xref: /linux/Documentation/devicetree/bindings/display/bridge/cdns,mhdp8546.yaml (revision 1ac731c529cd4d6adbce134754b51ff7d822b145) 
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
7title: Cadence MHDP8546 bridge
8
9maintainers:
10  - Swapnil Jakhade <sjakhade@cadence.com>
11  - Yuti Amonkar <yamonkar@cadence.com>
12
13properties:
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
93allOf:
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
116required:
117  - compatible
118  - clocks
119  - reg
120  - reg-names
121  - phys
122  - phy-names
123  - interrupts
124  - ports
125
126additionalProperties: false
127
128examples:
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...
165