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/omap3-overo-common-lcd35.dtsi

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    1 // SPDX-License-Identifier: GPL-2.0-only
    2 /*
    3  * Copyright (C) 2014 Florian Vaussard, EPFL Mobots group
    4  */
    5 
    6 /*
    7  * 4.3'' LCD panel output for some Gumstix Overo boards (Gallop43, Chestnut43)
    8  */
    9 
   10 &omap3_pmx_core {
   11         dss_dpi_pins: pinmux_dss_dpi_pins {
   12                 pinctrl-single,pins = <
   13                         OMAP3_CORE1_IOPAD(0x20d4, PIN_OUTPUT | MUX_MODE0)       /* dss_pclk.dss_pclk */
   14                         OMAP3_CORE1_IOPAD(0x20d6, PIN_OUTPUT | MUX_MODE0)       /* dss_hsync.dss_hsync */
   15                         OMAP3_CORE1_IOPAD(0x20d8, PIN_OUTPUT | MUX_MODE0)       /* dss_vsync.dss_vsync */
   16                         OMAP3_CORE1_IOPAD(0x20da, PIN_OUTPUT | MUX_MODE0)       /* dss_acbias.dss_acbias */
   17                         OMAP3_CORE1_IOPAD(0x20dc, PIN_OUTPUT | MUX_MODE0)       /* dss_data0.dss_data0 */
   18                         OMAP3_CORE1_IOPAD(0x20de, PIN_OUTPUT | MUX_MODE0)       /* dss_data1.dss_data1 */
   19                         OMAP3_CORE1_IOPAD(0x20e0, PIN_OUTPUT | MUX_MODE0)       /* dss_data2.dss_data2 */
   20                         OMAP3_CORE1_IOPAD(0x20e2, PIN_OUTPUT | MUX_MODE0)       /* dss_data3.dss_data3 */
   21                         OMAP3_CORE1_IOPAD(0x20e4, PIN_OUTPUT | MUX_MODE0)       /* dss_data4.dss_data4 */
   22                         OMAP3_CORE1_IOPAD(0x20e6, PIN_OUTPUT | MUX_MODE0)       /* dss_data5.dss_data5 */
   23                         OMAP3_CORE1_IOPAD(0x20e8, PIN_OUTPUT | MUX_MODE0)       /* dss_data6.dss_data6 */
   24                         OMAP3_CORE1_IOPAD(0x20ea, PIN_OUTPUT | MUX_MODE0)       /* dss_data7.dss_data7 */
   25                         OMAP3_CORE1_IOPAD(0x20ec, PIN_OUTPUT | MUX_MODE0)       /* dss_data8.dss_data8 */
   26                         OMAP3_CORE1_IOPAD(0x20ee, PIN_OUTPUT | MUX_MODE0)       /* dss_data9.dss_data9 */
   27                         OMAP3_CORE1_IOPAD(0x20f0, PIN_OUTPUT | MUX_MODE0)       /* dss_data10.dss_data10 */
   28                         OMAP3_CORE1_IOPAD(0x20f2, PIN_OUTPUT | MUX_MODE0)       /* dss_data11.dss_data11 */
   29                         OMAP3_CORE1_IOPAD(0x20f4, PIN_OUTPUT | MUX_MODE0)       /* dss_data12.dss_data12 */
   30                         OMAP3_CORE1_IOPAD(0x20f6, PIN_OUTPUT | MUX_MODE0)       /* dss_data13.dss_data13 */
   31                         OMAP3_CORE1_IOPAD(0x20f8, PIN_OUTPUT | MUX_MODE0)       /* dss_data14.dss_data14 */
   32                         OMAP3_CORE1_IOPAD(0x20fa, PIN_OUTPUT | MUX_MODE0)       /* dss_data15.dss_data15 */
   33                         OMAP3_CORE1_IOPAD(0x20fc, PIN_OUTPUT | MUX_MODE0)       /* dss_data16.dss_data16 */
   34                         OMAP3_CORE1_IOPAD(0x20fe, PIN_OUTPUT | MUX_MODE0)       /* dss_data17.dss_data17 */
   35                         OMAP3_CORE1_IOPAD(0x2100, PIN_OUTPUT | MUX_MODE0)       /* dss_data18.dss_data18 */
   36                         OMAP3_CORE1_IOPAD(0x2102, PIN_OUTPUT | MUX_MODE0)       /* dss_data19.dss_data19 */
   37                         OMAP3_CORE1_IOPAD(0x2104, PIN_OUTPUT | MUX_MODE0)       /* dss_data20.dss_data20 */
   38                         OMAP3_CORE1_IOPAD(0x2106, PIN_OUTPUT | MUX_MODE0)       /* dss_data21.dss_data21 */
   39                         OMAP3_CORE1_IOPAD(0x2108, PIN_OUTPUT | MUX_MODE0)       /* dss_data22.dss_data22 */
   40                         OMAP3_CORE1_IOPAD(0x210a, PIN_OUTPUT | MUX_MODE0)       /* dss_data23.dss_data23 */
   41                 >;
   42         };
   43 
   44         lb035_pins: pinmux_lb035_pins {
   45                 pinctrl-single,pins = <
   46                         OMAP3_CORE1_IOPAD(0x2174, PIN_OUTPUT | MUX_MODE4)       /* uart2_cts.gpio_144 */
   47                 >;
   48         };
   49 
   50         backlight_pins: pinmux_backlight_pins {
   51                 pinctrl-single,pins = <
   52                         OMAP3_CORE1_IOPAD(0x2176, PIN_OUTPUT | MUX_MODE4)       /* uart2_rts.gpio_145 */
