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From:   Philippe Schenker <philippe.schenker@toradex.com>
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        Max Krummenacher <max.krummenacher@toradex.com>,
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Subject: [PATCH v2 08/20] ARM: dts: imx7-colibri: Add touch controllers
Thread-Topic: [PATCH v2 08/20] ARM: dts: imx7-colibri: Add touch controllers
Thread-Index: AQHVR5zSfqDLO7YI3kGn89/J0dQlQg==
Date:   Wed, 31 Jul 2019 12:38:14 +0000
Message-ID: <20190731123750.25670-9-philippe.schenker@toradex.com>
References: <20190731123750.25670-1-philippe.schenker@toradex.com>
In-Reply-To: <20190731123750.25670-1-philippe.schenker@toradex.com>
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Add atmel mxt multitouch controller and TouchRevolution multitouch
controller which are connected over an I2C bus.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>

---

Changes in v2:
- Deleted touchrevolution downstream stuff
- Use generic node name
- Better comment

 arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi | 24 +++++++++++++++++++++
 1 file changed, 24 insertions(+)

diff --git a/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi b/arch/arm/boot/dt=
s/imx7-colibri-eval-v3.dtsi
index d4dbc4fc1adf..576dec9ff81c 100644
--- a/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
+++ b/arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
@@ -145,6 +145,21 @@
 &i2c4 {
 	status =3D "okay";
=20
+	/*
+	 * Touchscreen is using SODIMM 28/30, also used for PWM<B>, PWM<C>,
+	 * aka pwm2, pwm3. so if you enable touchscreen, disable the pwms
+	 */
+	touchscreen@4a {
+		compatible =3D "atmel,maxtouch";
+		pinctrl-names =3D "default";
+		pinctrl-0 =3D <&pinctrl_gpiotouch>;
+		reg =3D <0x4a>;
+		interrupt-parent =3D <&gpio1>;
+		interrupts =3D <9 IRQ_TYPE_EDGE_FALLING>;		/* SODIMM 28 */
+		reset-gpios =3D <&gpio1 10 GPIO_ACTIVE_HIGH>;	/* SODIMM 30 */
+		status =3D "disabled";
+	};
+
 	/* M41T0M6 real time clock on carrier board */
 	rtc: m41t0m6@68 {
 		compatible =3D "st,m41t0";
@@ -200,3 +215,12 @@
 	vmmc-supply =3D <&reg_3v3>;
 	status =3D "okay";
 };
+
+&iomuxc {
+	pinctrl_gpiotouch: touchgpios {
+		fsl,pins =3D <
+			MX7D_PAD_GPIO1_IO09__GPIO1_IO9		0x74
+			MX7D_PAD_GPIO1_IO10__GPIO1_IO10		0x14
+		>;
+	};
+};
--=20
2.22.0