From mboxrd@z Thu Jan 1 00:00:00 1970 From: "H. Nikolaus Schaller" Subject: [PATCH v5 7/7] DTS: Bindings: pca953x: add example how to use interrupt-controller and gpio-controller Date: Sat, 28 Apr 2018 18:31:37 +0200 Message-ID: <23c048310088d42c99c3c20a83795c97d1b8f1cc.1524933096.git.hns@goldelico.com> References: Return-path: In-Reply-To: In-Reply-To: References: Sender: linux-kernel-owner@vger.kernel.org To: galak@codeaurora.org, andy.shevchenko@gmail.com, Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Linus Walleij , Alexandre Courbot Cc: devicetree@vger.kernel.org, linux-gpio@vger.kernel.org, linux-kernel@vger.kernel.org, letux-kernel@openphoenux.org, kernel@pyra-handheld.com, "H. Nikolaus Schaller" List-Id: devicetree@vger.kernel.org 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 Reviewed-by: Rob Herring --- .../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 */ + }; + -- 2.12.2