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97 lines
2.9 KiB
97 lines
2.9 KiB
Renesas R-Car Video Input driver (rcar_vin)
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-------------------------------------------
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The rcar_vin device provides video input capabilities for the Renesas R-Car
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family of devices. The current blocks are always slaves and suppot one input
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channel which can be either RGB, YUYV or BT656.
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- compatible: Must be one or more of the following
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- "renesas,vin-r8a7795" for the R8A7795 device
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- "renesas,vin-r8a7794" for the R8A7794 device
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- "renesas,vin-r8a7793" for the R8A7793 device
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- "renesas,vin-r8a7792" for the R8A7792 device
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- "renesas,vin-r8a7791" for the R8A7791 device
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- "renesas,vin-r8a7790" for the R8A7790 device
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- "renesas,vin-r8a7779" for the R8A7779 device
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- "renesas,vin-r8a7778" for the R8A7778 device
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- "renesas,rcar-gen2-vin" for a generic R-Car Gen2 compatible device.
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- "renesas,rcar-gen3-vin" for a generic R-Car Gen3 compatible device.
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When compatible with the generic version nodes must list the
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SoC-specific version corresponding to the platform first
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followed by the generic version.
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- reg: the register base and size for the device registers
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- interrupts: the interrupt for the device
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- clocks: Reference to the parent clock
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Additionally, an alias named vinX will need to be created to specify
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which video input device this is.
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The per-board settings:
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- port sub-node describing a single endpoint connected to the vin
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as described in video-interfaces.txt[1]. Only the first one will
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be considered as each vin interface has one input port.
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These settings are used to work out video input format and widths
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into the system.
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Device node example
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-------------------
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aliases {
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vin0 = &vin0;
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};
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vin0: vin@0xe6ef0000 {
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compatible = "renesas,vin-r8a7790", "renesas,rcar-gen2-vin";
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clocks = <&mstp8_clks R8A7790_CLK_VIN0>;
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reg = <0 0xe6ef0000 0 0x1000>;
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interrupts = <0 188 IRQ_TYPE_LEVEL_HIGH>;
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status = "disabled";
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};
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Board setup example (vin1 composite video input)
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------------------------------------------------
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&i2c2 {
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status = "ok";
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pinctrl-0 = <&i2c2_pins>;
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pinctrl-names = "default";
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adv7180@20 {
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compatible = "adi,adv7180";
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reg = <0x20>;
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remote = <&vin1>;
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port {
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adv7180: endpoint {
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bus-width = <8>;
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remote-endpoint = <&vin1ep0>;
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};
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};
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};
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};
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/* composite video input */
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&vin1 {
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pinctrl-0 = <&vin1_pins>;
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pinctrl-names = "default";
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status = "ok";
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port {
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#address-cells = <1>;
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#size-cells = <0>;
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vin1ep0: endpoint {
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remote-endpoint = <&adv7180>;
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bus-width = <8>;
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};
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};
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};
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[1] video-interfaces.txt common video media interface
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