The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/src/arm/imx6qdl-skov-cpu-revc.dtsi

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    1 // SPDX-License-Identifier: (GPL-2.0 OR MIT)
    2 //
    3 // Copyright (C) 2020 Pengutronix, Ulrich Oelmann <kernel@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 };

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