arch/arm/boot/dts/bcm2837-rpi-3-a-plus.dts

   1 // SPDX-License-Identifier: GPL-2.0
   2 /dts-v1/;
   3 #include "bcm2837.dtsi"
   4 #include "bcm2836-rpi.dtsi"
   5 #include "bcm283x-rpi-usb-host.dtsi"
   6
   7 / {
   8         compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
   9         model = "Raspberry Pi 3 Model A+";
  10
  11         chosen {
  12                 /* 8250 auxiliary UART instead of pl011 */
  13                 stdout-path = "serial1:115200n8";
  14         };
  15
  16         memory@0 {
  17                 device_type = "memory";
  18                 reg = <0 0x20000000>;
  19         };
  20
  21         leds {
  22                 act {
  23                         gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
  24                 };
  25
  26                 pwr {
  27                         label = "PWR";
  28                         gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
  29                 };
  30         };
  31 };
  32
  33 &firmware {
  34         expgpio: gpio {
  35                 compatible = "raspberrypi,firmware-gpio";
  36                 gpio-controller;
  37                 #gpio-cells = <2>;
  38                 gpio-line-names = "",
  39                                   "BT_WL_ON",
  40                                   "STATUS_LED_R",
  41                                   "",
  42                                   "",
  43                                   "CAM_GPIO0",
  44                                   "CAM_GPIO1",
  45                                   "";
  46                 status = "okay";
  47         };
  48 };
  49
  50 &gpio {
  51         /*
  52          * This is mostly based on the official GPU firmware DT blob.
  53          *
  54          * Legend:
  55          * "NC" = not connected (no rail from the SoC)
  56          * "FOO" = GPIO line named "FOO" on the schematic
  57          * "FOO_N" = GPIO line named "FOO" on schematic, active low
  58          */
  59         gpio-line-names = "ID_SDA",
  60                           "ID_SCL",
  61                           "SDA1",
  62                           "SCL1",
  63                           "GPIO_GCLK",
  64                           "GPIO5",
  65                           "GPIO6",
  66                           "SPI_CE1_N",
  67                           "SPI_CE0_N",
  68                           "SPI_MISO",
  69                           "SPI_MOSI",
  70                           "SPI_SCLK",
  71                           "GPIO12",
  72                           "GPIO13",
  73                           /* Serial port */
  74                           "TXD1",
  75                           "RXD1",
  76                           "GPIO16",
  77                           "GPIO17",
  78                           "GPIO18",
  79                           "GPIO19",
  80                           "GPIO20",
  81                           "GPIO21",
  82                           "GPIO22",
  83                           "GPIO23",
  84                           "GPIO24",
  85                           "GPIO25",
  86                           "GPIO26",
  87                           "GPIO27",
  88                           "HDMI_HPD_N",
  89                           "STATUS_LED_G",
  90                           /* Used by BT module */
  91                           "CTS0",
  92                           "RTS0",
  93                           "TXD0",
  94                           "RXD0",
  95                           /* Used by Wifi */
  96                           "SD1_CLK",
  97                           "SD1_CMD",
  98                           "SD1_DATA0",
  99                           "SD1_DATA1",
 100                           "SD1_DATA2",
 101                           "SD1_DATA3",
 102                           "PWM0_OUT",
 103                           "PWM1_OUT",
 104                           "", /* GPIO42 */
 105                           "WIFI_CLK",
 106                           "SDA0",
 107                           "SCL0",
 108                           "SMPS_SCL",
 109                           "SMPS_SDA",
 110                           /* Used by SD Card */
 111                           "SD_CLK_R",
 112                           "SD_CMD_R",
 113                           "SD_DATA0_R",
 114                           "SD_DATA1_R",
 115                           "SD_DATA2_R",
 116                           "SD_DATA3_R";
 117 };
 118
 119 &hdmi {
 120         hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
 121         power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
 122         status = "okay";
 123 };
 124
 125 &pwm {
 126         pinctrl-names = "default";
 127         pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
 128         status = "okay";
 129 };
 130
 131 /*
 132  * SDHCI is used to control the SDIO for wireless
 133  *
 134  * WL_REG_ON and BT_REG_ON of the CYW43455 Wifi/BT module are driven
 135  * by a single GPIO. We can't give GPIO control to one of the drivers,
 136  * otherwise the other part would get unexpectedly disturbed.
 137  */
 138 &sdhci {
 139         #address-cells = <1>;
 140         #size-cells = <0>;
 141         pinctrl-names = "default";
 142         pinctrl-0 = <&emmc_gpio34>;
 143         status = "okay";
 144         bus-width = <4>;
 145         non-removable;
 146
 147         brcmf: wifi@1 {
 148                 reg = <1>;
 149                 compatible = "brcm,bcm4329-fmac";
 150         };
 151 };
 152
 153 /* SDHOST is used to drive the SD card */
 154 &sdhost {
 155         pinctrl-names = "default";
 156         pinctrl-0 = <&sdhost_gpio48>;
 157         status = "okay";
 158         bus-width = <4>;
 159 };
 160
 161 /* uart0 communicates with the BT module */
 162 &uart0 {
 163         pinctrl-names = "default";
 164         pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
 165         status = "okay";
 166
 167         bluetooth {
 168                 compatible = "brcm,bcm43438-bt";
 169                 max-speed = <2000000>;
 170         };
 171 };
 172
 173 /* uart1 is mapped to the pin header */
 174 &uart1 {
 175         pinctrl-names = "default";
 176         pinctrl-0 = <&uart1_gpio14>;
 177         status = "okay";
 178 };