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