xref: /linux/Documentation/devicetree/bindings/bus/allwinner,sun50i-a64-de2.yaml (revision d69c6ddd019f31081cc0232fa8ad8ea1cabdf22c) 
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 Device Tree Bindings
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    $ref: /schemas/types.yaml#/definitions/phandle-array
38    maxItems: 1
39
40  ranges: true
41
42patternProperties:
43  # All other properties should be child nodes with unit-address and 'reg'
44  "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-fA-F]+$":
45    type: object
46    properties:
47      reg:
48        maxItems: 1
49
50    required:
51      - reg
52
53required:
54  - compatible
55  - reg
56  - "#address-cells"
57  - "#size-cells"
58  - ranges
59  - allwinner,sram
60
61additionalProperties: false
62
63examples:
64  - |
65    bus@1000000 {
66        compatible = "allwinner,sun50i-a64-de2";
67        reg = <0x1000000 0x400000>;
68        allwinner,sram = <&de2_sram 1>;
69        #address-cells = <1>;
70        #size-cells = <1>;
71        ranges = <0 0x1000000 0x400000>;
72
73        display_clocks: clock@0 {
74            compatible = "allwinner,sun50i-a64-de2-clk";
75            reg = <0x0 0x100000>;
76            clocks = <&ccu 52>, <&ccu 99>;
77            clock-names = "bus", "mod";
78            resets = <&ccu 30>;
79            #clock-cells = <1>;
80            #reset-cells = <1>;
81        };
82    };
83
84...
85