1 Generic Parallel-in/Serial-out Shift Register
2
3 This binding describes generic parallel-in/ser
4 devices that can be used for GPI (General Purp
5 SN74165 serial-out shift registers and the SN6
6 industrial serializers.
7
8 Required properties:
9 - compatible : Should be "pisosr-gp
10 - gpio-controller : Marks the device nod
11 - #gpio-cells : Should be two. For c
12
13 Optional properties:
14 - ngpios : Number of used GPIO
15 - load-gpios : GPIO pin specifier a
16 pin is pulsed before
17 load input pin value
18
19 For other required and optional properties of
20 nodes please refer to ../spi/spi-bus.txt.
21
22 Example:
23
24 gpio@0 {
25 compatible = "ti,sn65hvs882",
26 gpio-controller;
27 #gpio-cells = <2>;
28
29 load-gpios = <&gpio2 23 GPIO_A
30
31 reg = <0>;
32 spi-max-frequency = <1000000>;
33 spi-cpol;
34 };
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