Documentation/devicetree/bindings/media/renesas,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 and RZ/G2 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-r8a774a1" for the R8A774A1 device
  17    - "renesas,vin-r8a774c0" for the R8A774C0 device
  18    - "renesas,vin-r8a7778" for the R8A7778 device
  19    - "renesas,vin-r8a7779" for the R8A7779 device
  20    - "renesas,vin-r8a7790" for the R8A7790 device
  21    - "renesas,vin-r8a7791" for the R8A7791 device
  22    - "renesas,vin-r8a7792" for the R8A7792 device
  23    - "renesas,vin-r8a7793" for the R8A7793 device
  24    - "renesas,vin-r8a7794" for the R8A7794 device
  25    - "renesas,vin-r8a7795" for the R8A7795 device
  26    - "renesas,vin-r8a7796" for the R8A7796 device
  27    - "renesas,vin-r8a77965" for the R8A77965 device
  28    - "renesas,vin-r8a77970" for the R8A77970 device
  29    - "renesas,vin-r8a77980" for the R8A77980 device
  30    - "renesas,vin-r8a77990" for the R8A77990 device
  31    - "renesas,vin-r8a77995" for the R8A77995 device
  32    - "renesas,rcar-gen2-vin" for a generic R-Car Gen2 or RZ/G1 compatible
  33      device.
  34
  35    When compatible with the generic version nodes must list the
  36    SoC-specific version corresponding to the platform first
  37    followed by the generic version.
  38
  39  - reg: the register base and size for the device registers
  40  - interrupts: the interrupt for the device
  41  - clocks: Reference to the parent clock
  42
  43 Additionally, an alias named vinX will need to be created to specify
  44 which video input device this is.
  45
  46 The per-board settings Gen2 platforms:
  47
  48 - port - sub-node describing a single endpoint connected to the VIN
  49   from external SoC pins as described in video-interfaces.txt[1].
  50   Only the first one will be considered as each vin interface has one
  51   input port.
  52
  53   - Optional properties for endpoint nodes:
  54     - hsync-active: see [1] for description. Default is active high.
  55     - vsync-active: see [1] for description. Default is active high.
  56       If both HSYNC and VSYNC polarities are not specified, embedded
  57       synchronization is selected.
  58     - field-active-even: see [1] for description. Default is active high.
  59     - bus-width: see [1] for description. The selected bus width depends on
  60       the SoC type and selected input image format.
  61       Valid values are: 8, 10, 12, 16, 24 and 32.
  62     - data-shift: see [1] for description. Valid values are 0 and 8.
  63     - data-enable-active: polarity of CLKENB signal, see [1] for
  64       description. Default is active high.
  65
  66 The per-board settings Gen3 and RZ/G2 platforms:
  67
  68 Gen3 and RZ/G2 platforms can support both a single connected parallel input
  69 source from external SoC pins (port@0) and/or multiple parallel input sources
  70 from local SoC CSI-2 receivers (port@1) depending on SoC.
  71
  72 - renesas,id - ID number of the VIN, VINx in the documentation.
  73 - ports
  74     - port@0 - sub-node describing a single endpoint connected to the VIN
  75       from external SoC pins as described in video-interfaces.txt[1].
  76       Describing more than one endpoint in port@0 is invalid. Only VIN
  77       instances that are connected to external pins should have port@0.
  78
  79       Endpoint nodes of port@0 support the optional properties listed in
  80       the Gen2 per-board settings description.
  81
  82     - port@1 - sub-nodes describing one or more endpoints connected to
  83       the VIN from local SoC CSI-2 receivers. The endpoint numbers must
  84       use the following schema.
