xref: /freebsd/sys/contrib/device-tree/src/arm/broadcom/bcm2837-rpi-3-b.dts (revision a90b9d0159070121c221b966469c3e36d912bf82) 
1// SPDX-License-Identifier: GPL-2.0
2/dts-v1/;
3#include "bcm2837.dtsi"
4#include "bcm2836-rpi.dtsi"
5#include "bcm283x-rpi-led-deprecated.dtsi"
6#include "bcm283x-rpi-smsc9514.dtsi"
7#include "bcm283x-rpi-usb-host.dtsi"
8#include "bcm283x-rpi-wifi-bt.dtsi"
9
10/ {
11	compatible = "raspberrypi,3-model-b", "brcm,bcm2837";
12	model = "Raspberry Pi 3 Model B";
13
14	chosen {
15		/* 8250 auxiliary UART instead of pl011 */
16		stdout-path = "serial1:115200n8";
17	};
18
19	memory@0 {
20		device_type = "memory";
21		reg = <0 0x40000000>;
22	};
23};
24
25&bt {
26	shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
27};
28
29&firmware {
30	expgpio: gpio {
31		compatible = "raspberrypi,firmware-gpio";
32		gpio-controller;
33		#gpio-cells = <2>;
34		gpio-line-names = "BT_ON",
35				  "WL_ON",
36				  "STATUS_LED",
37				  "LAN_RUN",
38				  "HDMI_HPD_N",
39				  "CAM_GPIO0",
40				  "CAM_GPIO1",
41				  "PWR_LOW_N";
42		status = "okay";
43	};
44};
45
46&gpio {
47	/*
48	 * Taken from rpi_SCH_3b_1p2_reduced.pdf and
49	 * the official GPU firmware DT blob.
50	 *
51	 * Legend:
52	 * "FOO" = GPIO line named "FOO" on the schematic
53	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
54	 */
55	gpio-line-names = "ID_SDA",
56			  "ID_SCL",
57			  "SDA1",
58			  "SCL1",
59			  "GPIO_GCLK",
60			  "GPIO5",
61			  "GPIO6",
62			  "SPI_CE1_N",
63			  "SPI_CE0_N",
64			  "SPI_MISO",
65			  "SPI_MOSI",
66			  "SPI_SCLK",
67			  "GPIO12",
68			  "GPIO13",
69			  /* Serial port */
70			  "TXD1",
71			  "RXD1",
72			  "GPIO16",
73			  "GPIO17",
74			  "GPIO18",
75			  "GPIO19",
76			  "GPIO20",
77			  "GPIO21",
78			  "GPIO22",
79			  "GPIO23",
80			  "GPIO24",
81			  "GPIO25",
82			  "GPIO26",
83			  "GPIO27",
84			  "", /* GPIO 28 */
85			  "LAN_RUN_BOOT",
86			  /* Used by BT module */
87			  "CTS0",
88			  "RTS0",
89			  "TXD0",
90			  "RXD0",
91			  /* Used by Wifi */
92			  "SD1_CLK",
93			  "SD1_CMD",
94			  "SD1_DATA0",
95			  "SD1_DATA1",
96			  "SD1_DATA2",
97			  "SD1_DATA3",
98			  "PWM0_OUT",
99			  "PWM1_OUT",
100			  "ETH_CLK",
101			  "WIFI_CLK",
102			  "SDA0",
103			  "SCL0",
104			  "SMPS_SCL",
105			  "SMPS_SDA",
106			  /* Used by SD Card */
107			  "SD_CLK_R",
108			  "SD_CMD_R",
109			  "SD_DATA0_R",
110			  "SD_DATA1_R",
111			  "SD_DATA2_R",
112			  "SD_DATA3_R";
113};
114
115&pwm {
116	pinctrl-names = "default";
117	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
118	status = "okay";
119};
120
121&hdmi {
122	hpd-gpios = <&expgpio 4 GPIO_ACTIVE_LOW>;
123	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
124	status = "okay";
125};
126
127&led_act {
128	gpios = <&expgpio 2 GPIO_ACTIVE_HIGH>;
129};
130
131/* uart0 communicates with the BT module */
132&uart0 {
133	pinctrl-names = "default";
134	pinctrl-0 = <&uart0_gpio32 &gpclk2_gpio43>;
135};
136
137/* uart1 is mapped to the pin header */
138&uart1 {
139	pinctrl-names = "default";
140	pinctrl-0 = <&uart1_gpio14>;
141	status = "okay";
142};
143
144/* SDHOST is used to drive the SD card */
145&sdhost {
146	pinctrl-names = "default";
147	pinctrl-0 = <&sdhost_gpio48>;
148	status = "okay";
149	bus-width = <4>;
150};
151
152&wifi_pwrseq {
153	reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
154};
155