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