Commit 179141ca authored by Oleksij Rempel's avatar Oleksij Rempel Committed by Shawn Guo
Browse files

ARM: dts: imx6: skov: migrate to resistive-adc-touch 



Start to use more generic resistive-adc-touch node. ti,tsc2046 is an ADC
controller used for resistive touchscreen. So, define it as ADC and
attach resistive-adc-touch to it.

Signed-off-by: default avatarOleksij Rempel <o.rempel@pengutronix.de>
Signed-off-by: default avatarShawn Guo <shawnguo@kernel.org>
parent fd2dd707

arch/arm/boot/dts/imx6qdl-skov-cpu-revc.dtsi

+45 −20
Original line number Diff line number Diff line
@@ -2,35 +2,60 @@ 
//

// Copyright (C) 2020 Pengutronix, Ulrich Oelmann <kernel@pengutronix.de>



/ {

	touchscreen {

		compatible = "resistive-adc-touch";

		io-channels = <&adc_ts 1>, <&adc_ts 3>, <&adc_ts 4>, <&adc_ts 5>;

		io-channel-names = "y", "z1", "z2", "x";

		touchscreen-min-pressure = <65000>;

		touchscreen-inverted-y;

		touchscreen-swapped-x-y;

		touchscreen-x-plate-ohms = <300>;

		touchscreen-y-plate-ohms = <800>;

	};

};



&ecspi4 {

	pinctrl-names = "default";

	pinctrl-0 = <&pinctrl_ecspi4>;

	cs-gpios = <&gpio3 20 GPIO_ACTIVE_LOW>;

	status = "okay";



	touchscreen@0 {

		pinctrl-names = "default";

		pinctrl-0 = <&pinctrl_touch>;

		compatible = "ti,tsc2046";

	adc_ts: adc@0 {

		compatible = "ti,tsc2046e-adc";

		reg = <0>;

		pinctrl-0 = <&pinctrl_touch>;

		pinctrl-names ="default";

		spi-max-frequency = <1000000>;

		interrupts-extended = <&gpio3 19 IRQ_TYPE_LEVEL_LOW>;

		vcc-supply = <&reg_3v3>;

		pendown-gpio = <&gpio3 19 GPIO_ACTIVE_LOW>;

		ti,x-plate-ohms = /bits/ 16 <850>;

		ti,y-plate-ohms = /bits/ 16 <295>;

		ti,pressure-min = /bits/ 16 <2>;

		ti,pressure-max = /bits/ 16 <1500>;

		ti,vref-mv = /bits/ 16 <3300>;

		ti,settle-delay-usec = /bits/ 16 <15>;

		ti,vref-delay-usecs = /bits/ 16 <0>;

		ti,penirq-recheck-delay-usecs = /bits/ 16 <100>;

		ti,debounce-max = /bits/ 16 <100>;

		ti,debounce-tol = /bits/ 16 <(~0)>;

		ti,debounce-rep = /bits/ 16 <4>;

		touchscreen-swapped-x-y;

		touchscreen-inverted-y;

		wakeup-source;

		#io-channel-cells = <1>;



		#address-cells = <1>;

		#size-cells = <0>;



		channel@1 {

			reg = <1>;

			settling-time-us = <700>;

			oversampling-ratio = <5>;

		};



		channel@3 {

			reg = <3>;

			settling-time-us = <700>;

			oversampling-ratio = <5>;

		};



		channel@4 {

			reg = <4>;

			settling-time-us = <700>;

			oversampling-ratio = <5>;

		};



		channel@5 {

			reg = <5>;

			settling-time-us = <700>;

			oversampling-ratio = <5>;

		};

	};

};