168 lines
3.4 KiB
Plaintext
168 lines
3.4 KiB
Plaintext
// SPDX-License-Identifier: GPL-2.0+ OR BSD-3-Clause
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/*
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* Copyright (C) 2020 Marek Vasut <marex@denx.de>
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*/
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#include "stm32mp15xx-dhcom.dtsi"
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/ {
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model = "DH Electronics STM32MP15xx DHCOM DRC02";
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compatible = "dh,stm32mp15xx-dhcom-drc02", "st,stm32mp1xx";
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aliases {
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serial0 = &uart4;
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serial1 = &usart3;
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serial2 = &uart8;
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};
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chosen {
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stdout-path = "serial0:115200n8";
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};
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};
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&adc {
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status = "disabled";
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};
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&dac {
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status = "disabled";
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};
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&gpiob {
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/*
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* NOTE: On DRC02, the RS485_RX_En is controlled by a separate
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* GPIO line, however the STM32 UART driver assumes RX happens
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* during TX anyway and that it only controls drive enable DE
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* line. Hence, the RX is always enabled here.
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*/
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usb-hub {
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gpio-hog;
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gpios = <8 GPIO_ACTIVE_HIGH>;
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output-high;
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line-name = "rs485-rx-en";
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};
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};
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&gpiod {
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gpio-line-names = "", "", "", "",
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"", "", "", "",
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"", "", "", "Out1",
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"Out2", "", "", "";
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};
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&gpioi {
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gpio-line-names = "In1", "", "", "",
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"", "", "", "",
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"In2", "", "", "",
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"", "", "", "";
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/*
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* NOTE: The USB Hub on the DRC02 needs a reset signal to be
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* pulled high in order to be detected by the USB Controller.
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* This signal should be handled by USB power sequencing in
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* order to reset the Hub when USB bus is powered down, but
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* so far there is no such functionality.
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*/
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usb-hub {
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gpio-hog;
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gpios = <2 GPIO_ACTIVE_HIGH>;
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output-high;
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line-name = "usb-hub-reset";
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};
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};
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&i2c2 {
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pinctrl-names = "default";
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pinctrl-0 = <&i2c2_pins_a>;
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i2c-scl-rising-time-ns = <185>;
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i2c-scl-falling-time-ns = <20>;
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status = "okay";
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/* spare dmas for other usage */
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/delete-property/dmas;
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/delete-property/dma-names;
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status = "okay";
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eeprom@50 {
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compatible = "atmel,24c04";
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reg = <0x50>;
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pagesize = <16>;
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};
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};
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&i2c5 { /* TP7/TP8 */
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pinctrl-names = "default";
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pinctrl-0 = <&i2c5_pins_a>;
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i2c-scl-rising-time-ns = <185>;
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i2c-scl-falling-time-ns = <20>;
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status = "okay";
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/* spare dmas for other usage */
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/delete-property/dmas;
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/delete-property/dma-names;
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};
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&sdmmc3 {
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/*
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* On DRC02, the SoM does not have SDIO WiFi. The pins
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* are used for on-board microSD slot instead.
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*/
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pinctrl-names = "default", "opendrain", "sleep";
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pinctrl-0 = <&sdmmc3_b4_pins_a>;
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pinctrl-1 = <&sdmmc3_b4_od_pins_a>;
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pinctrl-2 = <&sdmmc3_b4_sleep_pins_a>;
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cd-gpios = <&gpioi 10 GPIO_ACTIVE_HIGH>;
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disable-wp;
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st,neg-edge;
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bus-width = <4>;
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vmmc-supply = <&v3v3>;
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vqmmc-supply = <&v3v3>;
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mmc-ddr-3_3v;
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status = "okay";
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};
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&spi1 {
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pinctrl-names = "default";
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pinctrl-0 = <&spi1_pins_a>;
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cs-gpios = <&gpioz 3 0>;
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/* Use PIO for the display */
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/delete-property/dmas;
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/delete-property/dma-names;
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status = "disabled"; /* Enable once there is display driver */
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/*
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* Note: PF3/GPIO_A , PD6/GPIO_B , PG0/GPIO_C , PC6/GPIO_E are
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* also connected to the display board connector.
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*/
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};
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&usart3 {
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pinctrl-names = "default";
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pinctrl-0 = <&usart3_pins_a>;
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status = "okay";
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};
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/*
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* Note: PI3 is UART1_RTS and PI5 is UART1_CTS on DRC02 (uart4 of STM32MP1),
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* however the STM32MP1 pinmux cannot map them to UART4 .
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*/
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&uart8 { /* RS485 */
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pinctrl-names = "default";
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pinctrl-0 = <&uart8_pins_a>;
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rts-gpios = <&gpioe 6 GPIO_ACTIVE_HIGH>;
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status = "okay";
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};
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&usbh_ehci {
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phys = <&usbphyc_port0>;
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status = "okay";
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};
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&usbphyc {
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status = "okay";
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};
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&usbphyc_port0 {
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phy-supply = <&vdd_usb>;
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vdda1v1-supply = <®11>;
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vdda1v8-supply = <®18>;
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};
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