xref: /linux/Documentation/devicetree/bindings/bus/allwinner,sun50i-a64-de2.yaml (revision fd7d598270724cc787982ea48bbe17ad383a8b7f) 
1# SPDX-License-Identifier: GPL-2.0
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/bus/allwinner,sun50i-a64-de2.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Allwinner A64 Display Engine Bus
8
9maintainers:
10  - Chen-Yu Tsai <wens@csie.org>
11  - Maxime Ripard <mripard@kernel.org>
12
13properties:
14  $nodename:
15    pattern: "^bus(@[0-9a-f]+)?$"
16
17  "#address-cells":
18    const: 1
19
20  "#size-cells":
21    const: 1
22
23  compatible:
24    oneOf:
25      - const: allwinner,sun50i-a64-de2
26      - items:
27          - const: allwinner,sun50i-h6-de3
28          - const: allwinner,sun50i-a64-de2
29
30  reg:
31    maxItems: 1
32
33  allwinner,sram:
34    description:
35      The SRAM that needs to be claimed to access the display engine
36      bus.
37    $ref: /schemas/types.yaml#/definitions/phandle-array
38    items:
39      - items:
40          - description: phandle to SRAM
41          - description: register value for device
42
43  ranges: true
44
45patternProperties:
46  # All other properties should be child nodes with unit-address and 'reg'
47  "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-fA-F]+$":
48    type: object
49    additionalProperties: true
50    properties:
51      reg:
52        maxItems: 1
53
54    required:
55      - reg
56
57required:
58  - compatible
59  - reg
60  - "#address-cells"
61  - "#size-cells"
62  - ranges
63  - allwinner,sram
64
65additionalProperties: false
66
67examples:
68  - |
69    bus@1000000 {
70        compatible = "allwinner,sun50i-a64-de2";
71        reg = <0x1000000 0x400000>;
72        allwinner,sram = <&de2_sram 1>;
73        #address-cells = <1>;
74        #size-cells = <1>;
75        ranges = <0 0x1000000 0x400000>;
76
77        display_clocks: clock@0 {
78            compatible = "allwinner,sun50i-a64-de2-clk";
79            reg = <0x0 0x100000>;
80            clocks = <&ccu 52>, <&ccu 99>;
81            clock-names = "bus", "mod";
82            resets = <&ccu 30>;
83            #clock-cells = <1>;
84            #reset-cells = <1>;
85        };
86    };
87
88...
89