQ_TYPE_LEVEL_HIGH 0>;
57    };
58