1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/display/bridge/renesas,lvds.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas R-Car LVDS Encoder
8
9maintainers:
10  - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
11
12description: |
13  These DT bindings describe the LVDS encoder embedded in the Renesas R-Car
14  Gen2, R-Car Gen3, RZ/G1 and RZ/G2 SoCs.
15
16properties:
17  compatible:
18    enum:
19      - renesas,r8a7742-lvds # for RZ/G1H compatible LVDS encoders
20      - renesas,r8a7743-lvds # for RZ/G1M compatible LVDS encoders
21      - renesas,r8a7744-lvds # for RZ/G1N compatible LVDS encoders
22      - renesas,r8a774a1-lvds # for RZ/G2M compatible LVDS encoders
23      - renesas,r8a774b1-lvds # for RZ/G2N compatible LVDS encoders
24      - renesas,r8a774c0-lvds # for RZ/G2E compatible LVDS encoders
25      - renesas,r8a774e1-lvds # for RZ/G2H compatible LVDS encoders
26      - renesas,r8a7790-lvds # for R-Car H2 compatible LVDS encoders
27      - renesas,r8a7791-lvds # for R-Car M2-W compatible LVDS encoders
28      - renesas,r8a7793-lvds # for R-Car M2-N compatible LVDS encoders
29      - renesas,r8a7795-lvds # for R-Car H3 compatible LVDS encoders
30      - renesas,r8a7796-lvds # for R-Car M3-W compatible LVDS encoders
31      - renesas,r8a77965-lvds # for R-Car M3-N compatible LVDS encoders
32      - renesas,r8a77970-lvds # for R-Car V3M compatible LVDS encoders
33      - renesas,r8a77980-lvds # for R-Car V3H compatible LVDS encoders
34      - renesas,r8a77990-lvds # for R-Car E3 compatible LVDS encoders
35      - renesas,r8a77995-lvds # for R-Car D3 compatible LVDS encoders
36
37  reg:
38    maxItems: 1
39
40  clocks:
41    minItems: 1
42    maxItems: 4
43
44  clock-names:
45    minItems: 1
46    maxItems: 4
47
48  resets:
49    maxItems: 1
50
51  ports:
52    type: object
53    description: |
54      This device has two video ports. Their connections are modelled using the
55      OF graph bindings specified in Documentation/devicetree/bindings/graph.txt.
56      Each port shall have a single endpoint.
57
58    properties:
59      '#address-cells':
60        const: 1
61
62      '#size-cells':
63        const: 0
64
65      port@0:
66        type: object
67        description: Parallel RGB input port
68
69      port@1:
70        type: object
71        description: LVDS output port
72
73    required:
74      - port@0
75      - port@1
76
77    additionalProperties: false
78
79  power-domains:
80    maxItems: 1
81
82  renesas,companion:
83    $ref: /schemas/types.yaml#/definitions/phandle
84    description:
85      phandle to the companion LVDS encoder. This property is mandatory
86      for the first LVDS encoder on R-Car D3 and E3, and RZ/G2E SoCs, and shall
87      point to the second encoder to be used as a companion in dual-link mode.
88      It shall not be set for any other LVDS encoder.
89
90required:
91  - compatible
92  - reg
93  - clocks
94  - power-domains
95  - resets
96  - ports
97
98if:
99  properties:
100    compatible:
101      enum:
102        - renesas,r8a774c0-lvds
103        - renesas,r8a77990-lvds
104        - renesas,r8a77995-lvds
105then:
106  properties:
107    clocks:
108      minItems: 1
109      maxItems: 4
110      items:
111        - description: Functional clock
112        - description: EXTAL input clock
113        - description: DU_DOTCLKIN0 input clock
114        - description: DU_DOTCLKIN1 input clock
115
116    clock-names:
117      minItems: 1
118      maxItems: 4
119      items:
120        - const: fck
121        # The LVDS encoder can use the EXTAL or DU_DOTCLKINx clocks.
122        # These clocks are optional.
123        - enum:
124            - extal
125            - dclkin.0
126            - dclkin.1
127        - enum:
128            - extal
129            - dclkin.0
130            - dclkin.1
131        - enum:
132            - extal
133            - dclkin.0
134            - dclkin.1
135
136  required:
137    - clock-names
138
139else:
140  properties:
141    clocks:
142      maxItems: 1
143      items:
144        - description: Functional clock
145
146    clock-names:
147      maxItems: 1
148      items:
149        - const: fck
150
151    renesas,companion: false
152
153additionalProperties: false
154
155examples:
156  - |
157    #include <dt-bindings/clock/renesas-cpg-mssr.h>
158    #include <dt-bindings/power/r8a7795-sysc.h>
159
160    lvds@feb90000 {
161        compatible = "renesas,r8a7795-lvds";
162        reg = <0xfeb90000 0x14>;
163        clocks = <&cpg CPG_MOD 727>;
164        power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
165        resets = <&cpg 727>;
166
167        ports {
168            #address-cells = <1>;
169            #size-cells = <0>;
170
171            port@0 {
172                reg = <0>;
173                lvds_in: endpoint {
174                    remote-endpoint = <&du_out_lvds0>;
175                };
176            };
177            port@1 {
178                reg = <1>;
179                lvds_out: endpoint {
180                    remote-endpoint = <&panel_in>;
181                };
182            };
183        };
184    };
185
186  - |
187    #include <dt-bindings/clock/renesas-cpg-mssr.h>
188    #include <dt-bindings/power/r8a77990-sysc.h>
189
190    lvds0: lvds@feb90000 {
191        compatible = "renesas,r8a77990-lvds";
192        reg = <0xfeb90000 0x20>;
193        clocks = <&cpg CPG_MOD 727>,
194                 <&x13_clk>,
195                 <&extal_clk>;
196        clock-names = "fck", "dclkin.0", "extal";
197        power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
198        resets = <&cpg 727>;
199
200        renesas,companion = <&lvds1>;
201
202        ports {
203            #address-cells = <1>;
204            #size-cells = <0>;
205
206            port@0 {
207                reg = <0>;
208                lvds0_in: endpoint {
209                    remote-endpoint = <&du_out_lvds0>;
210                };
211            };
212            port@1 {
213                reg = <1>;
214                lvds0_out: endpoint {
215                    remote-endpoint = <&panel_in1>;
216                };
217            };
218        };
219    };
220
221    lvds1: lvds@feb90100 {
222        compatible = "renesas,r8a77990-lvds";
223        reg = <0xfeb90100 0x20>;
224        clocks = <&cpg CPG_MOD 727>,
225                 <&x13_clk>,
226                 <&extal_clk>;
227        clock-names = "fck", "dclkin.0", "extal";
228        power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
229        resets = <&cpg 726>;
230
231        ports {
232            #address-cells = <1>;
233            #size-cells = <0>;
234
235            port@0 {
236                reg = <0>;
237                lvds1_in: endpoint {
238                    remote-endpoint = <&du_out_lvds1>;
239                };
240            };
241            port@1 {
242                reg = <1>;
243                lvds1_out: endpoint {
244                    remote-endpoint = <&panel_in2>;
245                };
246            };
247        };
248    };
249
250...
251