xref: /linux/Documentation/devicetree/bindings/bus/palmbus.yaml (revision da1d9caf95def6f0320819cf941c9fd1069ba9e1) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/bus/palmbus.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Ralink PalmBus Device Tree Bindings
8
9maintainers:
10  - Sergio Paracuellos <sergio.paracuellos@gmail.com>
11
12description: |
13  The ralink palmbus controller can be found in all ralink MIPS
14  SoCs. It provides an external bus for connecting multiple
15  external devices to the SoC.
16
17properties:
18  $nodename:
19    pattern: "^palmbus(@[0-9a-f]+)?$"
20
21  "#address-cells":
22    const: 1
23
24  "#size-cells":
25    const: 1
26
27  compatible:
28    const: palmbus
29
30  reg:
31    maxItems: 1
32
33  ranges: true
34
35patternProperties:
36  # All other properties should be child nodes with unit-address and 'reg'
37  "@[0-9a-f]+$":
38    type: object
39    properties:
40      reg:
41        maxItems: 1
42
43    required:
44      - reg
45
46required:
47  - compatible
48  - reg
49  - "#address-cells"
50  - "#size-cells"
51  - ranges
52
53additionalProperties: false
54
55examples:
56  - |
57    #include <dt-bindings/interrupt-controller/mips-gic.h>
58    #include <dt-bindings/interrupt-controller/irq.h>
59    palmbus@1e000000 {
60        compatible = "palmbus";
61        reg = <0x1e000000 0x100000>;
62        #address-cells = <1>;
63        #size-cells = <1>;
64        ranges = <0x0 0x1e000000 0x0fffff>;
65
66        gpio@600 {
67            #gpio-cells = <2>;
68            #interrupt-cells = <2>;
69            compatible = "mediatek,mt7621-gpio";
70            gpio-controller;
71            gpio-ranges = <&pinctrl 0 0 95>;
72            interrupt-controller;
73            reg = <0x600 0x100>;
74            interrupt-parent = <&gic>;
75            interrupts = <GIC_SHARED 12 IRQ_TYPE_LEVEL_HIGH>;
76        };
77    };
78
79...
80