1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
3 #include "bcm2837.dtsi"
4 #include "bcm2836-rpi.dtsi"
5 #include "bcm283x-rpi-lan7515.dtsi"
6 #include "bcm283x-rpi-usb-host.dtsi"
7 #include "bcm283x-rpi-wifi-bt.dtsi"
8 
9 / {
10 	compatible = "raspberrypi,3-model-b-plus", "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 = <&gpio 29 GPIO_ACTIVE_HIGH>;
26 		};
27 
28 		led-pwr {
29 			label = "PWR";
30 			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
31 			default-state = "keep";
32 			linux,default-trigger = "default-on";
33 		};
34 	};
35 };
36 
37 &bt {
38 	shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
39 };
40 
41 &firmware {
42 	expgpio: gpio {
43 		compatible = "raspberrypi,firmware-gpio";
44 		gpio-controller;
45 		#gpio-cells = <2>;
46 		gpio-line-names = "BT_ON",
47 				  "WL_ON",
48 				  "STATUS_LED_R",
49 				  "LAN_RUN",
50 				  "",
51 				  "CAM_GPIO0",
52 				  "CAM_GPIO1",
53 				  "";
54 		status = "okay";
55 	};
56 };
57 
58 &gpio {
59 	/*
60 	 * Taken from rpi_SCH_3bplus_1p0_reduced.pdf and
61 	 * the official GPU firmware DT blob.
62 	 *
63 	 * Legend:
64 	 * "NC" = not connected (no rail from the SoC)
65 	 * "FOO" = GPIO line named "FOO" on the schematic
66 	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
67 	 */
68 	gpio-line-names = "ID_SDA",
69 			  "ID_SCL",
70 			  "SDA1",
71 			  "SCL1",
72 			  "GPIO_GCLK",
73 			  "GPIO5",
74 			  "GPIO6",
75 			  "SPI_CE1_N",
76 			  "SPI_CE0_N",
77 			  "SPI_MISO",
78 			  "SPI_MOSI",
79 			  "SPI_SCLK",
80 			  "GPIO12",
81 			  "GPIO13",
82 			  /* Serial port */
83 			  "TXD1",
84 			  "RXD1",
85 			  "GPIO16",
86 			  "GPIO17",
87 			  "GPIO18",
88 			  "GPIO19",
89 			  "GPIO20",
90 			  "GPIO21",
91 			  "GPIO22",
92 			  "GPIO23",
93 			  "GPIO24",
94 			  "GPIO25",
95 			  "GPIO26",
96 			  "GPIO27",
97 			  "HDMI_HPD_N",
98 			  "STATUS_LED_G",
99 			  /* Used by BT module */
100 			  "CTS0",
101 			  "RTS0",
102 			  "TXD0",
103 			  "RXD0",
104 			  /* Used by Wifi */
105 			  "SD1_CLK",
106 			  "SD1_CMD",
107 			  "SD1_DATA0",
108 			  "SD1_DATA1",
109 			  "SD1_DATA2",
110 			  "SD1_DATA3",
111 			  "PWM0_OUT",
112 			  "PWM1_OUT",
113 			  "ETHCLK",
114 			  "WIFI_CLK",
115 			  "SDA0",
116 			  "SCL0",
117 			  "SMPS_SCL",
118 			  "SMPS_SDA",
119 			  /* Used by SD Card */
120 			  "SD_CLK_R",
121 			  "SD_CMD_R",
122 			  "SD_DATA0_R",
123 			  "SD_DATA1_R",
124 			  "SD_DATA2_R",
125 			  "SD_DATA3_R";
126 };
127 
128 &hdmi {
129 	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
130 	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
131 	status = "okay";
132 };
133 
134 &pwm {
135 	pinctrl-names = "default";
136 	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
137 	status = "okay";
138 };
139 
140 /* SDHOST is used to drive the SD card */
141 &sdhost {
142 	pinctrl-names = "default";
143 	pinctrl-0 = <&sdhost_gpio48>;
144 	status = "okay";
145 	bus-width = <4>;
146 };
147 
148 /* uart0 communicates with the BT module */
149 &uart0 {
150 	pinctrl-names = "default";
151 	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
152 };
153 
154 /* uart1 is mapped to the pin header */
155 &uart1 {
156 	pinctrl-names = "default";
157 	pinctrl-0 = <&uart1_gpio14>;
158 	status = "okay";
159 };
160 
161 &wifi_pwrseq {
162 	reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
163 };
164