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    $ref: /schemas/types.yaml#/definitions/phandle-array
38    items:
39      - items:
40          - description: phandle to SRAM
41          - description: register value for device
42
43  ranges: true
44
45patternProperties:
46  # All other properties should be child nodes with unit-address and 'reg'
47  "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-fA-F]+$":
48    type: object
49    properties:
50      reg:
51        maxItems: 1
52
53    required:
54      - reg
55
56required:
57  - compatible
58  - reg
59  - "#address-cells"
60  - "#size-cells"
61  - ranges
62  - allwinner,sram
63
64additionalProperties: false
65
66examples:
67  - |
68    bus@1000000 {
69        compatible = "allwinner,sun50i-a64-de2";
70        reg = <0x1000000 0x400000>;
71        allwinner,sram = <&de2_sram 1>;
72        #address-cells = <1>;
73        #size-cells = <1>;
74        ranges = <0 0x1000000 0x400000>;
75
76        display_clocks: clock@0 {
77            compatible = "allwinner,sun50i-a64-de2-clk";
78            reg = <0x0 0x100000>;
79            clocks = <&ccu 52>, <&ccu 99>;
80            clock-names = "bus", "mod";
81            resets = <&ccu 30>;
82            #clock-cells = <1>;
83            #reset-cells = <1>;
84        };
85    };
86
87...
88