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

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