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author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-09-27 12:47:17 +1000 |
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committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2012-09-27 12:47:17 +1000 |
commit | 9aae341287f55d5fc71f8a884e671f9058ad3388 (patch) | |
tree | 974ce958e70c0afd0a81cdda6f30d9a037470a98 /Documentation | |
parent | caa1d631fc99940f866480c2bb88a6f5a235e7a2 (diff) | |
parent | 9d9fd8871b4136755160bf95a9abd0d23d738ddc (diff) | |
download | linux-9aae341287f55d5fc71f8a884e671f9058ad3388.tar.bz2 |
Merge remote-tracking branch 'agust/next' into next
mpc5xxx updates from Anatolij
Diffstat (limited to 'Documentation')
-rw-r--r-- | Documentation/devicetree/bindings/misc/ifm-csi.txt | 41 |
1 files changed, 41 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/misc/ifm-csi.txt b/Documentation/devicetree/bindings/misc/ifm-csi.txt new file mode 100644 index 000000000000..5bdfffb0b9f7 --- /dev/null +++ b/Documentation/devicetree/bindings/misc/ifm-csi.txt @@ -0,0 +1,41 @@ +IFM camera sensor interface on mpc5200 LocalPlus bus + +Required properties: +- compatible: "ifm,o2d-csi" +- reg: specifies sensor chip select number and associated address range +- interrupts: external interrupt line number and interrupt sense mode + of the interrupt line signaling frame valid events +- gpios: three gpio-specifiers for "capture", "reset" and "master enable" + GPIOs (strictly in this order). +- ifm,csi-clk-handle: the phandle to a node in the DT describing the sensor + clock generator. This node is usually a general purpose timer controller. +- ifm,csi-addr-bus-width: address bus width (valid values are 16, 24, 25) +- ifm,csi-data-bus-width: data bus width (valid values are 8 and 16) +- ifm,csi-wait-cycles: sensor bus wait cycles + +Optional properties: +- ifm,csi-byte-swap: if this property is present, the byte swapping on + the bus will be enabled. + +Example: + + csi@3,0 { + compatible = "ifm,o2d-csi"; + reg = <3 0 0x00100000>; /* CS 3, 1 MiB range */ + interrupts = <1 1 2>; /* IRQ1, edge falling */ + + ifm,csi-clk-handle = <&timer7>; + gpios = <&gpio_simple 23 0 /* image_capture */ + &gpio_simple 26 0 /* image_reset */ + &gpio_simple 29 0>; /* image_master_en */ + + ifm,csi-addr-bus-width = <24>; + ifm,csi-data-bus-width = <8>; + ifm,csi-wait-cycles = <0>; + }; + +The base address of the used chip select is specified in the +ranges property of the parent localbus node, for example: + + ranges = <0 0 0xff000000 0x01000000 + 3 0 0xe3000000 0x00100000>; |