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

   1 /*
   2  * Copyright (C) 2017 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-host.dtsi"
  16
  17 / {
  18         compatible = "raspberrypi,model-zero-w", "brcm,bcm2835";
  19         model = "Raspberry Pi Zero W";
  20
  21         chosen {
  22                 /* 8250 auxiliary UART instead of pl011 */
  23                 stdout-path = "serial1:115200n8";
  24         };
  25
  26         leds {
  27                 act {
  28                         gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
  29                 };
  30         };
  31
  32         wifi_pwrseq: wifi-pwrseq {
  33                 compatible = "mmc-pwrseq-simple";
  34                 pinctrl-names = "default";
  35                 pinctrl-0 = <&wl_on>;
  36                 reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
  37         };
  38 };
  39
  40 &gpio {
  41         /*
  42          * This is based on the official GPU firmware DT blob.
  43          *
  44          * Legend:
  45          * "NC" = not connected (no rail from the SoC)
  46          * "FOO" = GPIO line named "FOO" on the schematic
  47          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  48          */
  49         gpio-line-names = "GPIO0",
  50                           "GPIO1",
  51                           "SDA1",
  52                           "SCL1",
  53                           "GPIO_GCLK",
  54                           "GPIO5",
  55                           "GPIO6",
  56                           "SPI_CE1_N",
  57                           "SPI_CE0_N",
  58                           "SPI_MISO",
  59                           "SPI_MOSI",
  60                           "SPI_SCLK",
  61                           "GPIO12",
  62                           "GPIO13",
  63                           /* Serial port */
  64                           "TXD0",
  65                           "RXD0",
  66                           "GPIO16",
  67                           "GPIO17",
  68                           "GPIO18",
  69                           "GPIO19",
  70                           "GPIO20",
  71                           "GPIO21",
  72                           "GPIO22",
  73                           "GPIO23",
  74                           "GPIO24",
  75                           "GPIO25",
  76                           "GPIO26",
  77                           "GPIO27",
  78                           "SDA0",
  79                           "SCL0",
  80                           "NC", /* GPIO30 */
  81                           "NC", /* GPIO31 */
  82                           "NC", /* GPIO32 */
  83                           "NC", /* GPIO33 */
  84                           "NC", /* GPIO34 */
  85                           "NC", /* GPIO35 */
  86                           "NC", /* GPIO36 */
  87                           "NC", /* GPIO37 */
  88                           "NC", /* GPIO38 */
  89                           "NC", /* GPIO39 */
  90                           "CAM_GPIO1", /* GPIO40 */
  91                           "WL_ON", /* GPIO41 */
  92                           "NC", /* GPIO42 */
  93                           "WIFI_CLK", /* GPIO43 */
  94                           "CAM_GPIO0", /* GPIO44 */
  95                           "BT_ON", /* GPIO45 */
  96                           "HDMI_HPD_N",
  97                           "STATUS_LED_N",
  98                           /* Used by SD Card */
  99                           "SD_CLK_R",
 100                           "SD_CMD_R",
 101                           "SD_DATA0_R",
 102                           "SD_DATA1_R",
 103                           "SD_DATA2_R",
 104                           "SD_DATA3_R";
 105
 106         pinctrl-0 = <&gpioout &alt0>;
 107
 108         wl_on: wl-on {
 109                 brcm,pins = <41>;
 110                 brcm,function = <BCM2835_FSEL_GPIO_OUT>;
 111         };
 112 };
 113
 114 &hdmi {
 115         hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
 116 };
 117
 118 &sdhci {
 119         #address-cells = <1>;
 120         #size-cells = <0>;
 121         pinctrl-0 = <&emmc_gpio34 &gpclk2_gpio43>;
 122         mmc-pwrseq = <&wifi_pwrseq>;
 123         non-removable;
 124         status = "okay";
 125
 126         brcmf: wifi@1 {
 127                 reg = <1>;
 128                 compatible = "brcm,bcm4329-fmac";
 129         };
 130 };
 131
 132 &uart0 {
 133         pinctrl-names = "default";
 134         pinctrl-0 = <&uart0_gpio14>;
 135         status = "okay";
 136 };