xref: /linux/Documentation/devicetree/bindings/bus/allwinner,sun50i-a64-de2.yaml (revision c95baf12f5077419db01313ab61c2aac007d40cd) 
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    allOf:
35      - $ref: /schemas/types.yaml#definitions/phandle-array
36      - maxItems: 1
37    description:
38      The SRAM that needs to be claimed to access the display engine
39      bus.
40
41  ranges: true
42
43patternProperties:
44  # All other properties should be child nodes with unit-address and 'reg'
45  "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-fA-F]+$":
46    type: object
47    properties:
48      reg:
49        maxItems: 1
50
51    required:
52      - reg
53
54required:
55  - compatible
56  - reg
57  - "#address-cells"
58  - "#size-cells"
59  - ranges
60  - allwinner,sram
61
62additionalProperties: false
63
64examples:
65  - |
66    bus@1000000 {
67        compatible = "allwinner,sun50i-a64-de2";
68        reg = <0x1000000 0x400000>;
69        allwinner,sram = <&de2_sram 1>;
70        #address-cells = <1>;
71        #size-cells = <1>;
72        ranges = <0 0x1000000 0x400000>;
73
74        display_clocks: clock@0 {
75            compatible = "allwinner,sun50i-a64-de2-clk";
76            reg = <0x0 0x100000>;
77            clocks = <&ccu 52>, <&ccu 99>;
78            clock-names = "bus", "mod";
79            resets = <&ccu 30>;
80            #clock-cells = <1>;
81            #reset-cells = <1>;
82        };
83    };
84
85...
86