arch/arm/boot/dts/bcm2837-rpi-3-b-plus.dts

   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 };