projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 00e4b197 AG |
1 | IFM camera sensor interface on mpc5200 LocalPlus bus |
| 2 | ||
| 3 | Required 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 | ||
| 16 | Optional properties: | |
| 17 | - ifm,csi-byte-swap: if this property is present, the byte swapping on | |
| 18 | the bus will be enabled. | |
| 19 | ||
| 20 | Example: | |
| 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 | ||
| 37 | The base address of the used chip select is specified in the | |
| 38 | ranges property of the parent localbus node, for example: | |
| 39 | ||
| 40 | ranges = <0 0 0xff000000 0x01000000 | |
| 41 | 3 0 0xe3000000 0x00100000>; |