1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/mailbox/mtk 4 $id: http://devicetree.org/schemas/mailbox/mtk,adsp-mbox.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Mediatek ADSP mailbox 7 title: Mediatek ADSP mailbox
8 8
9 maintainers: 9 maintainers:
10 - Allen-KH Cheng <Allen-KH.Cheng@mediatek.com 10 - Allen-KH Cheng <Allen-KH.Cheng@mediatek.com>
11 11
12 description: | 12 description: |
13 The MTK ADSP mailbox Inter-Processor Communi 13 The MTK ADSP mailbox Inter-Processor Communication (IPC) enables the SoC
14 to communicate with ADSP by passing messages 14 to communicate with ADSP by passing messages through two mailbox channels.
15 The MTK ADSP mailbox IPC also provides the a 15 The MTK ADSP mailbox IPC also provides the ability for one processor to
16 signal the other processor using interrupts. 16 signal the other processor using interrupts.
17 17
18 properties: 18 properties:
19 compatible: 19 compatible:
20 oneOf: 20 oneOf:
21 - enum: 21 - enum:
22 - mediatek,mt8186-adsp-mbox 22 - mediatek,mt8186-adsp-mbox
23 - mediatek,mt8195-adsp-mbox 23 - mediatek,mt8195-adsp-mbox
24 - items: 24 - items:
25 - enum: 25 - enum:
26 - mediatek,mt8188-adsp-mbox 26 - mediatek,mt8188-adsp-mbox
27 - const: mediatek,mt8186-adsp-mbox 27 - const: mediatek,mt8186-adsp-mbox
28 28
29 29
30 "#mbox-cells": 30 "#mbox-cells":
31 const: 0 31 const: 0
32 32
33 reg: 33 reg:
34 maxItems: 1 34 maxItems: 1
35 35
36 interrupts: 36 interrupts:
37 maxItems: 1 37 maxItems: 1
38 38
39 required: 39 required:
40 - compatible 40 - compatible
41 - "#mbox-cells" 41 - "#mbox-cells"
42 - reg 42 - reg
43 - interrupts 43 - interrupts
44 44
45 additionalProperties: false 45 additionalProperties: false
46 46
47 examples: 47 examples:
48 - | 48 - |
49 #include <dt-bindings/interrupt-controller 49 #include <dt-bindings/interrupt-controller/arm-gic.h>
50 #include <dt-bindings/interrupt-controller 50 #include <dt-bindings/interrupt-controller/irq.h>
51 51
52 adsp_mailbox0:mailbox@10816000 { 52 adsp_mailbox0:mailbox@10816000 {
53 compatible = "mediatek,mt8195-adsp-mbo 53 compatible = "mediatek,mt8195-adsp-mbox";
54 #mbox-cells = <0>; 54 #mbox-cells = <0>;
55 reg = <0x10816000 0x1000>; 55 reg = <0x10816000 0x1000>;
56 interrupts = <GIC_SPI 702 IRQ_TYPE_LEV 56 interrupts = <GIC_SPI 702 IRQ_TYPE_LEVEL_HIGH 0>;
57 }; 57 };
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