xref: /linux/Documentation/devicetree/bindings/display/arm,komeda.yaml (revision 4f2c0a4acffbec01079c28f839422e64ddeff004) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/arm,komeda.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Arm Komeda display processor
8
9maintainers:
10  - Liviu Dudau <Liviu.Dudau@arm.com>
11  - Andre Przywara <andre.przywara@arm.com>
12
13description:
14  The Arm Mali D71 display processor supports up to two displays with up
15  to a 4K resolution each. Each pipeline can be composed of up to four
16  layers. It is typically connected to a digital display connector like HDMI.
17
18properties:
19  compatible:
20    oneOf:
21      - items:
22          - const: arm,mali-d32
23          - const: arm,mali-d71
24      - const: arm,mali-d71
25
26  reg:
27    maxItems: 1
28
29  interrupts:
30    maxItems: 1
31
32  clock-names:
33    const: aclk
34
35  clocks:
36    maxItems: 1
37    description: The main DPU processor clock
38
39  "#address-cells":
40    const: 1
41
42  "#size-cells":
43    const: 0
44
45  memory-region:
46    maxItems: 1
47    description:
48      Phandle to a node describing memory to be used for the framebuffer.
49      If not present, the framebuffer may be located anywhere in memory.
50
51  iommus:
52    description:
53      The stream IDs for each of the used pipelines, each four IDs for the
54      four layers, plus one for the write-back stream.
55    minItems: 5
56    maxItems: 10
57
58patternProperties:
59  '^pipeline@[01]$':
60    type: object
61    additionalProperties: false
62    description:
63      clocks
64
65    properties:
66      reg:
67        enum: [ 0, 1 ]
68
69      clock-names:
70        const: pxclk
71
72      clocks:
73        maxItems: 1
74        description: The input reference for the pixel clock.
75
76      port:
77        $ref: /schemas/graph.yaml#/$defs/port-base
78        unevaluatedProperties: false
79
80additionalProperties: false
81
82required:
83  - "#address-cells"
84  - "#size-cells"
85  - compatible
86  - reg
87  - interrupts
88  - clock-names
89  - clocks
90  - pipeline@0
91
92examples:
93  - |
94    display@c00000 {
95        #address-cells = <1>;
96        #size-cells = <0>;
97        compatible = "arm,mali-d71";
98        reg = <0xc00000 0x20000>;
99        interrupts = <168>;
100        clocks = <&dpu_aclk>;
101        clock-names = "aclk";
102        iommus = <&smmu 0>, <&smmu 1>, <&smmu 2>, <&smmu 3>,
103                 <&smmu 8>,
104                 <&smmu 4>, <&smmu 5>, <&smmu 6>, <&smmu 7>,
105                 <&smmu 9>;
106
107        dp0_pipe0: pipeline@0 {
108            clocks = <&fpgaosc2>;
109            clock-names = "pxclk";
110            reg = <0>;
111
112            port {
113                dp0_pipe0_out: endpoint {
114                    remote-endpoint = <&db_dvi0_in>;
115                };
116            };
117        };
118
119        dp0_pipe1: pipeline@1 {
120            clocks = <&fpgaosc2>;
121            clock-names = "pxclk";
122            reg = <1>;
123
124            port {
125                dp0_pipe1_out: endpoint {
126                    remote-endpoint = <&db_dvi1_in>;
127                };
128            };
129        };
130    };
131...
132