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1 | # SPDX-License-Identifier: GPL-2.0 |
2 | %YAML 1.2 | |
3 | --- | |
575af8ec | 4 | $id: http://devicetree.org/schemas/display/bridge/lvds-codec.yaml# |
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5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
6 | ||
575af8ec | 7 | title: Transparent LVDS encoders and decoders |
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8 | |
9 | maintainers: | |
10 | - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | |
11 | ||
12 | description: | | |
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13 | This binding supports transparent LVDS encoders and decoders that don't |
14 | require any configuration. | |
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15 | |
16 | LVDS is a physical layer specification defined in ANSI/TIA/EIA-644-A. Multiple | |
17 | incompatible data link layers have been used over time to transmit image data | |
18 | to LVDS panels. This binding targets devices compatible with the following | |
19 | specifications only. | |
20 | ||
21 | [JEIDA] "Digital Interface Standards for Monitor", JEIDA-59-1999, February | |
22 | 1999 (Version 1.0), Japan Electronic Industry Development Association (JEIDA) | |
23 | [LDI] "Open LVDS Display Interface", May 1999 (Version 0.95), National | |
24 | Semiconductor | |
25 | [VESA] "VESA Notebook Panel Standard", October 2007 (Version 1.0), Video | |
26 | Electronics Standards Association (VESA) | |
27 | ||
28 | Those devices have been marketed under the FPD-Link and FlatLink brand names | |
29 | among others. | |
30 | ||
31 | properties: | |
32 | compatible: | |
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33 | oneOf: |
34 | - items: | |
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35 | - enum: |
36 | - ti,ds90c185 # For the TI DS90C185 FPD-Link Serializer | |
37 | - ti,ds90c187 # For the TI DS90C187 FPD-Link Serializer | |
38 | - ti,sn75lvds83 # For the TI SN75LVDS83 FlatLink transmitter | |
39 | - const: lvds-encoder # Generic LVDS encoder compatible fallback | |
b7de4ba7 | 40 | - items: |
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41 | - enum: |
42 | - ti,ds90cf384a # For the DS90CF384A FPD-Link LVDS Receiver | |
43 | - const: lvds-decoder # Generic LVDS decoders compatible fallback | |
cad8c44a | 44 | - enum: |
9f60a65b | 45 | - thine,thc63lvdm83d # For the THC63LVDM83D LVDS serializer |
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46 | |
47 | ports: | |
b6755423 | 48 | $ref: /schemas/graph.yaml#/properties/ports |
82e0e5fe | 49 | |
b6755423 | 50 | properties: |
a7738c08 | 51 | port@0: |
ba3e8678 | 52 | $ref: /schemas/graph.yaml#/$defs/port-base |
a7738c08 | 53 | description: | |
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54 | For LVDS encoders, port 0 is the parallel input |
55 | For LVDS decoders, port 0 is the LVDS input | |
a7738c08 | 56 | |
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57 | properties: |
58 | endpoint: | |
59 | $ref: /schemas/media/video-interfaces.yaml# | |
60 | unevaluatedProperties: false | |
61 | ||
62 | properties: | |
63 | data-mapping: | |
64 | enum: | |
65 | - jeida-18 | |
66 | - jeida-24 | |
67 | - vesa-24 | |
68 | description: | | |
69 | The color signals mapping order. See details in | |
70 | Documentation/devicetree/bindings/display/panel/lvds.yaml | |
71 | ||
a7738c08 | 72 | port@1: |
b6755423 | 73 | $ref: /schemas/graph.yaml#/properties/port |
a7738c08 | 74 | description: | |
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75 | For LVDS encoders, port 1 is the LVDS output |
76 | For LVDS decoders, port 1 is the parallel output | |
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77 | |
78 | required: | |
79 | - port@0 | |
80 | - port@1 | |
81 | ||
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82 | powerdown-gpios: |
83 | description: | |
84 | The GPIO used to control the power down line of this device. | |
85 | maxItems: 1 | |
86 | ||
9bfaf9c7 | 87 | power-supply: true |
2cd9df2b | 88 | |
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89 | if: |
90 | not: | |
91 | properties: | |
92 | compatible: | |
93 | contains: | |
94 | const: lvds-decoder | |
95 | then: | |
96 | properties: | |
97 | ports: | |
98 | properties: | |
99 | port@0: | |
100 | properties: | |
101 | endpoint: | |
102 | properties: | |
103 | data-mapping: false | |
104 | ||
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105 | required: |
106 | - compatible | |
107 | - ports | |
108 | ||
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109 | additionalProperties: false |
110 | ||
111 | ||
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112 | examples: |
113 | - | | |
114 | lvds-encoder { | |
5240272d | 115 | compatible = "ti,ds90c185", "lvds-encoder"; |
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116 | |
117 | ports { | |
118 | #address-cells = <1>; | |
119 | #size-cells = <0>; | |
120 | ||
121 | port@0 { | |
122 | reg = <0>; | |
123 | ||
124 | lvds_enc_in: endpoint { | |
125 | remote-endpoint = <&display_out_rgb>; | |
126 | }; | |
127 | }; | |
128 | ||
129 | port@1 { | |
130 | reg = <1>; | |
131 | ||
132 | lvds_enc_out: endpoint { | |
133 | remote-endpoint = <&lvds_panel_in>; | |
134 | }; | |
135 | }; | |
136 | }; | |
137 | }; | |
138 | ||
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139 | - | |
140 | lvds-decoder { | |
b7de4ba7 | 141 | compatible = "ti,ds90cf384a", "lvds-decoder"; |
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142 | |
143 | ports { | |
144 | #address-cells = <1>; | |
145 | #size-cells = <0>; | |
146 | ||
147 | port@0 { | |
148 | reg = <0>; | |
149 | ||
150 | lvds_dec_in: endpoint { | |
151 | remote-endpoint = <&display_out_lvds>; | |
152 | }; | |
153 | }; | |
154 | ||
155 | port@1 { | |
156 | reg = <1>; | |
157 | ||
158 | lvds_dec_out: endpoint { | |
159 | remote-endpoint = <&rgb_panel_in>; | |
160 | }; | |
161 | }; | |
162 | }; | |
163 | }; | |
164 | ||
a7738c08 | 165 | ... |