67 lines
1.9 KiB
Plaintext
67 lines
1.9 KiB
Plaintext
Atmel Image Sensor Interface (ISI)
|
|
----------------------------------
|
|
|
|
Required properties for ISI:
|
|
- compatible: must be "atmel,at91sam9g45-isi".
|
|
- reg: physical base address and length of the registers set for the device.
|
|
- interrupts: should contain IRQ line for the ISI.
|
|
- clocks: list of clock specifiers, corresponding to entries in the clock-names
|
|
property; please refer to clock-bindings.txt.
|
|
- clock-names: required elements: "isi_clk".
|
|
- pinctrl-names, pinctrl-0: please refer to pinctrl-bindings.txt.
|
|
|
|
ISI supports a single port node with parallel bus. It shall contain one
|
|
'port' child node with child 'endpoint' node. Please refer to the bindings
|
|
defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
|
|
|
|
Endpoint node properties
|
|
------------------------
|
|
|
|
- bus-width: <8> or <10> (mandatory)
|
|
- hsync-active (default: active high)
|
|
- vsync-active (default: active high)
|
|
- pclk-sample (default: sample on falling edge)
|
|
- remote-endpoint: A phandle to the bus receiver's endpoint node (mandatory).
|
|
|
|
Example:
|
|
|
|
isi: isi@f0034000 {
|
|
compatible = "atmel,at91sam9g45-isi";
|
|
reg = <0xf0034000 0x4000>;
|
|
interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>;
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&pinctrl_isi_data_0_7>;
|
|
clocks = <&isi_clk>;
|
|
clock-names = "isi_clk";
|
|
port {
|
|
isi_0: endpoint {
|
|
remote-endpoint = <&ov2640_0>;
|
|
bus-width = <8>;
|
|
vsync-active = <1>;
|
|
hsync-active = <1>;
|
|
};
|
|
};
|
|
};
|
|
|
|
i2c1: i2c@f0018000 {
|
|
ov2640: camera@30 {
|
|
compatible = "ovti,ov2640";
|
|
reg = <0x30>;
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&pinctrl_pck0_as_isi_mck &pinctrl_sensor_power &pinctrl_sensor_reset>;
|
|
resetb-gpios = <&pioE 11 GPIO_ACTIVE_LOW>;
|
|
pwdn-gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
|
|
clocks = <&pck0>;
|
|
clock-names = "xvclk";
|
|
assigned-clocks = <&pck0>;
|
|
assigned-clock-rates = <25000000>;
|
|
|
|
port {
|
|
ov2640_0: endpoint {
|
|
remote-endpoint = <&isi_0>;
|
|
bus-width = <8>;
|
|
};
|
|
};
|
|
};
|
|
};
|