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