Atmel Image Sensor Interface (ISI)
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----------------------------------
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Required properties for ISI:
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- compatible: must be "atmel,at91sam9g45-isi".
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- reg: physical base address and length of the registers set for the device.
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- interrupts: should contain IRQ line for the ISI.
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- clocks: list of clock specifiers, corresponding to entries in the clock-names
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property; please refer to clock-bindings.txt.
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- clock-names: required elements: "isi_clk".
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- pinctrl-names, pinctrl-0: please refer to pinctrl-bindings.txt.
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ISI supports a single port node with parallel bus. It shall contain one
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'port' child node with child 'endpoint' node. Please refer to the bindings
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defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
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Endpoint node properties
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------------------------
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- bus-width: <8> or <10> (mandatory)
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- hsync-active (default: active high)
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- vsync-active (default: active high)
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- pclk-sample (default: sample on falling edge)
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- remote-endpoint: A phandle to the bus receiver's endpoint node (mandatory).
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Example:
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isi: isi@f0034000 {
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compatible = "atmel,at91sam9g45-isi";
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reg = <0xf0034000 0x4000>;
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interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>;
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pinctrl-names = "default";
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pinctrl-0 = <&pinctrl_isi_data_0_7>;
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clocks = <&isi_clk>;
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clock-names = "isi_clk";
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port {
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isi_0: endpoint {
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remote-endpoint = <&ov2640_0>;
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bus-width = <8>;
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vsync-active = <1>;
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hsync-active = <1>;
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};
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};
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};
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i2c1: i2c@f0018000 {
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ov2640: camera@30 {
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compatible = "ovti,ov2640";
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reg = <0x30>;
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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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resetb-gpios = <&pioE 11 GPIO_ACTIVE_LOW>;
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pwdn-gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
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clocks = <&pck0>;
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clock-names = "xvclk";
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assigned-clocks = <&pck0>;
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assigned-clock-rates = <25000000>;
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port {
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ov2640_0: endpoint {
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remote-endpoint = <&isi_0>;
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bus-width = <8>;
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};
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};
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};
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};
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