xref: /linux/arch/arm/boot/dts/broadcom/bcm2837-rpi-zero-2-w.dts (revision 6e7fd890f1d6ac83805409e9c346240de2705584) 
1// SPDX-License-Identifier: GPL-2.0+
2/*
3 * Copyright (C) 2022 Stefan Wahren <stefan.wahren@i2se.com>
4 */
5
6/dts-v1/;
7#include "bcm2837.dtsi"
8#include "bcm2836-rpi.dtsi"
9#include "bcm283x-rpi-led-deprecated.dtsi"
10#include "bcm283x-rpi-usb-otg.dtsi"
11#include "bcm283x-rpi-wifi-bt.dtsi"
12
13/ {
14	compatible = "raspberrypi,model-zero-2-w", "brcm,bcm2837";
15	model = "Raspberry Pi Zero 2 W";
16
17	memory@0 {
18		device_type = "memory";
19		reg = <0 0x20000000>;
20	};
21
22	chosen {
23		/* 8250 auxiliary UART instead of pl011 */
24		stdout-path = "serial1:115200n8";
25	};
26};
27
28&bt {
29	shutdown-gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
30};
31
32&gpio {
33	/*
34	 * This is based on the official GPU firmware DT blob.
35	 *
36	 * Legend:
37	 * "NC" = not connected (no rail from the SoC)
38	 * "FOO" = GPIO line named "FOO" on the schematic
39	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
40	 */
41	gpio-line-names = "ID_SDA",
42			  "ID_SCL",
43			  "SDA1",
44			  "SCL1",
45			  "GPIO_GCLK",
46			  "GPIO5",
47			  "GPIO6",
48			  "SPI_CE1_N",
49			  "SPI_CE0_N",
50			  "SPI_MISO",
51			  "SPI_MOSI",
52			  "SPI_SCLK",
53			  "GPIO12",
54			  "GPIO13",
55			  /* Serial port */
56			  "TXD0",
57			  "RXD0",
58			  "GPIO16",
59			  "GPIO17",
60			  "GPIO18",
61			  "GPIO19",
62			  "GPIO20",
63			  "GPIO21",
64			  "GPIO22",
65			  "GPIO23",
66			  "GPIO24",
67			  "GPIO25",
68			  "GPIO26",
69			  "GPIO27",
70			  "HDMI_HPD_N",
71			  "STATUS_LED_N",
72			  "NC", /* GPIO30 */
73			  "NC", /* GPIO31 */
74			  "NC", /* GPIO32 */
75			  "NC", /* GPIO33 */
76			  "NC", /* GPIO34 */
77			  "NC", /* GPIO35 */
78			  "NC", /* GPIO36 */
79			  "NC", /* GPIO37 */
80			  "NC", /* GPIO38 */
81			  "NC", /* GPIO39 */
82			  "CAM_GPIO0", /* GPIO40 */
83			  "WL_ON", /* GPIO41 */
84			  "BT_ON", /* GPIO42 */
85			  "WIFI_CLK", /* GPIO43 */
86			  "SDA0", /* GPIO44 */
87			  "SCL0", /* GPIO45 */
88			  "SMPS_SCL",
89			  "SMPS_SDA",
90			  /* Used by SD Card */
91			  "SD_CLK_R",
92			  "SD_CMD_R",
93			  "SD_DATA0_R",
94			  "SD_DATA1_R",
95			  "SD_DATA2_R",
96			  "SD_DATA3_R";
97
98	pinctrl-names = "default";
99	pinctrl-0 = <&gpioout &alt0>;
100};
101
102&hdmi {
103	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
104	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
105	status = "okay";
106};
107
108&led_act {
109	gpios = <&gpio 29 GPIO_ACTIVE_LOW>;
110};
111
112&sdhci {
113	pinctrl-names = "default";
114	pinctrl-0 = <&emmc_gpio34 &gpclk2_gpio43>;
115};
116
117&sdhost {
118	pinctrl-names = "default";
119	pinctrl-0 = <&sdhost_gpio48>;
120	bus-width = <4>;
121	status = "okay";
122};
123
124&uart0 {
125	pinctrl-names = "default";
126	pinctrl-0 = <&uart0_gpio32 &uart0_ctsrts_gpio30>;
127};
128
129&uart1 {
130	pinctrl-names = "default";
131	pinctrl-0 = <&uart1_gpio14>;
132	status = "okay";
133};
134
135&wifi_pwrseq {
136	reset-gpios = <&gpio 41 GPIO_ACTIVE_LOW>;
137};
138