arch/arm/boot/dts/broadcom/bcm2835-rpi-b-plus.dts

   1 // SPDX-License-Identifier: GPL-2.0
   2 /dts-v1/;
   3 #include "bcm2835.dtsi"
   4 #include "bcm2835-rpi.dtsi"
   5 #include "bcm2835-rpi-common.dtsi"
   6 #include "bcm283x-rpi-led-deprecated.dtsi"
   7 #include "bcm283x-rpi-smsc9514.dtsi"
   8 #include "bcm283x-rpi-usb-host.dtsi"
   9
  10 / {
  11         compatible = "raspberrypi,model-b-plus", "brcm,bcm2835";
  12         model = "Raspberry Pi Model B+";
  13
  14         memory@0 {
  15                 device_type = "memory";
  16                 reg = <0 0x20000000>;
  17         };
  18 };
  19
  20 &gpio {
  21         /*
  22          * Taken from Raspberry-Pi-B-Plus-V1.2-Schematics.pdf
  23          * RPI-BPLUS sheet 1
  24          *
  25          * Legend:
  26          * "FOO" = GPIO line named "FOO" on the schematic
  27          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  28          */
  29         gpio-line-names = "ID_SDA",
  30                           "ID_SCL",
  31                           "SDA1",
  32                           "SCL1",
  33                           "GPIO_GCLK",
  34                           "GPIO5",
  35                           "GPIO6",
  36                           "SPI_CE1_N",
  37                           "SPI_CE0_N",
  38                           "SPI_MISO",
  39                           "SPI_MOSI",
  40                           "SPI_SCLK",
  41                           "GPIO12",
  42                           "GPIO13",
  43                           /* Serial port */
  44                           "TXD0",
  45                           "RXD0",
  46                           "GPIO16",
  47                           "GPIO17",
  48                           "GPIO18",
  49                           "GPIO19",
  50                           "GPIO20",
  51                           "GPIO21",
  52                           "GPIO22",
  53                           "GPIO23",
  54                           "GPIO24",
  55                           "GPIO25",
  56                           "GPIO26",
  57                           "GPIO27",
  58                           "SDA0",
  59                           "SCL0",
  60                           "", /* GPIO30 */
  61                           "LAN_RUN", /* GPIO31 */
  62                           "CAM_GPIO1", /* GPIO32 */
  63                           "", /* GPIO33 */
  64                           "", /* GPIO34 */
  65                           "PWR_LOW_N", /* GPIO35 */
  66                           "", /* GPIO36 */
  67                           "", /* GPIO37 */
  68                           "USB_LIMIT", /* GPIO38 */
  69                           "", /* GPIO39 */
  70                           "PWM0_OUT", /* GPIO40 */
  71                           "CAM_GPIO0", /* GPIO41 */
  72                           "", /* GPIO42 */
  73                           "", /* GPIO43 */
  74                           "ETH_CLK", /* GPIO44 */
  75                           "PWM1_OUT", /* GPIO45 */
  76                           "HDMI_HPD_N",
  77                           "STATUS_LED",
  78                           /* Used by SD Card */
  79                           "SD_CLK_R",
  80                           "SD_CMD_R",
  81                           "SD_DATA0_R",
  82                           "SD_DATA1_R",
  83                           "SD_DATA2_R",
  84                           "SD_DATA3_R";
  85
  86         pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
  87
  88         /* I2S interface */
  89         i2s_alt0: i2s_alt0 {
  90                 brcm,pins = <18 19 20 21>;
  91                 brcm,function = <BCM2835_FSEL_ALT0>;
  92         };
  93 };
  94
  95 &hdmi {
  96         hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
  97         power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
  98         status = "okay";
  99 };
 100
 101 &led_act {
 102         gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
 103 };
 104
 105 &leds {
 106         led-pwr {
 107                 label = "PWR";
 108                 gpios = <&gpio 35 GPIO_ACTIVE_HIGH>;
 109                 default-state = "keep";
 110                 linux,default-trigger = "default-on";
 111         };
 112 };
 113
 114 &pwm {
 115         pinctrl-names = "default";
 116         pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio45>;
 117         status = "okay";
 118 };
 119
 120 &sdhost {
 121         pinctrl-names = "default";
 122         pinctrl-0 = <&sdhost_gpio48>;
 123         bus-width = <4>;
 124         status = "okay";
 125 };
 126
 127 &uart0 {
 128         pinctrl-names = "default";
 129         pinctrl-0 = <&uart0_gpio14>;
 130         status = "okay";
 131 };