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

   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 "stm32mp15xx-dhcom.dtsi"
   7
   8 / {
   9         model = "DH Electronics STM32MP15xx DHCOM DRC02";
  10         compatible = "dh,stm32mp15xx-dhcom-drc02", "st,stm32mp1xx";
  11
  12         aliases {
  13                 serial0 = &uart4;
  14                 serial1 = &usart3;
  15                 serial2 = &uart8;
  16         };
  17
  18         chosen {
  19                 stdout-path = "serial0:115200n8";
  20         };
  21 };
  22
  23 &adc {
  24         status = "disabled";
  25 };
  26
  27 &dac {
  28         status = "disabled";
  29 };
  30
  31 &gpiob {
  32         /*
  33          * NOTE: On DRC02, the RS485_RX_En is controlled by a separate
  34          * GPIO line, however the STM32 UART driver assumes RX happens
  35          * during TX anyway and that it only controls drive enable DE
  36          * line. Hence, the RX is always enabled here.
  37          */
  38         usb-hub {
  39                 gpio-hog;
  40                 gpios = <8 GPIO_ACTIVE_HIGH>;
  41                 output-high;
  42                 line-name = "rs485-rx-en";
  43         };
  44 };
  45
  46 &gpiod {
  47         gpio-line-names = "", "", "", "",
  48                           "", "", "", "",
  49                           "", "", "", "Out1",
  50                           "Out2", "", "", "";
  51 };
  52
  53 &gpioi {
  54         gpio-line-names = "In1", "", "", "",
  55                           "", "", "", "",
  56                           "In2", "", "", "",
  57                           "", "", "", "";
  58
  59         /*
  60          * NOTE: The USB Hub on the DRC02 needs a reset signal to be
  61          * pulled high in order to be detected by the USB Controller.
  62          * This signal should be handled by USB power sequencing in
  63          * order to reset the Hub when USB bus is powered down, but
  64          * so far there is no such functionality.
  65          */
  66         usb-hub {
  67                 gpio-hog;
  68                 gpios = <2 GPIO_ACTIVE_HIGH>;
  69                 output-high;
  70                 line-name = "usb-hub-reset";
  71         };
  72 };
  73
  74 &i2c2 {
  75         pinctrl-names = "default";
  76         pinctrl-0 = <&i2c2_pins_a>;
  77         i2c-scl-rising-time-ns = <185>;
  78         i2c-scl-falling-time-ns = <20>;
  79         status = "okay";
  80         /* spare dmas for other usage */
  81         /delete-property/dmas;
  82         /delete-property/dma-names;
  83         status = "okay";
  84
  85         eeprom@50 {
  86                 compatible = "atmel,24c04";
  87                 reg = <0x50>;
  88                 pagesize = <16>;
  89         };
  90 };
  91
  92 &i2c5 { /* TP7/TP8 */
  93         pinctrl-names = "default";
  94         pinctrl-0 = <&i2c5_pins_a>;
  95         i2c-scl-rising-time-ns = <185>;
  96         i2c-scl-falling-time-ns = <20>;
  97         status = "okay";
  98         /* spare dmas for other usage */
  99         /delete-property/dmas;
 100         /delete-property/dma-names;
 101 };
 102
 103 &sdmmc3 {
 104         /*
 105          * On DRC02, the SoM does not have SDIO WiFi. The pins
 106          * are used for on-board microSD slot instead.
 107          */
 108         /delete-property/broken-cd;
 109         cd-gpios = <&gpioi 10 (GPIO_ACTIVE_LOW | GPIO_PULL_UP)>;
 110         disable-wp;
 111 };
 112
 113 &spi1 {
 114         pinctrl-names = "default";
 115         pinctrl-0 = <&spi1_pins_a>;
 116         cs-gpios = <&gpioz 3 0>;
 117         /* Use PIO for the display */
 118         /delete-property/dmas;
 119         /delete-property/dma-names;
 120         status = "disabled";    /* Enable once there is display driver */
 121         /*
 122          * Note: PF3/GPIO_A , PD6/GPIO_B , PG0/GPIO_C , PC6/GPIO_E are
 123          * also connected to the display board connector.
 124          */
 125 };
 126
 127 &usart3 {
 128         pinctrl-names = "default";
 129         pinctrl-0 = <&usart3_pins_a>;
 130         status = "okay";
 131 };
 132
 133 /*
 134  * Note: PI3 is UART1_RTS and PI5 is UART1_CTS on DRC02 (uart4 of STM32MP1),
 135  *       however the STM32MP1 pinmux cannot map them to UART4 .
 136  */
 137
 138 &uart8 {        /* RS485 */
 139         pinctrl-names = "default";
 140         pinctrl-0 = <&uart8_pins_a>;
 141         rts-gpios = <&gpioe 6 GPIO_ACTIVE_HIGH>;
 142         status = "okay";
 143 };
 144
 145 &usbh_ehci {
 146         phys = <&usbphyc_port0>;
 147         status = "okay";
 148 };
 149
 150 &usbphyc {
 151         status = "okay";
 152 };
 153
 154 &usbphyc_port0 {
 155         phy-supply = <&vdd_usb>;
 156         vdda1v1-supply = <&reg11>;
 157         vdda1v8-supply = <&reg18>;
 158 };