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Diffstat (limited to 'Documentation/devicetree/bindings/media/rcar_vin.txt')
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diff --git a/Documentation/devicetree/bindings/media/rcar_vin.txt b/Documentation/devicetree/bindings/media/rcar_vin.txt new file mode 100644 index 000000000..2f420050d --- /dev/null +++ b/Documentation/devicetree/bindings/media/rcar_vin.txt @@ -0,0 +1,213 @@ +Renesas R-Car Video Input driver (rcar_vin) +------------------------------------------- + +The rcar_vin device provides video input capabilities for the Renesas R-Car +family of devices. + +Each VIN instance has a single parallel input that supports RGB and YUV video, +with both external synchronization and BT.656 synchronization for the latter. +Depending on the instance the VIN input is connected to external SoC pins, or +on Gen3 platforms to a CSI-2 receiver. + + - compatible: Must be one or more of the following + - "renesas,vin-r8a7743" for the R8A7743 device + - "renesas,vin-r8a7745" for the R8A7745 device + - "renesas,vin-r8a7778" for the R8A7778 device + - "renesas,vin-r8a7779" for the R8A7779 device + - "renesas,vin-r8a7790" for the R8A7790 device + - "renesas,vin-r8a7791" for the R8A7791 device + - "renesas,vin-r8a7792" for the R8A7792 device + - "renesas,vin-r8a7793" for the R8A7793 device + - "renesas,vin-r8a7794" for the R8A7794 device + - "renesas,vin-r8a7795" for the R8A7795 device + - "renesas,vin-r8a7796" for the R8A7796 device + - "renesas,vin-r8a77965" for the R8A77965 device + - "renesas,vin-r8a77970" for the R8A77970 device + - "renesas,vin-r8a77995" for the R8A77995 device + - "renesas,rcar-gen2-vin" for a generic R-Car Gen2 or RZ/G1 compatible + device. + + When compatible with the generic version nodes must list the + SoC-specific version corresponding to the platform first + followed by the generic version. + + - reg: the register base and size for the device registers + - interrupts: the interrupt for the device + - clocks: Reference to the parent clock + +Additionally, an alias named vinX will need to be created to specify +which video input device this is. + +The per-board settings Gen2 platforms: + +- port - sub-node describing a single endpoint connected to the VIN + from external SoC pins as described in video-interfaces.txt[1]. + Only the first one will be considered as each vin interface has one + input port. + + - Optional properties for endpoint nodes: + - hsync-active: see [1] for description. Default is active high. + - vsync-active: see [1] for description. Default is active high. + If both HSYNC and VSYNC polarities are not specified, embedded + synchronization is selected. + - field-active-even: see [1] for description. Default is active high. + - bus-width: see [1] for description. The selected bus width depends on + the SoC type and selected input image format. + Valid values are: 8, 10, 12, 16, 24 and 32. + - data-shift: see [1] for description. Valid values are 0 and 8. + - data-enable-active: polarity of CLKENB signal, see [1] for + description. Default is active high. + +The per-board settings Gen3 platforms: + +Gen3 platforms can support both a single connected parallel input source +from external SoC pins (port@0) and/or multiple parallel input sources +from local SoC CSI-2 receivers (port@1) depending on SoC. + +- renesas,id - ID number of the VIN, VINx in the documentation. +- ports + - port@0 - sub-node describing a single endpoint connected to the VIN + from external SoC pins as described in video-interfaces.txt[1]. + Describing more than one endpoint in port@0 is invalid. Only VIN + instances that are connected to external pins should have port@0. + + Endpoint nodes of port@0 support the optional properties listed in + the Gen2 per-board settings description. + + - port@1 - sub-nodes describing one or more endpoints connected to + the VIN from local SoC CSI-2 receivers. The endpoint numbers must + use the following schema. + + - endpoint@0 - sub-node describing the endpoint connected to CSI20 + - endpoint@1 - sub-node describing the endpoint connected to CSI21 + - endpoint@2 - sub-node describing the endpoint connected to CSI40 + - endpoint@3 - sub-node describing the endpoint connected to CSI41 + + Endpoint nodes of port@1 do not support any optional endpoint property. + +Device node example for Gen2 platforms +-------------------------------------- + + aliases { + vin0 = &vin0; + }; + + vin0: vin@e6ef0000 { + compatible = "renesas,vin-r8a7790", "renesas,rcar-gen2-vin"; + clocks = <&mstp8_clks R8A7790_CLK_VIN0>; + reg = <0 0xe6ef0000 0 0x1000>; + interrupts = <0 188 IRQ_TYPE_LEVEL_HIGH>; + status = "disabled"; + }; + +Board setup example for Gen2 platforms (vin1 composite video input) +------------------------------------------------------------------- + +&i2c2 { + status = "okay"; + pinctrl-0 = <&i2c2_pins>; + pinctrl-names = "default"; + + adv7180@20 { + compatible = "adi,adv7180"; + reg = <0x20>; + remote = <&vin1>; + + port { + adv7180: endpoint { + bus-width = <8>; + remote-endpoint = <&vin1ep0>; + }; + }; + }; +}; + +/* composite video input */ +&vin1 { + pinctrl-0 = <&vin1_pins>; + pinctrl-names = "default"; + + status = "okay"; + + port { + vin1ep0: endpoint { + remote-endpoint = <&adv7180>; + bus-width = <8>; + }; + }; +}; + +Device node example for Gen3 platforms +-------------------------------------- + + vin0: video@e6ef0000 { + compatible = "renesas,vin-r8a7795"; + reg = <0 0xe6ef0000 0 0x1000>; + interrupts = <GIC_SPI 188 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cpg CPG_MOD 811>; + power-domains = <&sysc R8A7795_PD_ALWAYS_ON>; + resets = <&cpg 811>; + renesas,id = <0>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@1 { + #address-cells = <1>; + #size-cells = <0>; + + reg = <1>; + + vin0csi20: endpoint@0 { + reg = <0>; + remote-endpoint= <&csi20vin0>; + }; + vin0csi21: endpoint@1 { + reg = <1>; + remote-endpoint= <&csi21vin0>; + }; + vin0csi40: endpoint@2 { + reg = <2>; + remote-endpoint= <&csi40vin0>; + }; + }; + }; + }; + + csi20: csi2@fea80000 { + compatible = "renesas,r8a7795-csi2"; + reg = <0 0xfea80000 0 0x10000>; + interrupts = <GIC_SPI 184 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cpg CPG_MOD 714>; + power-domains = <&sysc R8A7795_PD_ALWAYS_ON>; + resets = <&cpg 714>; + + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + csi20_in: endpoint { + clock-lanes = <0>; + data-lanes = <1>; + remote-endpoint = <&adv7482_txb>; + }; + }; + + port@1 { + #address-cells = <1>; + #size-cells = <0>; + + reg = <1>; + + csi20vin0: endpoint@0 { + reg = <0>; + remote-endpoint = <&vin0csi20>; + }; + }; + }; + }; + +[1] video-interfaces.txt common video media interface |