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Commit 80018bd9 authored by Nicolas Saenz Julienne's avatar Nicolas Saenz Julienne Committed by Linus Walleij
Browse files

gpio: 74x164: add dt support for nxp's 74x594 



The chip is also an 8 bit shift register which works out of the box as a GPO
expander with this patch

Signed-off-by: default avatarNicolas Saenz Julienne <nicolassaenzj@gmail.com>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent c6cc75fe

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

+3 −1
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* Generic 8-bits shift register GPIO driver



Required properties:

- compatible : Should be "fairchild,74hc595"

- 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

drivers/gpio/gpio-74x164.c

+1 −0
Original line number Diff line number Diff line
@@ -177,6 +177,7 @@ static int gen_74x164_remove(struct spi_device *spi) 


static const struct of_device_id gen_74x164_dt_ids[] = {

	{ .compatible = "fairchild,74hc595" },

	{ .compatible = "nxp,74lvc594" },

	{},

};

MODULE_DEVICE_TABLE(of, gen_74x164_dt_ids);