Documentation/devicetree/bindings/media/atmel-isi.txt

   1 Atmel Image Sensor Interface (ISI)
   2 ----------------------------------
   3
   4 Required 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
  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 };