arch/arm/dts/imx6qdl-aristainetos2-u-boot.dtsi

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (C) 2019 Heiko Schocher <hs@denx.de>
   4  */
   5
   6 / {
   7         chosen {
   8                 u-boot,dm-pre-reloc;
   9                 stdout-path = &uart2;
  10         };
  11
  12         wdt-reboot {
  13                 compatible = "wdt-reboot";
  14                 wdt = <&wdog1>;
  15         };
  16 };
  17
  18 &uart2 {
  19         u-boot,dm-pre-reloc;
  20 };
  21
  22 &pinctrl_gpio {
  23         u-boot,dm-pre-reloc;
  24 };
  25
  26 &pinctrl_uart2 {
  27         u-boot,dm-pre-reloc;
  28 };
  29
  30 &aips2 {
  31         u-boot,dm-pre-reloc;
  32 };
  33
  34 &backlight {
  35         pwms = <&pwm1 0 300000>;
  36         default-brightness-level = <2>;
  37 };
  38
  39 /*
  40  * allow switching write protect pin by gpio,
  41  * because "pinctrl-assert-gpios" from &ecspi1 isn't handled by u-boot
  42  */
  43 &gpio2 {
  44         u-boot,dm-pre-reloc;
  45
  46         wp_spi_nor {
  47                 gpio-hog;
  48                 output-high;
  49                 gpios = <15 GPIO_ACTIVE_HIGH>;
  50         };
  51 };
  52
  53 &iomuxc {
  54         pinctrl-0 = <&pinctrl_gpio &pinctrl_gpio_fix>;
  55         u-boot,dm-pre-reloc;
  56
  57         pinctrl_gpio_fix: gpiofixgrp {
  58                 /*
  59                  * usdhc2 has a levelshifter on the carrier board Rev. DV1,
  60                  * that will automatically detect the driving direction.
  61                  * During initialisation this isn't working correctly,
  62                  * which causes DAT3 to be driven low towards the SD-card.
  63                  * This causes a SD-card enetring the SPI-Mode
  64                  * and therefore getting inaccessible until next power cycle.
  65                  * As workaround we drive the DAT3 line as GPIO and set it high.
  66                  * This makes usdhc2 unusable in u-boot, but works for the
  67                  * initialisation in Linux
  68                  */
  69                 fsl,pins = <
  70                         MX6QDL_PAD_SD2_DAT3__GPIO1_IO12 0x20000
  71                 >;
  72         };
  73 };
  74
  75 &gpio1 {
  76         usdhc_fix {
  77                 gpio-hog;
  78                 output-high;
  79                 gpios = <12 GPIO_ACTIVE_HIGH>;
  80         };
  81 };
  82
  83 &gpio3 {
  84         u-boot,dm-pre-reloc;
  85 };
  86
  87 &gpio5 {
  88         u-boot,dm-pre-reloc;
  89 };
  90
  91 &ecspi4 {
  92         u-boot,dm-pre-reloc;
  93 };
  94
  95 &flash {
  96         u-boot,dm-pre-reloc;
  97 };
  98
  99 &pinctrl_ecspi4 {
 100         u-boot,dm-pre-reloc;
 101 };