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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 | // SPDX-License-Identifier: GPL-2.0 /dts-v1/; #include "bcm2837.dtsi" #include "bcm2836-rpi.dtsi" #include "bcm283x-rpi-smsc9514.dtsi" #include "bcm283x-rpi-usb-host.dtsi" #include "bcm283x-rpi-wifi-bt.dtsi" / { compatible = "raspberrypi,3-model-b", "brcm,bcm2837"; model = "Raspberry Pi 3 Model B"; chosen { /* 8250 auxiliary UART instead of pl011 */ stdout-path = "serial1:115200n8"; }; memory@0 { device_type = "memory"; reg = <0 0x40000000>; }; leds { led-act { gpios = <&expgpio 2 GPIO_ACTIVE_HIGH>; }; }; }; &bt { shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>; }; &firmware { expgpio: gpio { compatible = "raspberrypi,firmware-gpio"; gpio-controller; #gpio-cells = <2>; gpio-line-names = "BT_ON", "WL_ON", "STATUS_LED", "LAN_RUN", "HDMI_HPD_N", "CAM_GPIO0", "CAM_GPIO1", "PWR_LOW_N"; status = "okay"; }; }; &gpio { /* * Taken from rpi_SCH_3b_1p2_reduced.pdf and * the official GPU firmware DT blob. * * Legend: * "FOO" = GPIO line named "FOO" on the schematic * "FOO_N" = GPIO line named "FOO" on schematic, active low */ gpio-line-names = "ID_SDA", "ID_SCL", "SDA1", "SCL1", "GPIO_GCLK", "GPIO5", "GPIO6", "SPI_CE1_N", "SPI_CE0_N", "SPI_MISO", "SPI_MOSI", "SPI_SCLK", "GPIO12", "GPIO13", /* Serial port */ "TXD1", "RXD1", "GPIO16", "GPIO17", "GPIO18", "GPIO19", "GPIO20", "GPIO21", "GPIO22", "GPIO23", "GPIO24", "GPIO25", "GPIO26", "GPIO27", "", /* GPIO 28 */ "LAN_RUN_BOOT", /* Used by BT module */ "CTS0", "RTS0", "TXD0", "RXD0", /* Used by Wifi */ "SD1_CLK", "SD1_CMD", "SD1_DATA0", "SD1_DATA1", "SD1_DATA2", "SD1_DATA3", "PWM0_OUT", "PWM1_OUT", "ETH_CLK", "WIFI_CLK", "SDA0", "SCL0", "SMPS_SCL", "SMPS_SDA", /* Used by SD Card */ "SD_CLK_R", "SD_CMD_R", "SD_DATA0_R", "SD_DATA1_R", "SD_DATA2_R", "SD_DATA3_R"; }; &pwm { pinctrl-names = "default"; pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>; status = "okay"; }; &hdmi { hpd-gpios = <&expgpio 4 GPIO_ACTIVE_LOW>; power-domains = <&power RPI_POWER_DOMAIN_HDMI>; status = "okay"; }; /* uart0 communicates with the BT module */ &uart0 { pinctrl-names = "default"; pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>; }; /* uart1 is mapped to the pin header */ &uart1 { pinctrl-names = "default"; pinctrl-0 = <&uart1_gpio14>; status = "okay"; }; /* SDHOST is used to drive the SD card */ &sdhost { pinctrl-names = "default"; pinctrl-0 = <&sdhost_gpio48>; status = "okay"; bus-width = <4>; }; &wifi_pwrseq { reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>; }; |