From mboxrd@z Thu Jan 1 00:00:00 1970 From: =?UTF-8?q?Michal=20Vok=C3=A1=C4=8D?= Subject: [RFC PATCH 1/4] dt-bindings: input: Add support for the MPR121 without interrupt line Date: Fri, 26 Apr 2019 10:30:17 +0200 Message-ID: <1556267420-93219-2-git-send-email-michal.vokac@ysoft.com> References: <1556267420-93219-1-git-send-email-michal.vokac@ysoft.com> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Return-path: In-Reply-To: <1556267420-93219-1-git-send-email-michal.vokac@ysoft.com> Sender: linux-kernel-owner@vger.kernel.org To: Dmitry Torokhov , Rob Herring Cc: Mark Rutland , Shawn Guo , Sascha Hauer , Fabio Estevam , linux-input@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Pengutronix Kernel Team , =?UTF-8?q?Michal=20Vok=C3=A1=C4=8D?= List-Id: devicetree@vger.kernel.org Normally, the MPR121 controller uses separate interrupt line to notify the I2C host that a key was touched/released. To support platforms that can not use the interrupt line, polling of the MPR121 registers can be used. Signed-off-by: Michal Vokáč --- .../bindings/input/mpr121-touchkey-polled.txt | 26 ++++++++++++++++++++++ 1 file changed, 26 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/mpr121-touchkey-polled.txt diff --git a/Documentation/devicetree/bindings/input/mpr121-touchkey-polled.txt b/Documentation/devicetree/bindings/input/mpr121-touchkey-polled.txt new file mode 100644 index 000000000000..6bb1d312614c --- /dev/null +++ b/Documentation/devicetree/bindings/input/mpr121-touchkey-polled.txt @@ -0,0 +1,26 @@ +* Freescale MPR121 Controller without interrupt line + +Required Properties: +- compatible: Should be "fsl,mpr121-touchkey-polled" +- reg: The I2C slave address of the device. +- vdd-supply: Phandle to the Vdd power supply. +- linux,keycodes: Specifies an array of numeric keycode values to + be used for reporting button presses. The array can + contain up to 12 entries. + +Optional Properties: +- autorepeat: Enable autorepeat feature. + +Example: + +#include "dt-bindings/input/input.h" + + touchkeys: keys@5a { + compatible = "fsl,mpr121-touchkey-polled"; + reg = <0x5a>; + autorepeat; + vdd-supply = <&ldo4_reg>; + linux,keycodes = , , , , + , , , + , , , ; + }; -- 2.1.4