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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /dts-v1/;
   3 #include "bcm2835.dtsi"
   4 #include "bcm2835-rpi.dtsi"
   5 #include "bcm283x-rpi-usb-host.dtsi"
   6
   7 / {
   8         compatible = "raspberrypi,model-a", "brcm,bcm2835";
   9         model = "Raspberry Pi Model A";
  10
  11         memory@0 {
  12                 device_type = "memory";
  13                 reg = <0 0x10000000>;
  14         };
  15
  16         leds {
  17                 led-act {
  18                         gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
  19                 };
  20         };
  21 };
  22
  23 &gpio {
  24         /*
  25          * Taken from Raspberry-Pi-Rev-1.0-Model-AB-Schematics.pdf
  26          * RPI00021 sheet 02
  27          *
  28          * Legend:
  29          * "NC" = not connected (no rail from the SoC)
  30          * "FOO" = GPIO line named "FOO" on the schematic
  31          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  32          */
  33         gpio-line-names = "SDA0",
  34                           "SCL0",
  35                           "SDA1",
  36                           "SCL1",
  37                           "GPIO_GCLK",
  38                           "CAM_GPIO1",
  39                           "LAN_RUN",
  40                           "SPI_CE1_N",
  41                           "SPI_CE0_N",
  42                           "SPI_MISO",
  43                           "SPI_MOSI",
  44                           "SPI_SCLK",
  45                           "NC", /* GPIO12 */
  46                           "NC", /* GPIO13 */
  47                           /* Serial port */
  48                           "TXD0",
  49                           "RXD0",
  50                           "STATUS_LED_N",
  51                           "GPIO17",
  52                           "GPIO18",
  53                           "NC", /* GPIO19 */
  54                           "NC", /* GPIO20 */
  55                           "GPIO21",
  56                           "GPIO22",
  57                           "GPIO23",
  58                           "GPIO24",
  59                           "GPIO25",
  60                           "NC", /* GPIO26 */
  61                           "CAM_GPIO0",
  62                           /* Binary number representing build/revision */
  63                           "CONFIG0",
  64                           "CONFIG1",
  65                           "CONFIG2",
  66                           "CONFIG3",
  67                           "NC", /* GPIO32 */
  68                           "NC", /* GPIO33 */
  69                           "NC", /* GPIO34 */
  70                           "NC", /* GPIO35 */
  71                           "NC", /* GPIO36 */
  72                           "NC", /* GPIO37 */
  73                           "NC", /* GPIO38 */
  74                           "NC", /* GPIO39 */
  75                           "PWM0_OUT",
  76                           "NC", /* GPIO41 */
  77                           "NC", /* GPIO42 */
  78                           "NC", /* GPIO43 */
  79                           "NC", /* GPIO44 */
  80                           "PWM1_OUT",
  81                           "HDMI_HPD_P",
  82                           "SD_CARD_DET",
  83                           /* Used by SD Card */
  84                           "SD_CLK_R",
  85                           "SD_CMD_R",
  86                           "SD_DATA0_R",
  87                           "SD_DATA1_R",
  88                           "SD_DATA2_R",
  89                           "SD_DATA3_R";
  90
  91         pinctrl-0 = <&gpioout &alt0 &i2s_alt2>;
  92
  93         /* I2S interface */
  94         i2s_alt2: i2s_alt2 {
  95                 brcm,pins = <28 29 30 31>;
  96                 brcm,function = <BCM2835_FSEL_ALT2>;
  97         };
  98 };
  99
 100 &hdmi {
 101         hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
 102         power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
 103         status = "okay";
 104 };
 105
 106 &pwm {
 107         pinctrl-names = "default";
 108         pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio45>;
 109         status = "okay";
 110 };
 111
 112 &sdhost {
 113         pinctrl-names = "default";
 114         pinctrl-0 = <&sdhost_gpio48>;
 115         bus-width = <4>;
 116         status = "okay";
 117 };
 118
 119 &uart0 {
 120         pinctrl-names = "default";
 121         pinctrl-0 = <&uart0_gpio14>;
 122         status = "okay";
 123 };
 124
 125 /* i2c0 on camera/display connector is gpio 0&1. Not exposed on header.
 126  * To avoid having to remap everything, map both ports to gpios 0&1
 127  */
 128 &i2c0mux {
 129         pinctrl-1 = <&i2c0_gpio0>;
 130 };