Documentation/devicetree/bindings/media/rcar_vin.txt

   1 Renesas R-Car Video Input driver (rcar_vin)
   2 -------------------------------------------
   3
   4 The rcar_vin device provides video input capabilities for the Renesas R-Car
   5 family of devices.
   6
   7 Each VIN instance has a single parallel input that supports RGB and YUV video,
   8 with both external synchronization and BT.656 synchronization for the latter.
   9 Depending on the instance the VIN input is connected to external SoC pins, or
  10 on Gen3 platforms to a CSI-2 receiver.
  11
  12  - compatible: Must be one or more of the following
  13    - "renesas,vin-r8a7743" for the R8A7743 device
  14    - "renesas,vin-r8a7744" for the R8A7744 device
  15    - "renesas,vin-r8a7745" for the R8A7745 device
  16    - "renesas,vin-r8a7778" for the R8A7778 device
  17    - "renesas,vin-r8a7779" for the R8A7779 device
  18    - "renesas,vin-r8a7790" for the R8A7790 device
  19    - "renesas,vin-r8a7791" for the R8A7791 device
  20    - "renesas,vin-r8a7792" for the R8A7792 device
  21    - "renesas,vin-r8a7793" for the R8A7793 device
  22    - "renesas,vin-r8a7794" for the R8A7794 device
  23    - "renesas,vin-r8a7795" for the R8A7795 device
  24    - "renesas,vin-r8a7796" for the R8A7796 device
  25    - "renesas,vin-r8a77965" for the R8A77965 device
  26    - "renesas,vin-r8a77970" for the R8A77970 device
  27    - "renesas,vin-r8a77980" for the R8A77980 device
  28    - "renesas,vin-r8a77990" for the R8A77990 device
  29    - "renesas,vin-r8a77995" for the R8A77995 device
  30    - "renesas,rcar-gen2-vin" for a generic R-Car Gen2 or RZ/G1 compatible
  31      device.
  32
  33    When compatible with the generic version nodes must list the
  34    SoC-specific version corresponding to the platform first
  35    followed by the generic version.
  36
  37  - reg: the register base and size for the device registers
  38  - interrupts: the interrupt for the device
  39  - clocks: Reference to the parent clock
  40
  41 Additionally, an alias named vinX will need to be created to specify
  42 which video input device this is.
  43
  44 The per-board settings Gen2 platforms:
  45
  46 - port - sub-node describing a single endpoint connected to the VIN
  47   from external SoC pins as described in video-interfaces.txt[1].
  48   Only the first one will be considered as each vin interface has one
  49   input port.
  50
  51   - Optional properties for endpoint nodes:
  52     - hsync-active: see [1] for description. Default is active high.
  53     - vsync-active: see [1] for description. Default is active high.
  54       If both HSYNC and VSYNC polarities are not specified, embedded
  55       synchronization is selected.
  56     - field-active-even: see [1] for description. Default is active high.
  57     - bus-width: see [1] for description. The selected bus width depends on
  58       the SoC type and selected input image format.
  59       Valid values are: 8, 10, 12, 16, 24 and 32.
  60     - data-shift: see [1] for description. Valid values are 0 and 8.
  61     - data-enable-active: polarity of CLKENB signal, see [1] for
  62       description. Default is active high.
  63
  64 The per-board settings Gen3 platforms:
  65
  66 Gen3 platforms can support both a single connected parallel input source
  67 from external SoC pins (port@0) and/or multiple parallel input sources
  68 from local SoC CSI-2 receivers (port@1) depending on SoC.
  69
  70 - renesas,id - ID number of the VIN, VINx in the documentation.
  71 - ports
  72     - port@0 - sub-node describing a single endpoint connected to the VIN
  73       from external SoC pins as described in video-interfaces.txt[1].
  74       Describing more than one endpoint in port@0 is invalid. Only VIN
  75       instances that are connected to external pins should have port@0.
  76
  77       Endpoint nodes of port@0 support the optional properties listed in
  78       the Gen2 per-board settings description.
  79
  80     - port@1 - sub-nodes describing one or more endpoints connected to
  81       the VIN from local SoC CSI-2 receivers. The endpoint numbers must
  82       use the following schema.
