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      1 // SPDX-License-Identifier: GPL-2.0
      2 /dts-v1/;
      3 #include "bcm2837.dtsi"
      4 #include "bcm2836-rpi.dtsi"
      5 #include "bcm283x-rpi-lan7515.dtsi"
      6 #include "bcm283x-rpi-usb-host.dtsi"
      7 
      8 / {
      9 	compatible = "raspberrypi,3-model-b-plus", "brcm,bcm2837";
     10 	model = "Raspberry Pi 3 Model B+";
     11 
     12 	chosen {
     13 		/* 8250 auxiliary UART instead of pl011 */
     14 		stdout-path = "serial1:115200n8";
     15 	};
     16 
     17 	memory@0 {
     18 		device_type = "memory";
     19 		reg = <0 0x40000000>;
     20 	};
     21 
     22 	leds {
     23 		led-act {
     24 			gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
     25 		};
     26 
     27 		led-pwr {
     28 			label = "PWR";
     29 			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
     30 			default-state = "keep";
     31 			linux,default-trigger = "default-on";
     32 		};
     33 	};
     34 
     35 	wifi_pwrseq: wifi-pwrseq {
     36 		compatible = "mmc-pwrseq-simple";
     37 		reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
     38 	};
     39 };
     40 
     41 &firmware {
     42 	expgpio: gpio {
     43 		compatible = "raspberrypi,firmware-gpio";
     44 		gpio-controller;
     45 		#gpio-cells = <2>;
     46 		gpio-line-names = "BT_ON",
     47 				  "WL_ON",
     48 				  "STATUS_LED_R",
     49 				  "LAN_RUN",
     50 				  "",
     51 				  "CAM_GPIO0",
     52 				  "CAM_GPIO1",
     53 				  "";
     54 		status = "okay";
     55 	};
     56 };
     57 
     58 &gpio {
     59 	/*
     60 	 * Taken from rpi_SCH_3bplus_1p0_reduced.pdf and
     61 	 * the official GPU firmware DT blob.
     62 	 *
     63 	 * Legend:
     64 	 * "NC" = not connected (no rail from the SoC)
     65 	 * "FOO" = GPIO line named "FOO" on the schematic
     66 	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
     67 	 */
     68 	gpio-line-names = "ID_SDA",
     69 			  "ID_SCL",
     70 			  "SDA1",
     71 			  "SCL1",
     72 			  "GPIO_GCLK",
     73 			  "GPIO5",
     74 			  "GPIO6",
     75 			  "SPI_CE1_N",
     76 			  "SPI_CE0_N",
     77 			  "SPI_MISO",
     78 			  "SPI_MOSI",
     79 			  "SPI_SCLK",
     80 			  "GPIO12",
     81 			  "GPIO13",
     82 			  /* Serial port */
     83 			  "TXD1",
     84 			  "RXD1",
     85 			  "GPIO16",
     86 			  "GPIO17",
     87 			  "GPIO18",
     88 			  "GPIO19",
     89 			  "GPIO20",
     90 			  "GPIO21",
     91 			  "GPIO22",
     92 			  "GPIO23",
     93 			  "GPIO24",
     94 			  "GPIO25",
     95 			  "GPIO26",
     96 			  "GPIO27",
     97 			  "HDMI_HPD_N",
     98 			  "STATUS_LED_G",
     99 			  /* Used by BT module */
    100 			  "CTS0",
    101 			  "RTS0",
    102 			  "TXD0",
    103 			  "RXD0",
    104 			  /* Used by Wifi */
    105 			  "SD1_CLK",
    106 			  "SD1_CMD",
    107 			  "SD1_DATA0",
    108 			  "SD1_DATA1",
    109 			  "SD1_DATA2",
    110 			  "SD1_DATA3",
    111 			  "PWM0_OUT",
    112 			  "PWM1_OUT",
    113 			  "ETHCLK",
    114 			  "WIFI_CLK",
    115 			  "SDA0",
    116 			  "SCL0",
    117 			  "SMPS_SCL",
    118 			  "SMPS_SDA",
    119 			  /* Used by SD Card */
    120 			  "SD_CLK_R",
    121 			  "SD_CMD_R",
    122 			  "SD_DATA0_R",
    123 			  "SD_DATA1_R",
    124 			  "SD_DATA2_R",
    125 			  "SD_DATA3_R";
    126 };
    127 
    128 &hdmi {
    129 	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
    130 	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
    131 	status = "okay";
    132 };
    133 
    134 &pwm {
    135 	pinctrl-names = "default";
    136 	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
    137 	status = "okay";
    138 };
    139 
    140 /* SDHCI is used to control the SDIO for wireless */
    141 &sdhci {
    142 	#address-cells = <1>;
    143 	#size-cells = <0>;
    144 	pinctrl-names = "default";
    145 	pinctrl-0 = <&emmc_gpio34>;
    146 	status = "okay";
    147 	bus-width = <4>;
    148 	non-removable;
    149 	mmc-pwrseq = <&wifi_pwrseq>;
    150 
    151 	brcmf: wifi@1 {
    152 		reg = <1>;
    153 		compatible = "brcm,bcm4329-fmac";
    154 	};
    155 };
    156 
    157 /* SDHOST is used to drive the SD card */
    158 &sdhost {
    159 	pinctrl-names = "default";
    160 	pinctrl-0 = <&sdhost_gpio48>;
    161 	status = "okay";
    162 	bus-width = <4>;
    163 };
    164 
    165 /* uart0 communicates with the BT module */
    166 &uart0 {
    167 	pinctrl-names = "default";
    168 	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
    169 	status = "okay";
    170 
    171 	bluetooth {
    172 		compatible = "brcm,bcm43438-bt";
    173 		max-speed = <2000000>;
    174 		shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
    175 	};
    176 };
    177 
    178 /* uart1 is mapped to the pin header */
    179 &uart1 {
    180 	pinctrl-names = "default";
    181 	pinctrl-0 = <&uart1_gpio14>;
    182 	status = "okay";
    183 };
    184