linux/Documentation/devicetree/bindings/misc/ifm-csi.txt
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   1IFM camera sensor interface on mpc5200 LocalPlus bus
   2
   3Required properties:
   4- compatible: "ifm,o2d-csi"
   5- reg: specifies sensor chip select number and associated address range
   6- interrupts: external interrupt line number and interrupt sense mode
   7  of the interrupt line signaling frame valid events
   8- gpios: three gpio-specifiers for "capture", "reset" and "master enable"
   9  GPIOs (strictly in this order).
  10- ifm,csi-clk-handle: the phandle to a node in the DT describing the sensor
  11  clock generator. This node is usually a general purpose timer controller.
  12- ifm,csi-addr-bus-width: address bus width (valid values are 16, 24, 25)
  13- ifm,csi-data-bus-width: data bus width (valid values are 8 and 16)
  14- ifm,csi-wait-cycles: sensor bus wait cycles
  15
  16Optional properties:
  17- ifm,csi-byte-swap: if this property is present, the byte swapping on
  18  the bus will be enabled.
  19
  20Example:
  21
  22        csi@3,0 {
  23                compatible = "ifm,o2d-csi";
  24                reg = <3 0 0x00100000>;         /* CS 3, 1 MiB range */
  25                interrupts = <1 1 2>;           /* IRQ1, edge falling */
  26
  27                ifm,csi-clk-handle = <&timer7>;
  28                gpios = <&gpio_simple 23 0      /* image_capture */
  29                         &gpio_simple 26 0      /* image_reset */
  30                         &gpio_simple 29 0>;    /* image_master_en */
  31
  32                ifm,csi-addr-bus-width = <24>;
  33                ifm,csi-data-bus-width = <8>;
  34                ifm,csi-wait-cycles = <0>;
  35        };
  36
  37The base address of the used chip select is specified in the
  38ranges property of the parent localbus node, for example:
  39
  40        ranges = <0 0 0xff000000 0x01000000
  41                  3 0 0xe3000000 0x00100000>;
  42