  83
  84         - endpoint@0 - sub-node describing the endpoint connected to CSI20
  85         - endpoint@1 - sub-node describing the endpoint connected to CSI21
  86         - endpoint@2 - sub-node describing the endpoint connected to CSI40
  87         - endpoint@3 - sub-node describing the endpoint connected to CSI41
  88
  89       Endpoint nodes of port@1 do not support any optional endpoint property.
  90
  91 Device node example for Gen2 platforms
  92 --------------------------------------
  93
  94         aliases {
  95                 vin0 = &vin0;
  96         };
  97
  98         vin0: vin@e6ef0000 {
  99                 compatible = "renesas,vin-r8a7790", "renesas,rcar-gen2-vin";
 100                 clocks = <&mstp8_clks R8A7790_CLK_VIN0>;
 101                 reg = <0 0xe6ef0000 0 0x1000>;
 102                 interrupts = <0 188 IRQ_TYPE_LEVEL_HIGH>;
 103                 status = "disabled";
 104         };
 105
 106 Board setup example for Gen2 platforms (vin1 composite video input)
 107 -------------------------------------------------------------------
 108
 109 &i2c2   {
 110         status = "okay";
 111         pinctrl-0 = <&i2c2_pins>;
 112         pinctrl-names = "default";
 113
 114         adv7180@20 {
 115                 compatible = "adi,adv7180";
 116                 reg = <0x20>;
 117                 remote = <&vin1>;
 118
 119                 port {
 120                         adv7180: endpoint {
 121                                 bus-width = <8>;
 122                                 remote-endpoint = <&vin1ep0>;
 123                         };
 124                 };
 125         };
 126 };
 127
 128 /* composite video input */
 129 &vin1 {
 130         pinctrl-0 = <&vin1_pins>;
 131         pinctrl-names = "default";
 132
 133         status = "okay";
 134
 135         port {
 136                 vin1ep0: endpoint {
 137                         remote-endpoint = <&adv7180>;
 138                         bus-width = <8>;
 139                 };
 140         };
 141 };
 142
 143 Device node example for Gen3 platforms
 144 --------------------------------------
 145
 146         vin0: video@e6ef0000 {
 147                 compatible = "renesas,vin-r8a7795";
 148                 reg = <0 0xe6ef0000 0 0x1000>;
 149                 interrupts = <GIC_SPI 188 IRQ_TYPE_LEVEL_HIGH>;
 150                 clocks = <&cpg CPG_MOD 811>;
 151                 power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
 152                 resets = <&cpg 811>;
 153                 renesas,id = <0>;
 154
 155                 ports {
 156                         #address-cells = <1>;
 157                         #size-cells = <0>;
 158
 159                         port@1 {
 160                                 #address-cells = <1>;
 161                                 #size-cells = <0>;
 162
 163                                 reg = <1>;
 164
 165                                 vin0csi20: endpoint@0 {
 166                                         reg = <0>;
 167                                         remote-endpoint= <&csi20vin0>;
 168                                 };
 169                                 vin0csi21: endpoint@1 {
 170                                         reg = <1>;
 171                                         remote-endpoint= <&csi21vin0>;
 172                                 };
 173                                 vin0csi40: endpoint@2 {
 174                                         reg = <2>;
 175                                         remote-endpoint= <&csi40vin0>;
 176                                 };
 177                         };
 178                 };
 179         };
 180
 181         csi20: csi2@fea80000 {
 182                 compatible = "renesas,r8a7795-csi2";
 183                 reg = <0 0xfea80000 0 0x10000>;
 184                 interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
 185                 clocks = <&cpg CPG_MOD 714>;
 186                 power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
 187                 resets = <&cpg 714>;
 188
 189                 ports {
 190                         #address-cells = <1>;
 191                         #size-cells = <0>;
 192
 193                         port@0 {
 194                                 reg = <0>;
 195                                 csi20_in: endpoint {
 196                                         clock-lanes = <0>;
 197                                         data-lanes = <1>;
 198                                         remote-endpoint = <&adv7482_txb>;
 199                                 };
 200                         };
 201
 202                         port@1 {
 203                                 #address-cells = <1>;
 204                                 #size-cells = <0>;
 205
 206                                 reg = <1>;
 207
 208                                 csi20vin0: endpoint@0 {
 209                                         reg = <0>;
 210                                         remote-endpoint = <&vin0csi20>;
 211                                 };
 212                         };
 213                 };
 214         };
 215
 216 [1] video-interfaces.txt common video media interface