ARM: dts: imx6dl-yapp4: Enable the MPR121 touchkey controller on Hydra

Add the touch keyboard present on Hydra board. The controller
is connected only using I2C lines. The interrupt line is not
available hence we use the polling mode.

Signed-off-by: Michal Vokáč <michal.vokac@ysoft.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi b/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
index e8d800f..6507bfc 100644 (file)
--- a/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
+++ b/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
@@ -4,6 +4,7 @@
 
 #include <dt-bindings/gpio/gpio.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/input/input.h>
 #include <dt-bindings/pwm/pwm.h>
 
 / {
@@ -330,6 +331,18 @@
                vcc-supply = <&sw2_reg>;
                status = "disabled";
        };
+
+       touchkeys: keys@5a {
+               compatible = "fsl,mpr121-touchkey";
+               reg = <0x5a>;
+               vdd-supply = <&sw2_reg>;
+               autorepeat;
+               linux,keycodes = <KEY_1>, <KEY_2>, <KEY_3>, <KEY_4>, <KEY_5>,
+                               <KEY_6>, <KEY_7>, <KEY_8>, <KEY_9>,
+                               <KEY_BACKSPACE>, <KEY_0>, <KEY_ENTER>;
+               poll-interval = <50>;
+               status = "disabled";
+       };
 };
 
 &iomuxc {

diff --git a/arch/arm/boot/dts/imx6dl-yapp4-hydra.dts b/arch/arm/boot/dts/imx6dl-yapp4-hydra.dts
index f979270..84c275b 100644 (file)
--- a/arch/arm/boot/dts/imx6dl-yapp4-hydra.dts
+++ b/arch/arm/boot/dts/imx6dl-yapp4-hydra.dts
@@ -45,6 +45,10 @@
        status = "okay";
 };
 
+&touchkeys {
+       status = "okay";
+};
+
 &usdhc3 {
        status = "okay";
 };