Renesas Capture Engine Unit (CEU) ---------------------------------------------- The Capture Engine Unit is the image capture interface found in the Renesas SH Mobile, R-Mobile and RZ SoCs. The interface supports a single parallel input with data bus width of 8 or 16 bits. Required properties: - compatible: Shall be one of the following values: "renesas,r7s72100-ceu" for CEU units found in RZ/A1H and RZ/A1M SoCs "renesas,r8a7740-ceu" for CEU units found in R-Mobile A1 R8A7740 SoCs - reg: Registers address base and size. - interrupts: The interrupt specifier. The CEU supports a single parallel input and should contain a single 'port' subnode with a single 'endpoint'. Connection to input devices are modeled according to the video interfaces OF bindings specified in: [1] Documentation/devicetree/bindings/media/video-interfaces.txt Optional endpoint properties applicable to parallel input bus described in the above mentioned "video-interfaces.txt" file are supported. - hsync-active: See [1] for description. If property is not present, default is active high. - vsync-active: See [1] for description. If property is not present, default is active high. - bus-width: See [1] for description. Accepted values are '8' and '16'. If property is not present, default is '8'. - field-even-active: See [1] for description. If property is not present, an even field is identified by a logic 0 (active-low signal). Example: The example describes the connection between the Capture Engine Unit and an OV7670 image sensor connected to i2c1 interface. ceu: ceu@e8210000 { reg = <0xe8210000 0x209c>; compatible = "renesas,r7s72100-ceu"; interrupts = ; pinctrl-names = "default"; pinctrl-0 = <&vio_pins>; status = "okay"; port { ceu_in: endpoint { remote-endpoint = <&ov7670_out>; hsync-active = <1>; vsync-active = <0>; }; }; }; i2c1: i2c@fcfee400 { pinctrl-names = "default"; pinctrl-0 = <&i2c1_pins>; status = "okay"; clock-frequency = <100000>; ov7670: camera@21 { compatible = "ovti,ov7670"; reg = <0x21>; pinctrl-names = "default"; pinctrl-0 = <&vio_pins>; reset-gpios = <&port3 11 GPIO_ACTIVE_LOW>; powerdown-gpios = <&port3 12 GPIO_ACTIVE_HIGH>; port { ov7670_out: endpoint { remote-endpoint = <&ceu_in>; hsync-active = <1>; vsync-active = <0>; }; }; }; };