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
   8 / {
   9         compatible = "raspberrypi,3-model-b", "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                 reg = <0 0x40000000>;
  19         };
  20
  21         leds {
  22                 act {
  23                         gpios = <&expgpio 2 GPIO_ACTIVE_HIGH>;
  24                 };
  25         };
  26
  27         wifi_pwrseq: wifi-pwrseq {
  28                 compatible = "mmc-pwrseq-simple";
  29                 reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
  30         };
  31 };
  32
  33 &firmware {
  34         expgpio: gpio {
  35                 compatible = "raspberrypi,firmware-gpio";
  36                 gpio-controller;
  37                 #gpio-cells = <2>;
  38                 gpio-line-names = "BT_ON",
  39                                   "WL_ON",
  40                                   "STATUS_LED",
  41                                   "LAN_RUN",
  42                                   "HDMI_HPD_N",
  43                                   "CAM_GPIO0",
  44                                   "CAM_GPIO1",
  45                                   "PWR_LOW_N";
  46                 status = "okay";
  47         };
  48 };
  49
  50 &gpio {
  51         /*
  52          * Taken from rpi_SCH_3b_1p2_reduced.pdf and
  53          * the official GPU firmware DT blob.
  54          *
  55          * Legend:
  56          * "NC" = not connected (no rail from the SoC)
  57          * "FOO" = GPIO line named "FOO" on the schematic
  58          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  59          */
  60         gpio-line-names = "ID_SDA",
  61                           "ID_SCL",
  62                           "SDA1",
  63                           "SCL1",
  64                           "GPIO_GCLK",
  65                           "GPIO5",
  66                           "GPIO6",
  67                           "SPI_CE1_N",
  68                           "SPI_CE0_N",
  69                           "SPI_MISO",
  70                           "SPI_MOSI",
  71                           "SPI_SCLK",
  72                           "GPIO12",
  73                           "GPIO13",
  74                           /* Serial port */
  75                           "TXD1",
  76                           "RXD1",
  77                           "GPIO16",
  78                           "GPIO17",
  79                           "GPIO18",
  80                           "GPIO19",
  81                           "GPIO20",
  82                           "GPIO21",
  83                           "GPIO22",
  84                           "GPIO23",
  85                           "GPIO24",
  86                           "GPIO25",
  87                           "GPIO26",
  88                           "GPIO27",
  89                           "", /* GPIO 28 */
  90                           "LAN_RUN_BOOT",
  91                           /* Used by BT module */
  92                           "CTS0",
  93                           "RTS0",
  94                           "TXD0",
  95                           "RXD0",
  96                           /* Used by Wifi */
  97                           "SD1_CLK",
  98                           "SD1_CMD",
  99                           "SD1_DATA0",
 100                           "SD1_DATA1",
 101                           "SD1_DATA2",
 102                           "SD1_DATA3",
 103                           "PWM0_OUT",
 104                           "PWM1_OUT",
 105                           "ETHCLK",
 106                           "WIFI_CLK",
 107                           "SDA0",
 108                           "SCL0",
 109                           "SMPS_SCL",
 110                           "SMPS_SDA",
 111                           /* Used by SD Card */
 112                           "SD_CLK_R",
 113                           "SD_CMD_R",
 114                           "SD_DATA0_R",
 115                           "SD_DATA1_R",
 116                           "SD_DATA2_R",
 117                           "SD_DATA3_R";
 118 };
 119
 120 &pwm {
 121         pinctrl-names = "default";
 122         pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
 123         status = "okay";
 124 };
 125
 126 &hdmi {
 127         hpd-gpios = <&expgpio 4 GPIO_ACTIVE_LOW>;
 128 };
 129
 130 /* uart0 communicates with the BT module */
 131 &uart0 {
 132         pinctrl-names = "default";
 133         pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
 134         status = "okay";
 135
 136         bluetooth {
 137                 compatible = "brcm,bcm43438-bt";
 138                 max-speed = <2000000>;
 139                 shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
 140         };
 141 };
 142
 143 /* uart1 is mapped to the pin header */
 144 &uart1 {
 145         pinctrl-names = "default";
 146         pinctrl-0 = <&uart1_gpio14>;
 147         status = "okay";
 148 };
 149
 150 /* SDHCI is used to control the SDIO for wireless */
 151 &sdhci {
 152         #address-cells = <1>;
 153         #size-cells = <0>;
 154         pinctrl-names = "default";
 155         pinctrl-0 = <&emmc_gpio34>;
 156         status = "okay";
 157         bus-width = <4>;
 158         non-removable;
 159         mmc-pwrseq = <&wifi_pwrseq>;
 160
 161         brcmf: wifi@1 {
 162                 reg = <1>;
 163                 compatible = "brcm,bcm4329-fmac";
 164         };
 165 };
 166
 167 /* SDHOST is used to drive the SD card */
 168 &sdhost {
 169         pinctrl-names = "default";
 170         pinctrl-0 = <&sdhost_gpio48>;
 171         status = "okay";
 172         bus-width = <4>;
 173 };