src/arm/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 "bcm2835-rpi-common.dtsi"
  10 #include "bcm283x-rpi-led-deprecated.dtsi"
  11 #include "bcm283x-rpi-usb-otg.dtsi"
  12
  13 / {
  14         compatible = "raspberrypi,model-zero", "brcm,bcm2835";
  15         model = "Raspberry Pi Zero";
  16
  17         memory@0 {
  18                 device_type = "memory";
  19                 reg = <0 0x20000000>;
  20         };
  21 };
  22
  23 &gpio {
  24         /*
  25          * This is based on the official GPU firmware DT blob.
  26          *
  27          * Legend:
  28          * "FOO" = GPIO line named "FOO" on the schematic
  29          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  30          */
  31         gpio-line-names = "ID_SDA",
  32                           "ID_SCL",
  33                           "SDA1",
  34                           "SCL1",
  35                           "GPIO_GCLK",
  36                           "GPIO5",
  37                           "GPIO6",
  38                           "SPI_CE1_N",
  39                           "SPI_CE0_N",
  40                           "SPI_MISO",
  41                           "SPI_MOSI",
  42                           "SPI_SCLK",
  43                           "GPIO12",
  44                           "GPIO13",
  45                           /* Serial port */
  46                           "TXD0",
  47                           "RXD0",
  48                           "GPIO16",
  49                           "GPIO17",
  50                           "GPIO18",
  51                           "GPIO19",
  52                           "GPIO20",
  53                           "GPIO21",
  54                           "GPIO22",
  55                           "GPIO23",
  56                           "GPIO24",
  57                           "GPIO25",
  58                           "GPIO26",
  59                           "GPIO27",
  60                           "SDA0",
  61                           "SCL0",
  62                           "", /* GPIO30 */
  63                           "", /* GPIO31 */
  64                           "CAM_GPIO1", /* GPIO32 */
  65                           "", /* GPIO33 */
  66                           "", /* GPIO34 */
  67                           "", /* GPIO35 */
  68                           "", /* GPIO36 */
  69                           "", /* GPIO37 */
  70                           "", /* GPIO38 */
  71                           "", /* GPIO39 */
  72                           "", /* GPIO40 */
  73                           "CAM_GPIO0", /* GPIO41 */
  74                           "", /* GPIO42 */
  75                           "", /* GPIO43 */
  76                           "", /* GPIO44 */
  77                           "", /* GPIO45 */
  78                           "HDMI_HPD_N",
  79                           "STATUS_LED_N",
  80                           /* Used by SD Card */
  81                           "SD_CLK_R",
  82                           "SD_CMD_R",
  83                           "SD_DATA0_R",
  84                           "SD_DATA1_R",
  85                           "SD_DATA2_R",
  86                           "SD_DATA3_R";
  87
  88         pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
  89
  90         /* I2S interface */
  91         i2s_alt0: i2s_alt0 {
  92                 brcm,pins = <18 19 20 21>;
  93                 brcm,function = <BCM2835_FSEL_ALT0>;
  94         };
  95 };
  96
  97 &hdmi {
  98         hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
  99         power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
 100         status = "okay";
 101 };
 102
 103 &led_act {
 104         gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
 105 };
 106
 107 &sdhost {
 108         pinctrl-names = "default";
 109         pinctrl-0 = <&sdhost_gpio48>;
 110         bus-width = <4>;
 111         status = "okay";
 112 };
 113
 114 &uart0 {
 115         pinctrl-names = "default";
 116         pinctrl-0 = <&uart0_gpio14>;
 117         status = "okay";
 118 };