xref: /freebsd/sys/contrib/device-tree/Bindings/mailbox/mtk,adsp-mbox.yaml (revision 7ef62cebc2f965b0f640263e179276928885e33d) 
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    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
33required:
34  - compatible
35  - "#mbox-cells"
36  - reg
37  - interrupts
38
39additionalProperties: false
40
41examples:
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    };
52