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