arch/arm/boot/dts/bcm2835-rpi-a-plus.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-plus", "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 47 GPIO_ACTIVE_HIGH>;
  19                 };
  20
  21                 led-pwr {
  22                         label = "PWR";
  23                         gpios = <&gpio 35 GPIO_ACTIVE_HIGH>;
  24                         default-state = "keep";
  25                         linux,default-trigger = "default-on";
  26                 };
  27         };
  28 };
  29
  30 &gpio {
  31         /*
  32          * This is based on the unreleased schematic for the Model A+.
  33          *
  34          * Legend:
  35          * "NC" = not connected (no rail from the SoC)
  36          * "FOO" = GPIO line named "FOO" on the schematic
  37          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  38          */
  39         gpio-line-names = "ID_SDA",
  40                           "ID_SCL",
  41                           "SDA1",
  42                           "SCL1",
  43                           "GPIO_GCLK",
  44                           "GPIO5",
  45                           "GPIO6",
  46                           "SPI_CE1_N",
  47                           "SPI_CE0_N",
  48                           "SPI_MISO",
  49                           "SPI_MOSI",
  50                           "SPI_SCLK",
  51                           "GPIO12",
  52                           "GPIO13",
  53                           /* Serial port */
  54                           "TXD0",
  55                           "RXD0",
  56                           "GPIO16",
  57                           "GPIO17",
  58                           "GPIO18",
  59                           "GPIO19",
  60                           "GPIO20",
  61                           "GPIO21",
  62                           "GPIO22",
  63                           "GPIO23",
  64                           "GPIO24",
  65                           "GPIO25",
  66                           "GPIO26",
  67                           "GPIO27",
  68                           "SDA0",
  69                           "SCL0",
  70                           "NC", /* GPIO30 */
  71                           "NC", /* GPIO31 */
  72                           "CAM_GPIO1", /* GPIO32 */
  73                           "NC", /* GPIO33 */
  74                           "NC", /* GPIO34 */
  75                           "PWR_LOW_N", /* GPIO35 */
  76                           "NC", /* GPIO36 */
  77                           "NC", /* GPIO37 */
  78                           "USB_LIMIT", /* GPIO38 */
  79                           "NC", /* GPIO39 */
  80                           "PWM0_OUT", /* GPIO40 */
  81                           "CAM_GPIO0", /* GPIO41 */
  82                           "NC", /* GPIO42 */
  83                           "NC", /* GPIO43 */
  84                           "NC", /* GPIO44 */
  85                           "PWM1_OUT", /* GPIO45 */
  86                           "HDMI_HPD_N",
  87                           "STATUS_LED",
  88                           /* Used by SD Card */
  89                           "SD_CLK_R",
  90                           "SD_CMD_R",
  91                           "SD_DATA0_R",
  92                           "SD_DATA1_R",
  93                           "SD_DATA2_R",
  94                           "SD_DATA3_R";
  95
  96         pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
  97
  98         /* I2S interface */
  99         i2s_alt0: i2s_alt0 {
 100                 brcm,pins = <18 19 20 21>;
 101                 brcm,function = <BCM2835_FSEL_ALT0>;
 102         };
 103 };
 104
 105 &hdmi {
 106         hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
 107         power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
 108         status = "okay";
 109 };
 110
 111 &pwm {
 112         pinctrl-names = "default";
 113         pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio45>;
 114         status = "okay";
 115 };
 116
 117 &sdhost {
 118         pinctrl-names = "default";
 119         pinctrl-0 = <&sdhost_gpio48>;
 120         bus-width = <4>;
 121         status = "okay";
 122 };
 123
 124 &uart0 {
 125         pinctrl-names = "default";
 126         pinctrl-0 = <&uart0_gpio14>;
 127         status = "okay";
 128 };