xref: /linux/Documentation/devicetree/bindings/mailbox/brcm,bcm74110-mbox.yaml (revision b20b8538b310f5458bd7a08b7ff8a76cc3c28d24) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/mailbox/brcm,bcm74110-mbox.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Broadcom BCM74110 Mailbox
8
9maintainers:
10  - Justin Chen <justin.chen@broadcom.com>
11  - Florian Fainelli <florian.fainelli@broadcom.com>
12
13description: Broadcom mailbox hardware first introduced with 74110
14
15properties:
16  compatible:
17    enum:
18      - brcm,bcm74110-mbox
19
20  reg:
21    maxItems: 1
22
23  interrupts:
24    items:
25      - description: RX doorbell and watermark interrupts
26      - description: TX doorbell and watermark interrupts
27
28  "#mbox-cells":
29    const: 2
30    description:
31      The first cell is channel type and second cell is shared memory slot
32
33  brcm,rx:
34    $ref: /schemas/types.yaml#/definitions/uint32
35    description: RX Mailbox number
36
37  brcm,tx:
38    $ref: /schemas/types.yaml#/definitions/uint32
39    description: TX Mailbox number
40
41required:
42  - compatible
43  - reg
44  - interrupts
45  - "#mbox-cells"
46  - brcm,rx
47  - brcm,tx
48
49additionalProperties: false
50
51examples:
52  - |
53    #include <dt-bindings/interrupt-controller/irq.h>
54    #include <dt-bindings/interrupt-controller/arm-gic.h>
55
56    mailbox@a552000 {
57        compatible = "brcm,bcm74110-mbox";
58        reg = <0xa552000 0x1104>;
59        interrupts = <GIC_SPI 0x67 IRQ_TYPE_LEVEL_HIGH>,
60                     <GIC_SPI 0x66 IRQ_TYPE_LEVEL_HIGH>;
61        #mbox-cells = <0x2>;
62        brcm,rx = <0x7>;
63        brcm,tx = <0x6>;
64    };
65