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-* Generic 8-bits shift register GPIO driver
-
-Required properties:
-- compatible: Should contain one of the following:
- "fairchild,74hc595"
- "nxp,74lvc594"
-- reg : chip select number
-- gpio-controller : Marks the device node as a gpio controller.
-- #gpio-cells : Should be two. The first cell is the pin number and
- the second cell is used to specify the gpio polarity:
- 0 = active high
- 1 = active low
-- registers-number: Number of daisy-chained shift registers
-
-Optional properties:
-- enable-gpios: GPIO connected to the OE (Output Enable) pin.
-
-Example:
-
-gpio5: gpio5@0 {
- compatible = "fairchild,74hc595";
- reg = <0>;
- gpio-controller;
- #gpio-cells = <2>;
- registers-number = <4>;
- spi-max-frequency = <100000>;
-};