arch/arm/boot/dts/bcm2838-rpi-4-b.dts

   1 // SPDX-License-Identifier: GPL-2.0
   2 /dts-v1/;
   3 #include "bcm2838.dtsi"
   4 #include "bcm2835-rpi.dtsi"
   5 #include "bcm2838-rpi.dtsi"
   6
   7 / {
   8         compatible = "raspberrypi,4-model-b", "brcm,bcm2711";
   9         model = "Raspberry Pi 4 Model B";
  10
  11         chosen {
  12                 /* 8250 auxiliary UART instead of pl011 */
  13                 stdout-path = "serial1:115200n8";
  14         };
  15
  16         memory@0 {
  17                 reg = <0 0 0x40000000>;
  18         };
  19
  20         leds {
  21                 act {
  22                         gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
  23                 };
  24
  25                 pwr {
  26                         label = "PWR";
  27                         gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
  28                 };
  29         };
  30
  31         wifi_pwrseq: wifi-pwrseq {
  32                 compatible = "mmc-pwrseq-simple";
  33                 reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
  34         };
  35
  36         sd_io_1v8_reg: sd_io_1v8_reg {
  37                 status = "okay";
  38                 compatible = "regulator-gpio";
  39                 vin-supply = <&vdd_5v0_reg>;
  40                 regulator-name = "vdd-sd-io";
  41                 regulator-min-microvolt = <1800000>;
  42                 regulator-max-microvolt = <3300000>;
  43                 regulator-boot-on;
  44                 regulator-always-on;
  45                 regulator-settling-time-us = <5000>;
  46
  47                 gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
  48                 states = <1800000 0x1
  49                           3300000 0x0>;
  50         };
  51 };
  52
  53 &firmware {
  54         expgpio: gpio {
  55                 compatible = "raspberrypi,firmware-gpio";
  56                 gpio-controller;
  57                 #gpio-cells = <2>;
  58                 gpio-line-names = "BT_ON",
  59                                   "WL_ON",
  60                                   "PWR_LED_OFF",
  61                                   "GLOBAL_RESET",
  62                                   "VDD_SD_IO_SEL",
  63                                   "CAM_GPIO",
  64                                   "",
  65                                   "";
  66                 status = "okay";
  67         };
  68 };
  69
  70 &pwm1 {
  71         pinctrl-names = "default";
  72         pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
  73         status = "okay";
  74 };
  75
  76 /* SDHCI is used to control the SDIO for wireless */
  77 &sdhci {
  78         #address-cells = <1>;
  79         #size-cells = <0>;
  80         pinctrl-names = "default";
  81         pinctrl-0 = <&emmc_gpio34>;
  82         status = "okay";
  83         bus-width = <4>;
  84         non-removable;
  85         mmc-pwrseq = <&wifi_pwrseq>;
  86
  87         brcmf: wifi@1 {
  88                 reg = <1>;
  89                 compatible = "brcm,bcm4329-fmac";
  90         };
  91 };
  92
  93 /* EMMC2 is used to drive the SD card */
  94 &emmc2 {
  95         status = "okay";
  96         broken-cd;
  97         vqmmc-supply = <&sd_io_1v8_reg>;
  98 };
  99
 100 /* uart0 communicates with the BT module */
 101 &uart0 {
 102         pinctrl-names = "default";
 103         pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
 104         status = "okay";
 105
 106         bluetooth {
 107                 compatible = "brcm,bcm43438-bt";
 108                 max-speed = <2000000>;
 109                 shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
 110         };
 111 };
 112
 113 /* uart1 is mapped to the pin header */
 114 &uart1 {
 115         pinctrl-names = "default";
 116         pinctrl-0 = <&uart1_gpio14>;
 117         status = "okay";
 118 };