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Documentation / devicetree / bindings / gpio / gpio-74x164.txt




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Based on kernel version 4.8. Page generated on 2016-10-06 23:11 EST.

1	* Generic 8-bits shift register GPIO driver
2	
3	Required properties:
4	- compatible: Should contain one of the following:
5	    "fairchild,74hc595"
6	    "nxp,74lvc594"
7	- reg : chip select number
8	- gpio-controller : Marks the device node as a gpio controller.
9	- #gpio-cells : Should be two.  The first cell is the pin number and
10	  the second cell is used to specify the gpio polarity:
11	      0 = active high
12	      1 = active low
13	- registers-number: Number of daisy-chained shift registers
14	
15	Example:
16	
17	gpio5: gpio5@0 {
18		compatible = "fairchild,74hc595";
19		reg = <0>;
20		gpio-controller;
21		#gpio-cells = <2>;
22		registers-number = <4>;
23		spi-max-frequency = <100000>;
24	};
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