1 # SPDX-License-Identifier: GPL-2.0 1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/display/bri 4 $id: http://devicetree.org/schemas/display/bridge/lvds-codec.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Transparent LVDS encoders and decoders 7 title: Transparent LVDS encoders and decoders
8 8
9 maintainers: 9 maintainers:
10 - Laurent Pinchart <laurent.pinchart+renesas@ 10 - Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
11 11
12 description: | 12 description: |
13 This binding supports transparent LVDS encod 13 This binding supports transparent LVDS encoders and decoders that don't
14 require any configuration. 14 require any configuration.
15 15
16 LVDS is a physical layer specification defin 16 LVDS is a physical layer specification defined in ANSI/TIA/EIA-644-A. Multiple
17 incompatible data link layers have been used 17 incompatible data link layers have been used over time to transmit image data
18 to LVDS panels. This binding targets devices 18 to LVDS panels. This binding targets devices compatible with the following
19 specifications only. 19 specifications only.
20 20
21 [JEIDA] "Digital Interface Standards for Mon 21 [JEIDA] "Digital Interface Standards for Monitor", JEIDA-59-1999, February
22 1999 (Version 1.0), Japan Electronic Industr 22 1999 (Version 1.0), Japan Electronic Industry Development Association (JEIDA)
23 [LDI] "Open LVDS Display Interface", May 199 23 [LDI] "Open LVDS Display Interface", May 1999 (Version 0.95), National
24 Semiconductor 24 Semiconductor
25 [VESA] "VESA Notebook Panel Standard", Octob 25 [VESA] "VESA Notebook Panel Standard", October 2007 (Version 1.0), Video
26 Electronics Standards Association (VESA) 26 Electronics Standards Association (VESA)
27 27
28 Those devices have been marketed under the F 28 Those devices have been marketed under the FPD-Link and FlatLink brand names
29 among others. 29 among others.
30 30
31 properties: 31 properties:
32 compatible: 32 compatible:
33 oneOf: 33 oneOf:
34 - items: 34 - items:
35 - enum: !! 35 - enum:
36 - ti,ds90c185 # For the TI DS9 !! 36 - ti,ds90c185 # For the TI DS90C185 FPD-Link Serializer
37 - ti,ds90c187 # For the TI DS9 !! 37 - ti,ds90c187 # For the TI DS90C187 FPD-Link Serializer
38 - ti,sn75lvds83 # For the TI SN7 !! 38 - ti,sn75lvds83 # For the TI SN75LVDS83 FlatLink transmitter
39 - const: lvds-encoder # Generic LVDS !! 39 - const: lvds-encoder # Generic LVDS encoder compatible fallback
40 - items: 40 - items:
41 - enum: !! 41 - enum:
42 - ti,ds90cf364a # For the DS90CF !! 42 - ti,ds90cf384a # For the DS90CF384A FPD-Link LVDS Receiver
43 - ti,ds90cf384a # For the DS90CF !! 43 - const: lvds-decoder # Generic LVDS decoders compatible fallback
44 - ti,sn65lvds94 # For the SN65DS <<
45 - const: lvds-decoder # Generic LVDS <<
46 - enum: 44 - enum:
47 - thine,thc63lvdm83d # For the THC63 !! 45 - thine,thc63lvdm83d # For the THC63LVDM83D LVDS serializer
48 46
49 ports: 47 ports:
50 $ref: /schemas/graph.yaml#/properties/port !! 48 type: object
51 !! 49 description: |
>> 50 This device has two video ports. Their connections are modeled using the
>> 51 OF graph bindings specified in Documentation/devicetree/bindings/graph.txt
52 properties: 52 properties:
53 port@0: 53 port@0:
54 $ref: /schemas/graph.yaml#/$defs/port- !! 54 type: object
55 unevaluatedProperties: false <<
56 description: | 55 description: |
57 For LVDS encoders, port 0 is the par 56 For LVDS encoders, port 0 is the parallel input
58 For LVDS decoders, port 0 is the LVD 57 For LVDS decoders, port 0 is the LVDS input
59 58
60 properties: <<
61 endpoint: <<
62 $ref: /schemas/media/video-interfa <<
63 unevaluatedProperties: false <<
64 <<
65 properties: <<
66 data-mapping: <<
67 enum: <<
68 - jeida-18 <<
69 - jeida-24 <<
70 - vesa-24 <<
71 description: | <<
72 The color signals mapping or <<
73 Documentation/devicetree/bin <<
74 <<
75 port@1: 59 port@1:
76 $ref: /schemas/graph.yaml#/properties/ !! 60 type: object
77 description: | 61 description: |
78 For LVDS encoders, port 1 is the LVD 62 For LVDS encoders, port 1 is the LVDS output
79 For LVDS decoders, port 1 is the par 63 For LVDS decoders, port 1 is the parallel output
80 64
81 required: 65 required:
82 - port@0 66 - port@0
83 - port@1 67 - port@1
84 68
85 pclk-sample: <<
86 description: <<
87 Data sampling on rising or falling edge. <<
88 enum: <<
89 - 0 # Falling edge <<
90 - 1 # Rising edge <<
91 default: 0 <<
92 <<
93 powerdown-gpios: 69 powerdown-gpios:
94 description: 70 description:
95 The GPIO used to control the power down 71 The GPIO used to control the power down line of this device.
96 maxItems: 1 72 maxItems: 1
97 73
98 power-supply: true <<
99 <<
100 allOf: <<
101 - if: <<
102 not: <<
103 properties: <<
104 compatible: <<
105 contains: <<
106 const: lvds-decoder <<
107 then: <<
108 properties: <<
109 ports: <<
110 properties: <<
111 port@0: <<
112 properties: <<
113 endpoint: <<
114 properties: <<
115 data-mapping: false <<
116 <<
117 - if: <<
118 not: <<
119 properties: <<
120 compatible: <<
121 contains: <<
122 const: lvds-encoder <<
123 then: <<
124 properties: <<
125 pclk-sample: false <<
126 <<
127 required: 74 required:
128 - compatible 75 - compatible
129 - ports 76 - ports
130 <<
131 additionalProperties: false <<
132 <<
133 77
134 examples: 78 examples:
135 - | 79 - |
136 lvds-encoder { 80 lvds-encoder {
137 compatible = "ti,ds90c185", "lvds-encode 81 compatible = "ti,ds90c185", "lvds-encoder";
138 82
139 ports { 83 ports {
140 #address-cells = <1>; 84 #address-cells = <1>;
141 #size-cells = <0>; 85 #size-cells = <0>;
142 86
143 port@0 { 87 port@0 {
144 reg = <0>; 88 reg = <0>;
145 89
146 lvds_enc_in: endpoint { 90 lvds_enc_in: endpoint {
147 remote-endpoint = <&display_out_rg 91 remote-endpoint = <&display_out_rgb>;
148 }; 92 };
149 }; 93 };
150 94
151 port@1 { 95 port@1 {
152 reg = <1>; 96 reg = <1>;
153 97
154 lvds_enc_out: endpoint { 98 lvds_enc_out: endpoint {
155 remote-endpoint = <&lvds_panel_in> 99 remote-endpoint = <&lvds_panel_in>;
156 }; 100 };
157 }; 101 };
158 }; 102 };
159 }; 103 };
160 104
161 - | 105 - |
162 lvds-decoder { 106 lvds-decoder {
163 compatible = "ti,ds90cf384a", "lvds-deco 107 compatible = "ti,ds90cf384a", "lvds-decoder";
164 108
165 ports { 109 ports {
166 #address-cells = <1>; 110 #address-cells = <1>;
167 #size-cells = <0>; 111 #size-cells = <0>;
168 112
169 port@0 { 113 port@0 {
170 reg = <0>; 114 reg = <0>;
171 115
172 lvds_dec_in: endpoint { 116 lvds_dec_in: endpoint {
173 remote-endpoint = <&display_out_lv 117 remote-endpoint = <&display_out_lvds>;
174 }; 118 };
175 }; 119 };
176 120
177 port@1 { 121 port@1 {
178 reg = <1>; 122 reg = <1>;
179 123
180 lvds_dec_out: endpoint { 124 lvds_dec_out: endpoint {
181 remote-endpoint = <&rgb_panel_in>; 125 remote-endpoint = <&rgb_panel_in>;
182 }; 126 };
183 }; 127 };
184 }; 128 };
185 }; 129 };
186 130
187 ... 131 ...
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.