  85
  86         - endpoint@0 - sub-node describing the endpoint connected to CSI20
  87         - endpoint@1 - sub-node describing the endpoint connected to CSI21
  88         - endpoint@2 - sub-node describing the endpoint connected to CSI40
  89         - endpoint@3 - sub-node describing the endpoint connected to CSI41
  90
  91       Endpoint nodes of port@1 do not support any optional endpoint property.
  92
  93 Device node example for Gen2 platforms
  94 --------------------------------------
  95
  96         aliases {
  97                 vin0 = &vin0;
  98         };
  99
 100         vin0: vin@e6ef0000 {
 101                 compatible = "renesas,vin-r8a7790", "renesas,rcar-gen2-vin";
 102                 clocks = <&mstp8_clks R8A7790_CLK_VIN0>;
 103                 reg = <0 0xe6ef0000 0 0x1000>;
 104                 interrupts = <0 188 IRQ_TYPE_LEVEL_HIGH>;
 105                 status = "disabled";
 106         };
 107
 108 Board setup example for Gen2 platforms (vin1 composite video input)
 109 -------------------------------------------------------------------
 110
 111 &i2c2   {
 112         status = "okay";
 113         pinctrl-0 = <&i2c2_pins>;
 114         pinctrl-names = "default";
 115
 116         adv7180@20 {
 117                 compatible = "adi,adv7180";
 118                 reg = <0x20>;
 119                 remote = <&vin1>;
 120
 121                 port {
 122                         adv7180: endpoint {
 123                                 bus-width = <8>;
 124                                 remote-endpoint = <&vin1ep0>;
 125                         };
 126                 };
 127         };
 128 };
 129
 130 /* composite video input */
 131 &vin1 {
 132         pinctrl-0 = <&vin1_pins>;
 133         pinctrl-names = "default";
 134
 135         status = "okay";
 136
 137         port {
 138                 vin1ep0: endpoint {
 139                         remote-endpoint = <&adv7180>;
 140                         bus-width = <8>;
 141                 };
 142         };
 143 };
 144
 145 Device node example for Gen3 platforms
 146 --------------------------------------
 147
 148         vin0: video@e6ef0000 {
 149                 compatible = "renesas,vin-r8a7795";
 150                 reg = <0 0xe6ef0000 0 0x1000>;
 151                 interrupts = <GIC_SPI 188 IRQ_TYPE_LEVEL_HIGH>;
 152                 clocks = <&cpg CPG_MOD 811>;
 153                 power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
 154                 resets = <&cpg 811>;
 155                 renesas,id = <0>;
 156
 157                 ports {
 158                         #address-cells = <1>;
 159                         #size-cells = <0>;
 160
 161                         port@1 {
 162                                 #address-cells = <1>;
 163                                 #size-cells = <0>;
 164
 165                                 reg = <1>;
 166
 167                                 vin0csi20: endpoint@0 {
 168                                         reg = <0>;
 169                                         remote-endpoint= <&csi20vin0>;
 170                                 };
 171                                 vin0csi21: endpoint@1 {
 172                                         reg = <1>;
 173                                         remote-endpoint= <&csi21vin0>;
 174                                 };
 175                                 vin0csi40: endpoint@2 {
 176                                         reg = <2>;
 177                                         remote-endpoint= <&csi40vin0>;
 178                                 };
 179                         };
 180                 };
 181         };
 182
 183         csi20: csi2@fea80000 {
 184                 compatible = "renesas,r8a7795-csi2";
 185                 reg = <0 0xfea80000 0 0x10000>;
 186                 interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>;
 187                 clocks = <&cpg CPG_MOD 714>;
 188                 power-domains = <&sysc R8A7795_PD_ALWAYS_ON>;
 189                 resets = <&cpg 714>;
 190
 191                 ports {
 192                         #address-cells = <1>;
 193                         #size-cells = <0>;
 194
 195                         port@0 {
 196                                 reg = <0>;
 197                                 csi20_in: endpoint {
 198                                         clock-lanes = <0>;
 199                                         data-lanes = <1>;
 200                                         remote-endpoint = <&adv7482_txb>;
 201                                 };
 202                         };
 203
 204                         port@1 {
 205                                 #address-cells = <1>;
 206                                 #size-cells = <0>;
 207
 208                                 reg = <1>;
 209
 210                                 csi20vin0: endpoint@0 {
 211                                         reg = <0>;
 212                                         remote-endpoint = <&vin0csi20>;
 213                                 };
 214                         };
 215                 };
 216         };
 217
 218 [1] video-interfaces.txt common video media interface