arch/arm/boot/dts/bcm2835-rpi-zero.dts

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright (C) 2016 Stefan Wahren <stefan.wahren@i2se.com>
   4  */
   5
   6 /dts-v1/;
   7 #include "bcm2835.dtsi"
   8 #include "bcm2835-rpi.dtsi"
   9 #include "bcm283x-rpi-usb-otg.dtsi"
  10
  11 / {
  12         compatible = "raspberrypi,model-zero", "brcm,bcm2835";
  13         model = "Raspberry Pi Zero";
  14
  15         memory@0 {
  16                 device_type = "memory";
  17                 reg = <0 0x20000000>;
  18         };
  19
  20         leds {
  21                 act {
  22                         gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
  23                 };
  24         };
  25 };
  26
  27 &gpio {
  28         /*
  29          * This is based on the official GPU firmware DT blob.
  30          *
  31          * Legend:
  32          * "NC" = not connected (no rail from the SoC)
  33          * "FOO" = GPIO line named "FOO" on the schematic
  34          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  35          */
  36         gpio-line-names = "ID_SDA",
  37                           "ID_SCL",
  38                           "SDA1",
  39                           "SCL1",
  40                           "GPIO_GCLK",
  41                           "GPIO5",
  42                           "GPIO6",
  43                           "SPI_CE1_N",
  44                           "SPI_CE0_N",
  45                           "SPI_MISO",
  46                           "SPI_MOSI",
  47                           "SPI_SCLK",
  48                           "GPIO12",
  49                           "GPIO13",
  50                           /* Serial port */
  51                           "TXD0",
  52                           "RXD0",
  53                           "GPIO16",
  54                           "GPIO17",
  55                           "GPIO18",
  56                           "GPIO19",
  57                           "GPIO20",
  58                           "GPIO21",
  59                           "GPIO22",
  60                           "GPIO23",
  61                           "GPIO24",
  62                           "GPIO25",
  63                           "GPIO26",
  64                           "GPIO27",
  65                           "SDA0",
  66                           "SCL0",
  67                           "NC", /* GPIO30 */
  68                           "NC", /* GPIO31 */
  69                           "CAM_GPIO1", /* GPIO32 */
  70                           "NC", /* GPIO33 */
  71                           "NC", /* GPIO34 */
  72                           "NC", /* GPIO35 */
  73                           "NC", /* GPIO36 */
  74                           "NC", /* GPIO37 */
  75                           "NC", /* GPIO38 */
  76                           "NC", /* GPIO39 */
  77                           "NC", /* GPIO40 */
  78                           "CAM_GPIO0", /* GPIO41 */
  79                           "NC", /* GPIO42 */
  80                           "NC", /* GPIO43 */
  81                           "NC", /* GPIO44 */
  82                           "NC", /* GPIO45 */
  83                           "HDMI_HPD_N",
  84                           "STATUS_LED_N",
  85                           /* Used by SD Card */
  86                           "SD_CLK_R",
  87                           "SD_CMD_R",
  88                           "SD_DATA0_R",
  89                           "SD_DATA1_R",
  90                           "SD_DATA2_R",
  91                           "SD_DATA3_R";
  92
  93         pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
  94
  95         /* I2S interface */
  96         i2s_alt0: i2s_alt0 {
  97                 brcm,pins = <18 19 20 21>;
  98                 brcm,function = <BCM2835_FSEL_ALT0>;
  99         };
 100 };
 101
 102 &hdmi {
 103         hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
 104         power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
 105         status = "okay";
 106 };
 107
 108 &sdhost {
 109         pinctrl-names = "default";
 110         pinctrl-0 = <&sdhost_gpio48>;
 111         bus-width = <4>;
 112         status = "okay";
 113 };
 114
 115 &uart0 {
 116         pinctrl-names = "default";
 117         pinctrl-0 = <&uart0_gpio14>;
 118         status = "okay";
 119 };