[PATCH v4 08/21] ARM: dts: imx7-colibri: Add touch controllers

Philippe Schenker
2019-08-12T14:21:58Z

Add touch controller that is connected over an I2C bus.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>

---

Changes in v4:
- Add Marcel Ziswiler's Ack

Changes in v3:
- Fix commit message

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/dts/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 = "okay";

+ /*
+ * Touchscreen is using SODIMM 28/30, also used for PWM, PWM<C>,
+ * aka pwm2, pwm3. so if you enable touchscreen, disable the pwms
+ */
+ touchscreen@4a {
+ compatible = "atmel,maxtouch";
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_gpiotouch>;
+ reg = <0x4a>;
+ interrupt-parent = <&gpio1>;
+ interrupts = <9 IRQ_TYPE_EDGE_FALLING>; /* SODIMM 28 */
+ reset-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>; /* SODIMM 30 */
+ status = "disabled";
+ };
+
/* M41T0M6 real time clock on carrier board */
rtc: m41t0m6@68 {
compatible = "st,m41t0";
@@ -200,3 +215,12 @@
vmmc-supply = <&reg_3v3>;
status = "okay";
};
+
+&iomuxc {
+ pinctrl_gpiotouch: touchgpios {
+ fsl,pins = <
+ MX7D_PAD_GPIO1_IO09__GPIO1_IO9 0x74
+ MX7D_PAD_GPIO1_IO10__GPIO1_IO10 0x14
+ >;
+ };
+};
--
2.22.0