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dt-bindings: gpio: pca953x: Document interrupts, update example

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The device can optionally supply an interrupt, hence document that.

Add required GPIO properties to the example (extracted from a patch by
Wolfram Sang).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Geert Uytterhoeven 2018-06-19 19:24:41 +02:00 committed by Rob Herring
parent b01dcdd86e
commit 24a2994923
1 changed files with 3 additions and 0 deletions
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3
Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
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@ -37,6 +37,7 @@ Required properties:
- #interrupt-cells: if to be used as interrupt expander.
Optional properties:
- interrupts: interrupt specifier for the device's interrupt output.
- reset-gpios: GPIO specification for the RESET input. This is an
active low signal to the PCA953x.
- vcc-supply: power supply regulator.
@ -49,6 +50,8 @@ Example:
reg = <0x20>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pca9505>;
gpio-controller;
#gpio-cells = <2>;
interrupt-parent = <&gpio3>;
interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
};