   53                 >;
   54         };
   55 
   56         mcspi1_pins: pinmux_mcspi1_pins {
   57                 pinctrl-single,pins = <
   58                         OMAP3_CORE1_IOPAD(0x21c8, PIN_INPUT | MUX_MODE0)        /* mcspi1_clk.mcspi1_clk */
   59                         OMAP3_CORE1_IOPAD(0x21ca, PIN_INPUT | MUX_MODE0)        /* mcspi1_simo.mcspi1_simo */
   60                         OMAP3_CORE1_IOPAD(0x21cc, PIN_INPUT | MUX_MODE0)        /* mcspi1_somi.mcspi1_somi */
   61                         OMAP3_CORE1_IOPAD(0x21ce, PIN_INPUT | MUX_MODE0)        /* mcspi1_cs0.mcspi1_cs0 */
   62                         OMAP3_CORE1_IOPAD(0x21d0, PIN_INPUT | MUX_MODE0)        /* mcspi1_cs1.mcspi1_cs1 */
   63                 >;
   64         };
   65 
   66         ads7846_pins: pinmux_ads7846_pins {
   67                 pinctrl-single,pins = <
   68                         OMAP3_CORE1_IOPAD(0x2138, PIN_INPUT_PULLDOWN | MUX_MODE4)       /* csi2_dx1.gpio_114 */
   69                 >;
   70         };
   71 };
   72 
   73 /* Needed to power the DPI pins */
   74 &vpll2 {
   75         regulator-always-on;
   76 };
   77 
   78 &dss {
   79         status = "okay";
   80 
   81         pinctrl-names = "default";
   82         pinctrl-0 = <&dss_dpi_pins>;
   83 
   84         port {
   85                 dpi_out: endpoint {
   86                         remote-endpoint = <&lcd_in>;
   87                         data-lines = <24>;
   88                 };
   89         };
   90 };
   91 
   92 / {
   93         aliases {
   94                 display0 = &lcd0;
   95         };
   96 
   97         ads7846reg: ads7846-reg {
   98                 compatible = "regulator-fixed";
   99                 regulator-name = "ads7846-reg";
  100                 regulator-min-microvolt = <3300000>;
  101                 regulator-max-microvolt = <3300000>;
  102         };
  103 
  104         backlight {
  105                 compatible = "gpio-backlight";
  106                 
  107                 pinctrl-names = "default";
  108                 pinctrl-0 = <&backlight_pins>;
  109                 gpios = <&gpio5 17 GPIO_ACTIVE_HIGH>;           /* gpio_145 */
  110 
  111                 default-on;
  112         };
  113 };
  114 
  115 &mcspi1 {
  116         pinctrl-names = "default";
  117         pinctrl-0 = <&mcspi1_pins>;
  118 
  119         lcd0: display@1 {
  120                 compatible = "lgphilips,lb035q02";
  121                 label = "lcd35";
  122 
  123                 reg = <1>;                                      /* CS1 */
  124                 spi-max-frequency = <500000>;
  125                 spi-cpol;
  126                 spi-cpha;
  127 
  128                 pinctrl-names = "default";
  129                 pinctrl-0 = <&lb035_pins>;
  130                 enable-gpios = <&gpio5 16 GPIO_ACTIVE_HIGH>;    /* gpio_144 */
  131 
  132                 port {
  133                         lcd_in: endpoint {
  134                                 remote-endpoint = <&dpi_out>;
  135                         };
  136                 };
  137         };
  138 
  139         /* touch controller */
  140         ads7846@0 {
  141                 pinctrl-names = "default";
  142                 pinctrl-0 = <&ads7846_pins>;
  143 
  144                 compatible = "ti,ads7846";
  145                 vcc-supply = <&ads7846reg>;
  146 
  147                 reg = <0>;                              /* CS0 */
  148                 spi-max-frequency = <1500000>;
  149 
  150                 interrupt-parent = <&gpio4>;
  151                 interrupts = <18 0>;                    /* gpio_114 */
  152                 pendown-gpio = <&gpio4 18 GPIO_ACTIVE_HIGH>;
  153 
  154                 ti,x-min = /bits/ 16 <0x0>;
  155                 ti,x-max = /bits/ 16 <0x0fff>;
  156                 ti,y-min = /bits/ 16 <0x0>;
  157                 ti,y-max = /bits/ 16 <0x0fff>;
  158                 ti,x-plate-ohms = /bits/ 16 <180>;
  159                 ti,pressure-max = /bits/ 16 <255>;
  160 
  161                 wakeup-source;
  162         };
  163 };

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