From a444e5184f329738691b06ed31addaa0edb6aa01 Mon Sep 17 00:00:00 2001 From: Jacopo Mondi Date: Wed, 21 Feb 2018 12:47:55 -0500 Subject: media: dt-bindings: media: Add Renesas CEU bindings Add bindings documentation for Renesas Capture Engine Unit (CEU). Signed-off-by: Jacopo Mondi Reviewed-by: Rob Herring Reviewed-by: Laurent Pinchart Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- .../devicetree/bindings/media/renesas,ceu.txt | 81 ++++++++++++++++++++++ 1 file changed, 81 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/renesas,ceu.txt (limited to 'Documentation/devicetree/bindings/media/renesas,ceu.txt') diff --git a/Documentation/devicetree/bindings/media/renesas,ceu.txt b/Documentation/devicetree/bindings/media/renesas,ceu.txt new file mode 100644 index 000000000000..3fc66dfb192c --- /dev/null +++ b/Documentation/devicetree/bindings/media/renesas,ceu.txt @@ -0,0 +1,81 @@ +Renesas Capture Engine Unit (CEU) +---------------------------------------------- + +The Capture Engine Unit is the image capture interface found in the Renesas +SH 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 "renesas,r7s72100-ceu" for CEU units found in RZ/A1H + and RZ/A1M 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: +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: Active state of the HSYNC signal, 0/1 for LOW/HIGH respectively. + If property is not present, default is active high. +- vsync-active: Active state of the VSYNC signal, 0/1 for LOW/HIGH respectively. + If property is not present, default is active high. + +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>; + }; + }; + }; +}; -- cgit v1.2.3-59-g8ed1b