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ARM: dts: imx7-colibri: Add touch controllers

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Add touch controller that is connected over an I2C bus.
It is disabled by default because the pins are also used for PWM,
which is the standard use for colibri boards.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
Acked-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Reviewed-by: Oleksandr Suvorov <oleksandr.suvorov@toradex.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Philippe Schenker 2019-08-27 13:18:22 +00:00 committed by Shawn Guo
parent bde07b1ede
commit e512cef81a
1 changed files with 24 additions and 0 deletions
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24
arch/arm/boot/dts/imx7-colibri-eval-v3.dtsi
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@ -145,6 +145,21 @@
&i2c4 {
status = "okay";
/*
* 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 = "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
>;
};
};