1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/display/bridge/cdns,mhdp8546.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Cadence MHDP8546 bridge
8
9 maintainers:
10 - Swapnil Jakhade <sjakhade@cadence.com>
11 - Yuti Amonkar <yamonkar@cadence.com>
12
13 properties:
14 compatible:
15 enum:
16 - cdns,mhdp8546
17 - ti,j721e-mhdp8546
18
19 reg:
20 minItems: 1
21 items:
22 - description:
23 Register block of mhdptx apb registers up to PHY mapped area (AUX_CONFIG_P).
24 The AUX and PMA registers are not part of this range, they are instead
25 included in the associated PHY.
26 - description:
27 Register block for DSS_EDP0_INTG_CFG_VP registers in case of TI J7 SoCs.
28 - description:
29 Register block of mhdptx sapb registers.
30
31 reg-names:
32 minItems: 1
33 items:
34 - const: mhdptx
35 - const: j721e-intg
36 - const: mhdptx-sapb
37
38 clocks:
39 maxItems: 1
40 description:
41 DP bridge clock, used by the IP to know how to translate a number of
42 clock cycles into a time (which is used to comply with DP standard timings
43 and delays).
44
45 phys:
46 maxItems: 1
47 description:
48 phandle to the DisplayPort PHY.
49
50 phy-names:
51 items:
52 - const: dpphy
53
54 power-domains:
55 maxItems: 1
56
57 interrupts:
58 maxItems: 1
59
60 ports:
61 $ref: /schemas/graph.yaml#/properties/ports
62
63 properties:
64 port@0:
65 $ref: /schemas/graph.yaml#/properties/port
66 description:
67 First input port representing the DP bridge input.
68
69 port@1:
70 $ref: /schemas/graph.yaml#/properties/port
71 description:
72 Second input port representing the DP bridge input.
73
74 port@2:
75 $ref: /schemas/graph.yaml#/properties/port
76 description:
77 Third input port representing the DP bridge input.
78
79 port@3:
80 $ref: /schemas/graph.yaml#/properties/port
81 description:
82 Fourth input port representing the DP bridge input.
83
84 port@4:
85 $ref: /schemas/graph.yaml#/properties/port
86 description:
87 Output port representing the DP bridge output.
88
89 required:
90 - port@0
91 - port@4
92
93 allOf:
94 - if:
95 properties:
96 compatible:
97 contains:
98 const: ti,j721e-mhdp8546
99 then:
100 properties:
101 reg:
102 minItems: 2
103 maxItems: 3
104 reg-names:
105 minItems: 2
106 maxItems: 3
107 else:
108 properties:
109 reg:
110 minItems: 1
111 maxItems: 2
112 reg-names:
113 minItems: 1
114 maxItems: 2
115
116 required:
117 - compatible
118 - clocks
119 - reg
120 - reg-names
121 - phys
122 - phy-names
123 - interrupts
124 - ports
125
126 additionalProperties: false
127
128 examples:
129 - |
130 #include <dt-bindings/interrupt-controller/arm-gic.h>
131 bus {
132 #address-cells = <2>;
133 #size-cells = <2>;
134
135 mhdp: dp-bridge@f0fb000000 {
136 compatible = "cdns,mhdp8546";
137 reg = <0xf0 0xfb000000 0x0 0x1000000>;
138 reg-names = "mhdptx";
139 clocks = <&mhdp_clock>;
140 phys = <&dp_phy>;
141 phy-names = "dpphy";
142 interrupts = <GIC_SPI 614 IRQ_TYPE_LEVEL_HIGH>;
143
144 ports {
145 #address-cells = <1>;
146 #size-cells = <0>;
147
148 port@0 {
149 reg = <0>;
150 dp_bridge_input: endpoint {
151 remote-endpoint = <&xxx_dpi_output>;
152 };
153 };
154
155 port@4 {
156 reg = <4>;
157 dp_bridge_output: endpoint {
158 remote-endpoint = <&xxx_dp_connector_input>;
159 };
160 };
161 };
162 };
163 };
164 ...
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