renesas,lvds.yaml

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    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 ...

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sys/contrib/device-tree/Bindings/display/bridge/renesas,lvds.yaml