bcm2837-rpi-3-a-plus.dts

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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-usb-host.dtsi"
    6 #include "bcm283x-rpi-wifi-bt.dtsi"
    7 
    8 / {
    9         compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
   10         model = "Raspberry Pi 3 Model A+";
   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 0x20000000>;
   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 
   36 &firmware {
   37         expgpio: gpio {
   38                 compatible = "raspberrypi,firmware-gpio";
   39                 gpio-controller;
   40                 #gpio-cells = <2>;
   41                 gpio-line-names = "",
   42                                   "BT_WL_ON",
   43                                   "STATUS_LED_R",
   44                                   "",
   45                                   "",
   46                                   "CAM_GPIO0",
   47                                   "CAM_GPIO1",
   48                                   "";
   49                 status = "okay";
   50         };
   51 };
   52 
   53 &gpio {
   54         /*
   55          * This is mostly based on the official GPU firmware DT blob.
   56          *
   57          * Legend:
   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                           "HDMI_HPD_N",
   91                           "STATUS_LED_G",
   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                           "", /* GPIO42 */
  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 &hdmi {
  122         hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
  123         power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
  124         status = "okay";
  125 };
  126 
  127 &pwm {
  128         pinctrl-names = "default";
  129         pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
  130         status = "okay";
  131 };
  132 
  133 /* SDHOST is used to drive the SD card */
  134 &sdhost {
  135         pinctrl-names = "default";
  136         pinctrl-0 = <&sdhost_gpio48>;
  137         status = "okay";
  138         bus-width = <4>;
  139 };
  140 
  141 /* uart0 communicates with the BT module
  142  *
  143  * WL_REG_ON and BT_REG_ON of the CYW43455 Wifi/BT module are driven
  144  * by a single GPIO. We can't give GPIO control to one of the drivers,
  145  * otherwise the other part would get unexpectedly disturbed.
  146  */
  147 &uart0 {
  148         pinctrl-names = "default";
  149         pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
  150 };
  151 
  152 /* uart1 is mapped to the pin header */
  153 &uart1 {
  154         pinctrl-names = "default";
  155         pinctrl-0 = <&uart1_gpio14>;
  156         status = "okay";
  157 };

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FreeBSD/Linux Kernel Cross Reference sys/contrib/device-tree/src/arm/bcm2837-rpi-3-a-plus.dts

FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/src/arm/bcm2837-rpi-3-a-plus.dts