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
7 title: Allwinner A64 Display Engine Bus
8
9 maintainers:
10 - Chen-Yu Tsai <wens@csie.org>
11 - Maxime Ripard <mripard@kernel.org>
12
13 properties:
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 $ref: /schemas/types.yaml#/definitions/phandle-array
38 items:
39 - items:
40 - description: phandle to SRAM
41 - description: register value for device
42
43 ranges: true
44
45 patternProperties:
46 # All other properties should be child nodes with unit-address and 'reg'
47 "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-fA-F]+$":
48 type: object
49 additionalProperties: true
50 properties:
51 reg:
52 maxItems: 1
53
54 required:
55 - reg
56
57 required:
58 - compatible
59 - reg
60 - "#address-cells"
61 - "#size-cells"
62 - ranges
63 - allwinner,sram
64
65 additionalProperties: false
66
67 examples:
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 ...
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