1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
3 #include "bcm2837.dtsi"
4 #include "bcm2836-rpi.dtsi"
5 #include "bcm283x-rpi-smsc9514.dtsi"
6 #include "bcm283x-rpi-usb-host.dtsi"
7 #include "bcm283x-rpi-wifi-bt.dtsi"
8
9 / {
10 compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
11 model = "Raspberry Pi 3 Model B";
12
13 chosen {
14 /* 8250 auxiliary UART instead of pl011 */
15 stdout-path = "serial1:115200n8";
16 };
17
18 memory@0 {
19 device_type = "memory";
20 reg = <0 0x40000000>;
21 };
22
23 leds {
24 led-act {
25 gpios = <&expgpio 2 GPIO_ACTIVE_HIGH>;
26 };
27 };
28 };
29
30 &bt {
31 shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
32 };
33
34 &firmware {
35 expgpio: gpio {
36 compatible = "raspberrypi,firmware-gpio";
37 gpio-controller;
38 #gpio-cells = <2>;
39 gpio-line-names = "BT_ON",
40 "WL_ON",
41 "STATUS_LED",
42 "LAN_RUN",
43 "HDMI_HPD_N",
44 "CAM_GPIO0",
45 "CAM_GPIO1",
46 "PWR_LOW_N";
47 status = "okay";
48 };
49 };
50
51 &gpio {
52 /*
53 * Taken from rpi_SCH_3b_1p2_reduced.pdf and
54 * the official GPU firmware DT blob.
55 *
56 * Legend:
57 * "FOO" = GPIO line named "FOO" on the schematic
58 * "FOO_N" = GPIO line named "FOO" on schematic, active low
59 */
60 gpio-line-names = "ID_SDA",
61 "ID_SCL",
62 "SDA1",
63 "SCL1",
64 "GPIO_GCLK",
65 "GPIO5",
66 "GPIO6",
67 "SPI_CE1_N",
68 "SPI_CE0_N",
69 "SPI_MISO",
70 "SPI_MOSI",
71 "SPI_SCLK",
72 "GPIO12",
73 "GPIO13",
74 /* Serial port */
75 "TXD1",
76 "RXD1",
77 "GPIO16",
78 "GPIO17",
79 "GPIO18",
80 "GPIO19",
81 "GPIO20",
82 "GPIO21",
83 "GPIO22",
84 "GPIO23",
85 "GPIO24",
86 "GPIO25",
87 "GPIO26",
88 "GPIO27",
89 "", /* GPIO 28 */
90 "LAN_RUN_BOOT",
91 /* Used by BT module */
92 "CTS0",
93 "RTS0",
94 "TXD0",
95 "RXD0",
96 /* Used by Wifi */
97 "SD1_CLK",
98 "SD1_CMD",
99 "SD1_DATA0",
100 "SD1_DATA1",
101 "SD1_DATA2",
102 "SD1_DATA3",
103 "PWM0_OUT",
104 "PWM1_OUT",
105 "ETH_CLK",
106 "WIFI_CLK",
107 "SDA0",
108 "SCL0",
109 "SMPS_SCL",
110 "SMPS_SDA",
111 /* Used by SD Card */
112 "SD_CLK_R",
113 "SD_CMD_R",
114 "SD_DATA0_R",
115 "SD_DATA1_R",
116 "SD_DATA2_R",
117 "SD_DATA3_R";
118 };
119
120 &pwm {
121 pinctrl-names = "default";
122 pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
123 status = "okay";
124 };
125
126 &hdmi {
127 hpd-gpios = <&expgpio 4 GPIO_ACTIVE_LOW>;
128 power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
129 status = "okay";
130 };
131
132 /* uart0 communicates with the BT module */
133 &uart0 {
134 pinctrl-names = "default";
135 pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
136 };
137
138 /* uart1 is mapped to the pin header */
139 &uart1 {
140 pinctrl-names = "default";
141 pinctrl-0 = <&uart1_gpio14>;
142 status = "okay";
143 };
144
145 /* SDHOST is used to drive the SD card */
146 &sdhost {
147 pinctrl-names = "default";
148 pinctrl-0 = <&sdhost_gpio48>;
149 status = "okay";
150 bus-width = <4>;
151 };
152
153 &wifi_pwrseq {
154 reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
155 };
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