* Omnivision OV7670 CMOS sensor
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The Omnivision OV7670 sensor supports multiple resolutions output, such as
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CIF, SVGA, UXGA. It also can support the YUV422/420, RGB565/555 or raw RGB
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output formats.
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Required Properties:
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- compatible: should be "ovti,ov7670"
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- clocks: reference to the xclk input clock.
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- clock-names: should be "xclk".
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Required Endpoint Properties:
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- hsync-active: active state of the HSYNC signal, 0/1 for LOW/HIGH respectively.
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- vsync-active: active state of the VSYNC signal, 0/1 for LOW/HIGH respectively.
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Optional Properties:
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- reset-gpios: reference to the GPIO connected to the resetb pin, if any.
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Active is low.
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- powerdown-gpios: reference to the GPIO connected to the pwdn pin, if any.
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Active is high.
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- ov7670,pclk-hb-disable: a boolean property to suppress pixel clock output
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signal during horizontal blankings.
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The device node must contain one 'port' child node with one 'endpoint' child
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sub-node for its digital output video port, in accordance with the video
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interface bindings defined in:
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Documentation/devicetree/bindings/media/video-interfaces.txt.
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Example:
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i2c1: i2c@f0018000 {
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ov7670: camera@21 {
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compatible = "ovti,ov7670";
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reg = <0x21>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_pck0_as_isi_mck &pinctrl_sensor_power &pinctrl_sensor_reset>;
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reset-gpios = <&pioE 11 GPIO_ACTIVE_LOW>;
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powerdown-gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
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clocks = <&pck0>;
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clock-names = "xclk";
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assigned-clocks = <&pck0>;
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assigned-clock-rates = <25000000>;
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ov7670,pclk-hb-disable;
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port {
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ov7670_0: endpoint {
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hsync-active = <0>;
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vsync-active = <0>;
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remote-endpoint = <&isi_0>;
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};
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};
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};
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};
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