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 <[email protected]> Signed-off-by: Shawn Guo <[email protected]>
vieko · Oct 25, 2019 · 764b5b5 · 764b5b5
1 parent 7e28fc4
commit 764b5b5
Show file tree

Hide file tree

Showing 2 changed files with 17 additions and 0 deletions.
diff --git 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
@@ -45,6 +45,10 @@
 	status = "okay";
 };
 
+&touchkeys {
+	status = "okay";
+};
+
 &usdhc3 {
 	status = "okay";
 };