Documentation/devicetree/bindings/display/renesas,du.txt

   1 * Renesas R-Car Display Unit (DU)
   2
   3 Required Properties:
   4
   5   - compatible: must be one of the following.
   6     - "renesas,du-r8a7743" for R8A7743 (RZ/G1M) compatible DU
   7     - "renesas,du-r8a7745" for R8A7745 (RZ/G1E) compatible DU
   8     - "renesas,du-r8a7779" for R8A7779 (R-Car H1) compatible DU
   9     - "renesas,du-r8a7790" for R8A7790 (R-Car H2) compatible DU
  10     - "renesas,du-r8a7791" for R8A7791 (R-Car M2-W) compatible DU
  11     - "renesas,du-r8a7792" for R8A7792 (R-Car V2H) compatible DU
  12     - "renesas,du-r8a7793" for R8A7793 (R-Car M2-N) compatible DU
  13     - "renesas,du-r8a7794" for R8A7794 (R-Car E2) compatible DU
  14     - "renesas,du-r8a7795" for R8A7795 (R-Car H3) compatible DU
  15     - "renesas,du-r8a7796" for R8A7796 (R-Car M3-W) compatible DU
  16     - "renesas,du-r8a77965" for R8A77965 (R-Car M3-N) compatible DU
  17     - "renesas,du-r8a77970" for R8A77970 (R-Car V3M) compatible DU
  18     - "renesas,du-r8a77980" for R8A77980 (R-Car V3H) compatible DU
  19     - "renesas,du-r8a77990" for R8A77990 (R-Car E3) compatible DU
  20     - "renesas,du-r8a77995" for R8A77995 (R-Car D3) compatible DU
  21
  22   - reg: the memory-mapped I/O registers base address and length
  23
  24   - interrupts: Interrupt specifiers for the DU interrupts.
  25
  26   - clocks: A list of phandles + clock-specifier pairs, one for each entry in
  27     the clock-names property.
  28   - clock-names: Name of the clocks. This property is model-dependent.
  29     - R8A7779 uses a single functional clock. The clock doesn't need to be
  30       named.
  31     - All other DU instances use one functional clock per channel The
  32       functional clocks must be named "du.x" with "x" being the channel
  33       numerical index.
  34     - In addition to the functional clocks, all DU versions also support
  35       externally supplied pixel clocks. Those clocks are optional. When
  36       supplied they must be named "dclkin.x" with "x" being the input clock
  37       numerical index.
  38
  39   - vsps: A list of phandle and channel index tuples to the VSPs that handle
  40     the memory interfaces for the DU channels. The phandle identifies the VSP
  41     instance that serves the DU channel, and the channel index identifies the
  42     LIF instance in that VSP.
  43
  44 Required nodes:
  45
  46 The connections to the DU output video ports are modeled using the OF graph
  47 bindings specified in Documentation/devicetree/bindings/graph.txt.
  48
  49 The following table lists for each supported model the port number
  50 corresponding to each DU output.
  51
  52                         Port0          Port1          Port2          Port3
  53 -----------------------------------------------------------------------------
  54  R8A7743 (RZ/G1M)       DPAD 0         LVDS 0         -              -
  55  R8A7745 (RZ/G1E)       DPAD 0         DPAD 1         -              -
  56  R8A7779 (R-Car H1)     DPAD 0         DPAD 1         -              -
  57  R8A7790 (R-Car H2)     DPAD 0         LVDS 0         LVDS 1         -
  58  R8A7791 (R-Car M2-W)   DPAD 0         LVDS 0         -              -
  59  R8A7792 (R-Car V2H)    DPAD 0         DPAD 1         -              -
  60  R8A7793 (R-Car M2-N)   DPAD 0         LVDS 0         -              -
  61  R8A7794 (R-Car E2)     DPAD 0         DPAD 1         -              -
  62  R8A7795 (R-Car H3)     DPAD 0         HDMI 0         HDMI 1         LVDS 0
  63  R8A7796 (R-Car M3-W)   DPAD 0         HDMI 0         LVDS 0         -
  64  R8A77965 (R-Car M3-N)  DPAD 0         HDMI 0         LVDS 0         -
  65  R8A77970 (R-Car V3M)   DPAD 0         LVDS 0         -              -
  66  R8A77980 (R-Car V3H)   DPAD 0         LVDS 0         -              -
  67  R8A77990 (R-Car E3)    DPAD 0         LVDS 0         LVDS 1         -
  68  R8A77995 (R-Car D3)    DPAD 0         LVDS 0         LVDS 1         -
  69
  70
  71 Example: R8A7795 (R-Car H3) ES2.0 DU
  72
  73         du: display@feb00000 {
  74                 compatible = "renesas,du-r8a7795";
  75                 reg = <0 0xfeb00000 0 0x80000>;
  76                 interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>,
  77                              <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>,
  78                              <GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH>,
  79                              <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH>;
  80                 clocks = <&cpg CPG_MOD 724>,
  81                          <&cpg CPG_MOD 723>,
  82                          <&cpg CPG_MOD 722>,
  83                          <&cpg CPG_MOD 721>;
  84                 clock-names = "du.0", "du.1", "du.2", "du.3";
  85                 vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>;
  86
  87                 ports {
  88                         #address-cells = <1>;
  89                         #size-cells = <0>;
  90
  91                         port@0 {
  92                                 reg = <0>;
  93                                 du_out_rgb: endpoint {
  94                                 };
  95                         };
  96                         port@1 {
  97                                 reg = <1>;
  98                                 du_out_hdmi0: endpoint {
  99                                         remote-endpoint = <&dw_hdmi0_in>;
 100                                 };
 101                         };
 102                         port@2 {
 103                                 reg = <2>;
 104                                 du_out_hdmi1: endpoint {
 105                                         remote-endpoint = <&dw_hdmi1_in>;
 106                                 };
 107                         };
 108                         port@3 {
 109                                 reg = <3>;
 110                                 du_out_lvds0: endpoint {
 111                                 };
 112                         };
 113                 };
 114         };