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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /dts-v1/;
   3 #include "bcm2837.dtsi"
   4 #include "bcm2836-rpi.dtsi"
   5 #include "bcm283x-rpi-smsc9514.dtsi"
   6 #include "bcm283x-rpi-usb-host.dtsi"
   7 #include "bcm283x-rpi-wifi-bt.dtsi"
   8
   9 / {
  10         compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
  11         model = "Raspberry Pi 3 Model B";
  12
  13         chosen {
  14                 /* 8250 auxiliary UART instead of pl011 */
  15                 stdout-path = "serial1:115200n8";
  16         };
  17
  18         memory@0 {
  19                 device_type = "memory";
  20                 reg = <0 0x40000000>;
  21         };
  22
  23         leds {
  24                 led-act {
  25                         gpios = <&expgpio 2 GPIO_ACTIVE_HIGH>;
  26                 };
  27         };
  28 };
  29
  30 &bt {
  31         shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
  32 };
  33
  34 &firmware {
  35         expgpio: gpio {
  36                 compatible = "raspberrypi,firmware-gpio";
  37                 gpio-controller;
  38                 #gpio-cells = <2>;
  39                 gpio-line-names = "BT_ON",
  40                                   "WL_ON",
  41                                   "STATUS_LED",
  42                                   "LAN_RUN",
  43                                   "HDMI_HPD_N",
  44                                   "CAM_GPIO0",
  45                                   "CAM_GPIO1",
  46                                   "PWR_LOW_N";
  47                 status = "okay";
  48         };
  49 };
  50
  51 &gpio {
  52         /*
  53          * Taken from rpi_SCH_3b_1p2_reduced.pdf and
  54          * the official GPU firmware DT blob.
  55          *
  56          * Legend:
  57          * "NC" = not connected (no rail from the SoC)
  58          * "FOO" = GPIO line named "FOO" on the schematic
  59          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  60          */
  61         gpio-line-names = "ID_SDA",
  62                           "ID_SCL",
  63                           "SDA1",
  64                           "SCL1",
  65                           "GPIO_GCLK",
  66                           "GPIO5",
  67                           "GPIO6",
  68                           "SPI_CE1_N",
  69                           "SPI_CE0_N",
  70                           "SPI_MISO",
  71                           "SPI_MOSI",
  72                           "SPI_SCLK",
  73                           "GPIO12",
  74                           "GPIO13",
  75                           /* Serial port */
  76                           "TXD1",
  77                           "RXD1",
  78                           "GPIO16",
  79                           "GPIO17",
  80                           "GPIO18",
  81                           "GPIO19",
  82                           "GPIO20",
  83                           "GPIO21",
  84                           "GPIO22",
  85                           "GPIO23",
  86                           "GPIO24",
  87                           "GPIO25",
  88                           "GPIO26",
  89                           "GPIO27",
  90                           "", /* GPIO 28 */
  91                           "LAN_RUN_BOOT",
  92                           /* Used by BT module */
  93                           "CTS0",
  94                           "RTS0",
  95                           "TXD0",
  96                           "RXD0",
  97                           /* Used by Wifi */
  98                           "SD1_CLK",
  99                           "SD1_CMD",
 100                           "SD1_DATA0",
 101                           "SD1_DATA1",
 102                           "SD1_DATA2",
 103                           "SD1_DATA3",
 104                           "PWM0_OUT",
 105                           "PWM1_OUT",
 106                           "ETHCLK",
 107                           "WIFI_CLK",
 108                           "SDA0",
 109                           "SCL0",
 110                           "SMPS_SCL",
 111                           "SMPS_SDA",
 112                           /* Used by SD Card */
 113                           "SD_CLK_R",
 114                           "SD_CMD_R",
 115                           "SD_DATA0_R",
 116                           "SD_DATA1_R",
 117                           "SD_DATA2_R",
 118                           "SD_DATA3_R";
 119 };
 120
 121 &pwm {
 122         pinctrl-names = "default";
 123         pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
 124         status = "okay";
 125 };
 126
 127 &hdmi {
 128         hpd-gpios = <&expgpio 4 GPIO_ACTIVE_LOW>;
 129         power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
 130         status = "okay";
 131 };
 132
 133 /* uart0 communicates with the BT module */
 134 &uart0 {
 135         pinctrl-names = "default";
 136         pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
 137 };
 138
 139 /* uart1 is mapped to the pin header */
 140 &uart1 {
 141         pinctrl-names = "default";
 142         pinctrl-0 = <&uart1_gpio14>;
 143         status = "okay";
 144 };
 145
 146 /* SDHOST is used to drive the SD card */
 147 &sdhost {
 148         pinctrl-names = "default";
 149         pinctrl-0 = <&sdhost_gpio48>;
 150         status = "okay";
 151         bus-width = <4>;
 152 };
 153
 154 &wifi_pwrseq {
 155         reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
 156 };