1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3 * Copyright (C) 2016 Stefan Wahren <stefan.wahren@i2se.com>
4 */
5
6 /dts-v1/;
7 #include "bcm2835.dtsi"
8 #include "bcm2835-rpi.dtsi"
9 #include "bcm283x-rpi-usb-otg.dtsi"
10
11 / {
12 compatible = "raspberrypi,model-zero", "brcm,bcm2835";
13 model = "Raspberry Pi Zero";
14
15 memory@0 {
16 device_type = "memory";
17 reg = <0 0x20000000>;
18 };
19
20 leds {
21 led-act {
22 gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
23 };
24 };
25 };
26
27 &gpio {
28 /*
29 * This is based on the official GPU firmware DT blob.
30 *
31 * Legend:
32 * "FOO" = GPIO line named "FOO" on the schematic
33 * "FOO_N" = GPIO line named "FOO" on schematic, active low
34 */
35 gpio-line-names = "ID_SDA",
36 "ID_SCL",
37 "SDA1",
38 "SCL1",
39 "GPIO_GCLK",
40 "GPIO5",
41 "GPIO6",
42 "SPI_CE1_N",
43 "SPI_CE0_N",
44 "SPI_MISO",
45 "SPI_MOSI",
46 "SPI_SCLK",
47 "GPIO12",
48 "GPIO13",
49 /* Serial port */
50 "TXD0",
51 "RXD0",
52 "GPIO16",
53 "GPIO17",
54 "GPIO18",
55 "GPIO19",
56 "GPIO20",
57 "GPIO21",
58 "GPIO22",
59 "GPIO23",
60 "GPIO24",
61 "GPIO25",
62 "GPIO26",
63 "GPIO27",
64 "SDA0",
65 "SCL0",
66 "", /* GPIO30 */
67 "", /* GPIO31 */
68 "CAM_GPIO1", /* GPIO32 */
69 "", /* GPIO33 */
70 "", /* GPIO34 */
71 "", /* GPIO35 */
72 "", /* GPIO36 */
73 "", /* GPIO37 */
74 "", /* GPIO38 */
75 "", /* GPIO39 */
76 "", /* GPIO40 */
77 "CAM_GPIO0", /* GPIO41 */
78 "", /* GPIO42 */
79 "", /* GPIO43 */
80 "", /* GPIO44 */
81 "", /* GPIO45 */
82 "HDMI_HPD_N",
83 "STATUS_LED_N",
84 /* Used by SD Card */
85 "SD_CLK_R",
86 "SD_CMD_R",
87 "SD_DATA0_R",
88 "SD_DATA1_R",
89 "SD_DATA2_R",
90 "SD_DATA3_R";
91
92 pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
93
94 /* I2S interface */
95 i2s_alt0: i2s_alt0 {
96 brcm,pins = <18 19 20 21>;
97 brcm,function = <BCM2835_FSEL_ALT0>;
98 };
99 };
100
101 &hdmi {
102 hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
103 power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
104 status = "okay";
105 };
106
107 &sdhost {
108 pinctrl-names = "default";
109 pinctrl-0 = <&sdhost_gpio48>;
110 bus-width = <4>;
111 status = "okay";
112 };
113
114 &uart0 {
115 pinctrl-names = "default";
116 pinctrl-0 = <&uart0_gpio14>;
117 status = "okay";
118 };
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