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
7 title: Renesas R-Car LVDS Encoder
8
9 maintainers:
10 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
11
12 description: |
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
16 properties:
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,r8a77961-lvds # for R-Car M3-W+ compatible LVDS encoders
32 - renesas,r8a77965-lvds # for R-Car M3-N compatible LVDS encoders
33 - renesas,r8a77970-lvds # for R-Car V3M compatible LVDS encoders
34 - renesas,r8a77980-lvds # for R-Car V3H compatible LVDS encoders
35 - renesas,r8a77990-lvds # for R-Car E3 compatible LVDS encoders
36 - renesas,r8a77995-lvds # for R-Car D3 compatible LVDS encoders
37
38 reg:
39 maxItems: 1
40
41 clocks:
42 minItems: 1
43 maxItems: 4
44
45 clock-names:
46 minItems: 1
47 maxItems: 4
48
49 resets:
50 maxItems: 1
51
52 ports:
53 $ref: /schemas/graph.yaml#/properties/ports
54
55 properties:
56 port@0:
57 $ref: /schemas/graph.yaml#/properties/port
58 description: Parallel RGB input port
59
60 port@1:
61 $ref: /schemas/graph.yaml#/properties/port
62 description: LVDS output port
63
64 required:
65 - port@0
66 - port@1
67
68 power-domains:
69 maxItems: 1
70
71 renesas,companion:
72 $ref: /schemas/types.yaml#/definitions/phandle
73 description:
74 phandle to the companion LVDS encoder. This property is mandatory
75 for the first LVDS encoder on R-Car D3 and E3, and RZ/G2E SoCs, and shall
76 point to the second encoder to be used as a companion in dual-link mode.
77 It shall not be set for any other LVDS encoder.
78
79 required:
80 - compatible
81 - reg
82 - clocks
83 - power-domains
84 - resets
85 - ports
86
87 if:
88 properties:
89 compatible:
90 enum:
91 - renesas,r8a774c0-lvds
92 - renesas,r8a77990-lvds
93 - renesas,r8a77995-lvds
94 then:
95 properties:
96 clocks:
97 minItems: 1
98 items:
99 - description: Functional clock
100 - description: EXTAL input clock
101 - description: DU_DOTCLKIN0 input clock
102 - description: DU_DOTCLKIN1 input clock
103
104 clock-names:
105 minItems: 1
106 items:
107 - const: fck
108 # The LVDS encoder can use the EXTAL or DU_DOTCLKINx clocks.
109 # These clocks are optional.
110 - enum:
111 - extal
112 - dclkin.0
113 - dclkin.1
114 - enum:
115 - extal
116 - dclkin.0
117 - dclkin.1
118 - enum:
119 - extal
120 - dclkin.0
121 - dclkin.1
122
123 required:
124 - clock-names
125
126 else:
127 properties:
128 clocks:
129 items:
130 - description: Functional clock
131
132 clock-names:
133 items:
134 - const: fck
135
136 renesas,companion: false
137
138 additionalProperties: false
139
140 examples:
141 - |
142 #include <dt-bindings/clock/renesas-cpg-mssr.h>
143 #include <dt-bindings/power/r8a7795-sysc.h>
144
145 lvds@feb90000 {
146 compatible = "renesas,r8a7795-lvds";
147 reg = <0xfeb90000 0x14>;
148 clocks = <&cpg CPG_MOD 727>;
149 power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
150 resets = <&cpg 727>;
151
152 ports {
153 #address-cells = <1>;
154 #size-cells = <0>;
155
156 port@0 {
157 reg = <0>;
158 lvds_in: endpoint {
159 remote-endpoint = <&du_out_lvds0>;
160 };
161 };
162 port@1 {
163 reg = <1>;
164 lvds_out: endpoint {
165 remote-endpoint = <&panel_in>;
166 };
167 };
168 };
169 };
170
171 - |
172 #include <dt-bindings/clock/renesas-cpg-mssr.h>
173 #include <dt-bindings/power/r8a77990-sysc.h>
174
175 lvds0: lvds@feb90000 {
176 compatible = "renesas,r8a77990-lvds";
177 reg = <0xfeb90000 0x20>;
178 clocks = <&cpg CPG_MOD 727>,
179 <&x13_clk>,
180 <&extal_clk>;
181 clock-names = "fck", "dclkin.0", "extal";
182 power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
183 resets = <&cpg 727>;
184
185 renesas,companion = <&lvds1>;
186
187 ports {
188 #address-cells = <1>;
189 #size-cells = <0>;
190
191 port@0 {
192 reg = <0>;
193 lvds0_in: endpoint {
194 remote-endpoint = <&du_out_lvds0>;
195 };
196 };
197 port@1 {
198 reg = <1>;
199 lvds0_out: endpoint {
200 remote-endpoint = <&panel_in1>;
201 };
202 };
203 };
204 };
205
206 lvds1: lvds@feb90100 {
207 compatible = "renesas,r8a77990-lvds";
208 reg = <0xfeb90100 0x20>;
209 clocks = <&cpg CPG_MOD 727>,
210 <&x13_clk>,
211 <&extal_clk>;
212 clock-names = "fck", "dclkin.0", "extal";
213 power-domains = <&sysc R8A77990_PD_ALWAYS_ON>;
214 resets = <&cpg 726>;
215
216 ports {
217 #address-cells = <1>;
218 #size-cells = <0>;
219
220 port@0 {
221 reg = <0>;
222 lvds1_in: endpoint {
223 remote-endpoint = <&du_out_lvds1>;
224 };
225 };
226 port@1 {
227 reg = <1>;
228 lvds1_out: endpoint {
229 remote-endpoint = <&panel_in2>;
230 };
231 };
232 };
233 };
234
235 ...
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.