xref: /linux/Documentation/devicetree/bindings/bus/brcm,gisb-arb.yaml (revision 4b660dbd9ee2059850fd30e0df420ca7a38a1856) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/bus/brcm,gisb-arb.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Broadcom GISB bus Arbiter controller
8
9maintainers:
10  - Florian Fainelli <f.fainelli@gmail.com>
11
12properties:
13  compatible:
14    oneOf:
15      - items:
16          - enum:
17              - brcm,bcm7445-gisb-arb  # for other 28nm chips
18          - const: brcm,gisb-arb
19      - items:
20          - enum:
21              - brcm,bcm74165-gisb-arb  # for V7 new style 16nm chips
22              - brcm,bcm7278-gisb-arb  # for V7 28nm chips
23              - brcm,bcm7435-gisb-arb  # for newer 40nm chips
24              - brcm,bcm7400-gisb-arb  # for older 40nm chips and all 65nm chips
25              - brcm,bcm7038-gisb-arb  # for 130nm chips
26              - brcm,gisb-arb          # fallback compatible
27
28  reg:
29    maxItems: 1
30
31  interrupts:
32    minItems: 2
33    items:
34      - description: timeout interrupt line
35      - description: target abort interrupt line
36      - description: breakpoint interrupt line
37
38  brcm,gisb-arb-master-mask:
39    $ref: /schemas/types.yaml#/definitions/uint32
40    description: >
41      32-bits wide bitmask used to specify which GISB masters are valid at the
42      system level
43
44  brcm,gisb-arb-master-names:
45    $ref: /schemas/types.yaml#/definitions/string-array
46    description: >
47      String list of the literal name of the GISB masters. Should match the
48      number of bits set in brcm,gisb-master-mask and the order in which they
49      appear from MSB to LSB.
50
51required:
52  - compatible
53  - reg
54  - interrupts
55
56additionalProperties: false
57
58examples:
59  - |
60    gisb-arb@f0400000 {
61      compatible = "brcm,gisb-arb";
62      reg = <0xf0400000 0x800>;
63      interrupts = <0>, <2>;
64      interrupt-parent = <&sun_l2_intc>;
65      brcm,gisb-arb-master-mask = <0x7>;
66      brcm,gisb-arb-master-names = "bsp_0", "scpu_0", "cpu_0";
67    };
68