| Marek Vasut | b68e5d9 | 2020-07-25 16:50:56 +0200 | [diff] [blame^] | 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 = <®11>; |
| 157 | vdda1v8-supply = <®18>; |
| 158 | }; |