Based on kernel version 5.12
. Page generated on 2021-04-27 09:53 EST
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 | * 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>; }; |