1* Renesas R-Car Display Unit (DU) 2 3Required Properties: 4 5 - compatible: must be one of the following. 6 - "renesas,du-r8a7779" for R8A7779 (R-Car H1) compatible DU 7 - "renesas,du-r8a7790" for R8A7790 (R-Car H2) compatible DU 8 - "renesas,du-r8a7791" for R8A7791 (R-Car M2-W) compatible DU 9 - "renesas,du-r8a7792" for R8A7792 (R-Car V2H) compatible DU 10 - "renesas,du-r8a7793" for R8A7793 (R-Car M2-N) compatible DU 11 - "renesas,du-r8a7794" for R8A7794 (R-Car E2) compatible DU 12 - "renesas,du-r8a7795" for R8A7795 (R-Car H3) compatible DU 13 - "renesas,du-r8a7796" for R8A7796 (R-Car M3-W) compatible DU 14 15 - reg: A list of base address and length of each memory resource, one for 16 each entry in the reg-names property. 17 - reg-names: Name of the memory resources. The DU requires one memory 18 resource for the DU core (named "du") and one memory resource for each 19 LVDS encoder (named "lvds.x" with "x" being the LVDS controller numerical 20 index). 21 22 - interrupt-parent: phandle of the parent interrupt controller. 23 - interrupts: Interrupt specifiers for the DU interrupts. 24 25 - clocks: A list of phandles + clock-specifier pairs, one for each entry in 26 the clock-names property. 27 - clock-names: Name of the clocks. This property is model-dependent. 28 - R8A7779 uses a single functional clock. The clock doesn't need to be 29 named. 30 - R8A779[0123456] use one functional clock per channel and one clock per 31 LVDS encoder (if available). The functional clocks must be named "du.x" 32 with "x" being the channel numerical index. The LVDS clocks must be 33 named "lvds.x" with "x" being the LVDS encoder numerical index. 34 - In addition to the functional and encoder clocks, all DU versions also 35 support externally supplied pixel clocks. Those clocks are optional. 36 When supplied they must be named "dclkin.x" with "x" being the input 37 clock 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 44Required nodes: 45 46The connections to the DU output video ports are modeled using the OF graph 47bindings specified in Documentation/devicetree/bindings/graph.txt. 48 49The following table lists for each supported model the port number 50corresponding to each DU output. 51 52 Port 0 Port1 Port2 Port3 53----------------------------------------------------------------------------- 54 R8A7779 (H1) DPAD 0 DPAD 1 - - 55 R8A7790 (H2) DPAD LVDS 0 LVDS 1 - 56 R8A7791 (M2-W) DPAD LVDS 0 - - 57 R8A7792 (V2H) DPAD 0 DPAD 1 - - 58 R8A7793 (M2-N) DPAD LVDS 0 - - 59 R8A7794 (E2) DPAD 0 DPAD 1 - - 60 R8A7795 (H3) DPAD HDMI 0 HDMI 1 LVDS 61 R8A7796 (M3-W) DPAD HDMI LVDS - 62 63 64Example: R8A7795 (R-Car H3) ES2.0 DU 65 66 du: display@feb00000 { 67 compatible = "renesas,du-r8a7795"; 68 reg = <0 0xfeb00000 0 0x80000>, 69 <0 0xfeb90000 0 0x14>; 70 reg-names = "du", "lvds.0"; 71 interrupts = <GIC_SPI 256 IRQ_TYPE_LEVEL_HIGH>, 72 <GIC_SPI 268 IRQ_TYPE_LEVEL_HIGH>, 73 <GIC_SPI 269 IRQ_TYPE_LEVEL_HIGH>, 74 <GIC_SPI 270 IRQ_TYPE_LEVEL_HIGH>; 75 clocks = <&cpg CPG_MOD 724>, 76 <&cpg CPG_MOD 723>, 77 <&cpg CPG_MOD 722>, 78 <&cpg CPG_MOD 721>, 79 <&cpg CPG_MOD 727>; 80 clock-names = "du.0", "du.1", "du.2", "du.3", "lvds.0"; 81 vsps = <&vspd0 0>, <&vspd1 0>, <&vspd2 0>, <&vspd0 1>; 82 83 ports { 84 #address-cells = <1>; 85 #size-cells = <0>; 86 87 port@0 { 88 reg = <0>; 89 du_out_rgb: endpoint { 90 }; 91 }; 92 port@1 { 93 reg = <1>; 94 du_out_hdmi0: endpoint { 95 remote-endpoint = <&dw_hdmi0_in>; 96 }; 97 }; 98 port@2 { 99 reg = <2>; 100 du_out_hdmi1: endpoint { 101 remote-endpoint = <&dw_hdmi1_in>; 102 }; 103 }; 104 port@3 { 105 reg = <3>; 106 du_out_lvds0: endpoint { 107 }; 108 }; 109 }; 110 }; 111