src/arm/broadcom/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-led-deprecated.dtsi"
   7 #include "bcm283x-rpi-usb-host.dtsi"
   8 #include "bcm283x-rpi-wifi-bt.dtsi"
   9
  10 / {
  11         compatible = "raspberrypi,3-model-b-plus", "brcm,bcm2837";
  12         model = "Raspberry Pi 3 Model B+";
  13
  14         chosen {
  15                 /* 8250 auxiliary UART instead of pl011 */
  16                 stdout-path = "serial1:115200n8";
  17         };
  18
  19         memory@0 {
  20                 device_type = "memory";
  21                 reg = <0 0x40000000>;
  22         };
  23 };
  24
  25 &bt {
  26         shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
  27 };
  28
  29 &firmware {
  30         expgpio: gpio {
  31                 compatible = "raspberrypi,firmware-gpio";
  32                 gpio-controller;
  33                 #gpio-cells = <2>;
  34                 gpio-line-names = "BT_ON",
  35                                   "WL_ON",
  36                                   "PWR_LED_R",
  37                                   "LAN_RUN",
  38                                   "",
  39                                   "CAM_GPIO0",
  40                                   "CAM_GPIO1",
  41                                   "";
  42                 status = "okay";
  43         };
  44 };
  45
  46 &gpio {
  47         /*
  48          * Taken from rpi_SCH_3bplus_1p0_reduced.pdf and
  49          * the official GPU firmware DT blob.
  50          *
  51          * Legend:
  52          * "FOO" = GPIO line named "FOO" on the schematic
  53          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  54          */
  55         gpio-line-names = "ID_SDA",
  56                           "ID_SCL",
  57                           "SDA1",
  58                           "SCL1",
  59                           "GPIO_GCLK",
  60                           "GPIO5",
  61                           "GPIO6",
  62                           "SPI_CE1_N",
  63                           "SPI_CE0_N",
  64                           "SPI_MISO",
  65                           "SPI_MOSI",
  66                           "SPI_SCLK",
  67                           "GPIO12",
  68                           "GPIO13",
  69                           /* Serial port */
  70                           "TXD1",
  71                           "RXD1",
  72                           "GPIO16",
  73                           "GPIO17",
  74                           "GPIO18",
  75                           "GPIO19",
  76                           "GPIO20",
  77                           "GPIO21",
  78                           "GPIO22",
  79                           "GPIO23",
  80                           "GPIO24",
  81                           "GPIO25",
  82                           "GPIO26",
  83                           "GPIO27",
  84                           "HDMI_HPD_N",
  85                           "STATUS_LED_G",
  86                           /* Used by BT module */
  87                           "CTS0",
  88                           "RTS0",
  89                           "TXD0",
  90                           "RXD0",
  91                           /* Used by Wifi */
  92                           "SD1_CLK",
  93                           "SD1_CMD",
  94                           "SD1_DATA0",
  95                           "SD1_DATA1",
  96                           "SD1_DATA2",
  97                           "SD1_DATA3",
  98                           "PWM0_OUT",
  99                           "PWM1_OUT",
 100                           "ETH_CLK",
 101                           "WIFI_CLK",
 102                           "SDA0",
 103                           "SCL0",
 104                           "SMPS_SCL",
 105                           "SMPS_SDA",
 106                           /* Used by SD Card */
 107                           "SD_CLK_R",
 108                           "SD_CMD_R",
 109                           "SD_DATA0_R",
 110                           "SD_DATA1_R",
 111                           "SD_DATA2_R",
 112                           "SD_DATA3_R";
 113 };
 114
 115 &hdmi {
 116         hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
 117         power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
 118         status = "okay";
 119 };
 120
 121 &led_act {
 122         gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
 123 };
 124
 125 &leds {
 126         led-pwr {
 127                 label = "PWR";
 128                 gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
 129                 default-state = "keep";
 130                 linux,default-trigger = "default-on";
 131         };
 132 };
 133
 134 &pwm {
 135         pinctrl-names = "default";
 136         pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
 137         status = "okay";
 138 };
 139
 140 /* SDHOST is used to drive the SD card */
 141 &sdhost {
 142         pinctrl-names = "default";
 143         pinctrl-0 = <&sdhost_gpio48>;
 144         status = "okay";
 145         bus-width = <4>;
 146 };
 147
 148 /* uart0 communicates with the BT module */
 149 &uart0 {
 150         pinctrl-names = "default";
 151         pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
 152 };
 153
 154 /* uart1 is mapped to the pin header */
 155 &uart1 {
 156         pinctrl-names = "default";
 157         pinctrl-0 = <&uart1_gpio14>;
 158         status = "okay";
 159 };
 160
 161 &wifi_pwrseq {
 162         reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
 163 };