diff mbox series

[v5,7/7] DTS: Bindings: pca953x: add example how to use interrupt-controller and gpio-controller

Message ID 23c048310088d42c99c3c20a83795c97d1b8f1cc.1524933096.git.hns@goldelico.com
State New
Headers show
Series pcal6524 extensions and fixes for pca953x driver | expand

Commit Message

H. Nikolaus Schaller April 28, 2018, 4:31 p.m. UTC 
It is not completely obvious that these are required and
how to use them. So we provide a tested example.

Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 .../devicetree/bindings/gpio/gpio-pca953x.txt      | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)

Comments

Linus Walleij May 16, 2018, 11:56 a.m. UTC | #1 
On Sat, Apr 28, 2018 at 6:31 PM, H. Nikolaus Schaller <hns@goldelico.com> wrote:

> It is not completely obvious that these are required and
> how to use them. So we provide a tested example.
>
> Signed-off-by: H. Nikolaus Schaller <hns@goldelico.com>
> Reviewed-by: Rob Herring <robh@kernel.org>

Patch applied.

Yours,
Linus Walleij
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diff mbox series

Patch

diff --git a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
index 6a7cddb187c1..88f228665507 100644
--- a/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
+++ b/Documentation/devicetree/bindings/gpio/gpio-pca953x.txt
@@ -31,6 +31,10 @@  Required properties:
 	ti,tca9554
 	onnn,pca9654
 	exar,xra1202
+ - gpio-controller: if used as gpio expander.
+ - #gpio-cells: if used as gpio expander.
+ - interrupt-controller: if to be used as interrupt expander.
+ - #interrupt-cells: if to be used as interrupt expander.
 
 Optional properties:
  - reset-gpios: GPIO specification for the RESET input. This is an
@@ -48,3 +52,32 @@  Example:
 		interrupt-parent = <&gpio3>;
 		interrupts = <23 IRQ_TYPE_LEVEL_LOW>;
 	};
+
+
+Example with Interrupts:
+
+
+	gpio99: gpio@22 {
+		compatible = "nxp,pcal6524";
+		reg = <0x22>;
+		interrupt-parent = <&gpio6>;
+		interrupts = <1 IRQ_TYPE_EDGE_FALLING>;	/* gpio6_161 */
+		interrupt-controller;
+		#interrupt-cells = <2>;
+		vcc-supply = <&vdds_1v8_main>;
+		gpio-controller;
+		#gpio-cells = <2>;
+		gpio-line-names =
+			"hdmi-ct-hpd", "hdmi.ls-oe", "p02", "p03", "vibra", "fault2", "p06", "p07",
+			"en-usb", "en-host1", "en-host2", "chg-int", "p14", "p15", "mic-int", "en-modem",
+			"shdn-hs-amp", "chg-status+red", "green", "blue", "en-esata", "fault1", "p26", "p27";
+	};
+
+	ts3a227@3b {
+		compatible = "ti,ts3a227e";
+		reg = <0x3b>;
+		interrupt-parent = <&gpio99>;
+		interrupts = <14 IRQ_TYPE_EDGE_RISING>;
+		ti,micbias = <0>;	/* 2.1V */
+	};
+