1Atmel Image Sensor Interface (ISI)
2----------------------------------
3
4Required properties for ISI:
5- compatible: must be "atmel,at91sam9g45-isi".
6- reg: physical base address and length of the registers set for the device.
7- interrupts: should contain IRQ line for the ISI.
8- clocks: list of clock specifiers, corresponding to entries in the clock-names
9	property; please refer to clock-bindings.txt.
10- clock-names: required elements: "isi_clk".
11- pinctrl-names, pinctrl-0: please refer to pinctrl-bindings.txt.
12
13ISI supports a single port node with parallel bus. It shall contain one
14'port' child node with child 'endpoint' node. Please refer to the bindings
15defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
16
17Endpoint node properties
18------------------------
19
20- bus-width: <8> or <10> (mandatory)
21- hsync-active (default: active high)
22- vsync-active (default: active high)
23- pclk-sample (default: sample on falling edge)
24- remote-endpoint: A phandle to the bus receiver's endpoint node (mandatory).
25
26Example:
27
28isi: isi@f0034000 {
29	compatible = "atmel,at91sam9g45-isi";
30	reg = <0xf0034000 0x4000>;
31	interrupts = <37 IRQ_TYPE_LEVEL_HIGH 5>;
32	pinctrl-names = "default";
33	pinctrl-0 = <&pinctrl_isi_data_0_7>;
34	clocks = <&isi_clk>;
35	clock-names = "isi_clk";
36	port {
37		isi_0: endpoint {
38			remote-endpoint = <&ov2640_0>;
39			bus-width = <8>;
40			vsync-active = <1>;
41			hsync-active = <1>;
42		};
43	};
44};
45
46i2c1: i2c@f0018000 {
47	ov2640: camera@30 {
48		compatible = "ovti,ov2640";
49		reg = <0x30>;
50		pinctrl-names = "default";
51		pinctrl-0 = <&pinctrl_pck0_as_isi_mck &pinctrl_sensor_power &pinctrl_sensor_reset>;
52		resetb-gpios = <&pioE 11 GPIO_ACTIVE_LOW>;
53		pwdn-gpios = <&pioE 13 GPIO_ACTIVE_HIGH>;
54		clocks = <&pck0>;
55		clock-names = "xvclk";
56		assigned-clocks = <&pck0>;
57		assigned-clock-rates = <25000000>;
58
59		port {
60			ov2640_0: endpoint {
61				remote-endpoint = <&isi_0>;
62				bus-width = <8>;
63			};
64		};
65	};
66};
67