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authorAkinobu Mita <akinobu.mita@gmail.com>2017-01-15 14:51:12 -0800
committerDmitry Torokhov <dmitry.torokhov@gmail.com>2017-01-15 15:08:46 -0800
commitde901cc31d151c4c855346c29fb61eaf5ffac3ad (patch)
tree1e2f984b9858ab3957dd955b1138b3165fb3a7c5 /Documentation/devicetree/bindings/input/mpr121-touchkey.txt
parent08fea55e37f58371bffc5336a59e55d1f155955a (diff)
Input: mpr121 - switch to device tree probe
This driver currently only supports legacy platform data probe. This change adds device tree support and gets rid of platform data probe code since no one is actually using mpr121 platform data in the mainline. The device tree property parsing code is based on the work of atmel_captouch driver. Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
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+* Freescale MPR121 Controllor
+
+Required Properties:
+- compatible: Should be "fsl,mpr121-touchkey"
+- reg: The I2C slave address of the device.
+- interrupts: The interrupt number to the cpu.
+- 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:
+- wakeup-source: Use any event on keypad as wakeup event.
+- autorepeat: Enable autorepeat feature.
+
+Example:
+
+#include "dt-bindings/input/input.h"
+
+ touchkey: mpr121@5a {
+ compatible = "fsl,mpr121-touchkey";
+ reg = <0x5a>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <28 2>;
+ autorepeat;
+ vdd-supply = <&ldo4_reg>;
+ linux,keycodes = <KEY_0>, <KEY_1>, <KEY_2>, <KEY_3>,
+ <KEY_4> <KEY_5>, <KEY_6>, <KEY_7>,
+ <KEY_8>, <KEY_9>, <KEY_A>, <KEY_B>;
+ };