blob: f7a56f7a0e4ac468664e530cbf205d60b671b7d9 [file] [log] [blame]
From dae17cb695268e4cd9a34a13f4624c6aa0da9116 Mon Sep 17 00:00:00 2001
From: "H. Nikolaus Schaller" <hns@goldelico.com>
Date: Sat, 28 Apr 2018 18:31:37 +0200
Subject: [PATCH 1585/1795] pca953x: add example how to use
interrupt-controller and gpio-controller
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>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
(cherry picked from commit 6906a4f9d10b27853e80998afcfb290d8f91c071)
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---
.../devicetree/bindings/gpio/gpio-pca953x.txt | 33 +++++++++++++++++++
1 file changed, 33 insertions(+)
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 */
+ };
+
--
2.19.0