tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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>;