linux-kernel - [RFC PATCH v2 4/4] ARM: dts: imx6dl-yapp4: Enable MPR121 touch keypad on Hydra

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Message-Id: <1558098773-47416-5-git-send-email-michal.vokac@ysoft.com>
Date:   Fri, 17 May 2019 15:12:53 +0200
From:   Michal Vokáč <michal.vokac@...ft.com>
To:     Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     Mark Rutland <mark.rutland@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        linux-input@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Michal Vokáč <michal.vokac@...ft.com>
Subject: [RFC PATCH v2 4/4] ARM: dts: imx6dl-yapp4: Enable MPR121 touch keypad on Hydra

Enable the I2C connected touch keypad on Hydra board.
Use the polled binding as the interrupt line is not available.

Signed-off-by: Michal Vokáč <michal.vokac@...ft.com>
---
 arch/arm/boot/dts/imx6dl-yapp4-common.dtsi | 12 ++++++++++++
 arch/arm/boot/dts/imx6dl-yapp4-hydra.dts   |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi b/arch/arm/boot/dts/imx6dl-yapp4-common.dtsi
index e8d800fec637..65a670e5bd4f 100644
--- 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 +331,17 @@
 		vcc-supply = <&sw2_reg>;
 		status = "disabled";
 	};
+
+	touchkeys: keys@5a {
+		compatible = "fsl,mpr121-touchkey-polled";
+		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>;
+		status = "disabled";
+	};
 };
 
 &iomuxc {
diff --git a/arch/arm/boot/dts/imx6dl-yapp4-hydra.dts b/arch/arm/boot/dts/imx6dl-yapp4-hydra.dts
index f97927064750..84c275bfdd38 100644
--- 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";
 };
-- 
2.1.4