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      1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
      2 //
      3 // Copyright (C) 2020 Pengutronix, Ulrich Oelmann <kernel (a] pengutronix.de>
      4 
      5 &ecspi4 {
      6 	pinctrl-names = "default";
      7 	pinctrl-0 = <&pinctrl_ecspi4>;
      8 	cs-gpios = <&gpio3 20 GPIO_ACTIVE_LOW>;
      9 	status = "okay";
     10 
     11 	touchscreen@0 {
     12 		pinctrl-names = "default";
     13 		pinctrl-0 = <&pinctrl_touch>;
     14 		compatible = "ti,tsc2046";
     15 		reg = <0>;
     16 		spi-max-frequency = <1000000>;
     17 		interrupts-extended = <&gpio3 19 IRQ_TYPE_LEVEL_LOW>;
     18 		vcc-supply  = <&reg_3v3>;
     19 		pendown-gpio = <&gpio3 19 GPIO_ACTIVE_LOW>;
     20 		ti,x-plate-ohms = /bits/ 16 <850>;
     21 		ti,y-plate-ohms = /bits/ 16 <295>;
     22 		ti,pressure-min = /bits/ 16 <2>;
     23 		ti,pressure-max = /bits/ 16 <1500>;
     24 		ti,vref-mv	= /bits/ 16 <3300>;
     25 		ti,settle-delay-usec = /bits/ 16 <15>;
     26 		ti,vref-delay-usecs = /bits/ 16 <0>;
     27 		ti,penirq-recheck-delay-usecs = /bits/ 16 <100>;
     28 		ti,debounce-max = /bits/ 16 <100>;
     29 		ti,debounce-tol = /bits/ 16 <(~0)>;
     30 		ti,debounce-rep = /bits/ 16 <4>;
     31 		touchscreen-swapped-x-y;
     32 		touchscreen-inverted-y;
     33 		wakeup-source;
     34 	};
     35 };
     36 
     37 &iomuxc {
     38 	pinctrl_ecspi4: ecspi4grp {
     39 		fsl,pins = <
     40 			MX6QDL_PAD_EIM_D28__ECSPI4_MOSI			0x100b1
     41 			MX6QDL_PAD_EIM_D22__ECSPI4_MISO			0x000b1
     42 			MX6QDL_PAD_EIM_D21__ECSPI4_SCLK			0x000b1
     43 			/* *no* external pull up */
     44 			MX6QDL_PAD_EIM_D20__GPIO3_IO20		0x40000058
     45 		>;
     46 	};
     47 
     48 	pinctrl_touch: touchgrp {
     49 		fsl,pins = <
     50 			/* external pull up */
     51 			MX6QDL_PAD_EIM_D19__GPIO3_IO19			0x10040
     52 		>;
     53 	};
     54 };
     55