arch/arm/boot/dts/stm32mp15xx-dhcom-drc02.dtsi

   1 // SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
   2 /*
   3  * Copyright (C) 2020 Marek Vasut <marex@denx.de>
   4  */
   5
   6 #include <dt-bindings/input/input.h>
   7 #include <dt-bindings/pwm/pwm.h>
   8
   9 / {
  10         aliases {
  11                 serial0 = &uart4;
  12                 serial1 = &usart3;
  13                 serial2 = &uart8;
  14         };
  15
  16         chosen {
  17                 stdout-path = "serial0:115200n8";
  18         };
  19 };
  20
  21 &adc {
  22         status = "disabled";
  23 };
  24
  25 &dac {
  26         status = "disabled";
  27 };
  28
  29 &gpiob {
  30         /*
  31          * NOTE: On DRC02, the RS485_RX_En is controlled by a separate
  32          * GPIO line, however the STM32 UART driver assumes RX happens
  33          * during TX anyway and that it only controls drive enable DE
  34          * line. Hence, the RX is always enabled here.
  35          */
  36         rs485-rx-en {
  37                 gpio-hog;
  38                 gpios = <8 GPIO_ACTIVE_HIGH>;
  39                 output-low;
  40                 line-name = "rs485-rx-en";
  41         };
  42 };
  43
  44 &gpiod {
  45         gpio-line-names = "", "", "", "",
  46                           "", "", "", "",
  47                           "", "", "", "Out1",
  48                           "Out2", "", "", "";
  49 };
  50
  51 &gpioi {
  52         gpio-line-names = "In1", "", "", "",
  53                           "", "", "", "",
  54                           "In2", "", "", "",
  55                           "", "", "", "";
  56
  57         /*
  58          * NOTE: The USB Hub on the DRC02 needs a reset signal to be
  59          * pulled high in order to be detected by the USB Controller.
  60          * This signal should be handled by USB power sequencing in
  61          * order to reset the Hub when USB bus is powered down, but
  62          * so far there is no such functionality.
  63          */
  64         usb-hub {
  65                 gpio-hog;
  66                 gpios = <2 GPIO_ACTIVE_HIGH>;
  67                 output-high;
  68                 line-name = "usb-hub-reset";
  69         };
  70 };
  71
  72 &i2c2 {
  73         pinctrl-names = "default";
  74         pinctrl-0 = <&i2c2_pins_a>;
  75         i2c-scl-rising-time-ns = <185>;
  76         i2c-scl-falling-time-ns = <20>;
  77         status = "okay";
  78         /* spare dmas for other usage */
  79         /delete-property/dmas;
  80         /delete-property/dma-names;
  81         status = "okay";
  82
  83         eeprom@50 {
  84                 compatible = "atmel,24c04";
  85                 reg = <0x50>;
  86                 pagesize = <16>;
  87         };
  88 };
  89
  90 &i2c5 { /* TP7/TP8 */
  91         pinctrl-names = "default";
  92         pinctrl-0 = <&i2c5_pins_a>;
  93         i2c-scl-rising-time-ns = <185>;
  94         i2c-scl-falling-time-ns = <20>;
  95         status = "okay";
  96         /* spare dmas for other usage */
  97         /delete-property/dmas;
  98         /delete-property/dma-names;
  99 };
 100
 101 &sdmmc3 {
 102         /*
 103          * On DRC02, the SoM does not have SDIO WiFi. The pins
 104          * are used for on-board microSD slot instead.
 105          */
 106         /delete-property/broken-cd;
 107         cd-gpios = <&gpioi 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
 108         disable-wp;
 109 };
 110
 111 &spi1 {
 112         pinctrl-names = "default";
 113         pinctrl-0 = <&spi1_pins_a>;
 114         cs-gpios = <&gpioz 3 0>;
 115         /* Use PIO for the display */
 116         /delete-property/dmas;
 117         /delete-property/dma-names;
 118         status = "disabled";    /* Enable once there is display driver */
 119         /*
 120          * Note: PF3/GPIO_A , PD6/GPIO_B , PG0/GPIO_C , PC6/GPIO_E are
 121          * also connected to the display board connector.
 122          */
 123 };
 124
 125 &usart3 {
 126         pinctrl-names = "default";
 127         pinctrl-0 = <&usart3_pins_a>;
 128         status = "okay";
 129 };
 130
 131 /*
 132  * Note: PI3 is UART1_RTS and PI5 is UART1_CTS on DRC02 (uart4 of STM32MP1),
 133  *       however the STM32MP1 pinmux cannot map them to UART4 .
 134  */
 135
 136 &uart8 {        /* RS485 */
 137         linux,rs485-enabled-at-boot-time;
 138         pinctrl-names = "default";
 139         pinctrl-0 = <&uart8_pins_a>;
 140         rts-gpios = <&gpioe 6 GPIO_ACTIVE_HIGH>;
 141         status = "okay";
 142 };
 143
 144 &usbh_ehci {
 145         phys = <&usbphyc_port0>;
 146         status = "okay";
 147 };
 148
 149 &usbphyc {
 150         status = "okay";
 151 };
 152
 153 &usbphyc_port0 {
 154         phy-supply = <&vdd_usb>;
 155         vdda1v1-supply = <&reg11>;
 156         vdda1v8-supply = <&reg18>;
 157 };