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
 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  "#mbox-cells":
30    const: 0
31
32  reg:
33    maxItems: 1
34
35  interrupts:
36    maxItems: 1
37
38required:
39  - compatible
40  - "#mbox-cells"
41  - reg
42  - interrupts
43
44additionalProperties: false
45
46examples:
47  - |
48    #include <dt-bindings/interrupt-controller/arm-gic.h>
49    #include <dt-bindings/interrupt-controller/irq.h>
50
51    adsp_mailbox0:mailbox@10816000 {
52        compatible = "mediatek,mt8195-adsp-mbox";
53        #mbox-cells = <0>;
54        reg = <0x10816000 0x1000>;
55        interrupts = <GIC_SPI 702 IRQ_TYPE_LEVEL_HIGH 0>;
56    };