atmel-isi.txt

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    1 Atmel Image Sensor Interface (ISI)
    2 ----------------------------------
    3 
    4 Required properties for ISI:
    5 - compatible: must be "atmel,at91sam9g45-isi" or "microchip,sam9x60-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 
   13 ISI 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
   15 defined in Documentation/devicetree/bindings/media/video-interfaces.txt.
   16 
   17 Endpoint 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 
   26 Example:
   27 
   28 isi: 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 
   46 i2c1: 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 };

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