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 "bcm2835-rpi-common.dtsi"
10 #include "bcm283x-rpi-led-deprecated.dtsi"
11 #include "bcm283x-rpi-usb-otg.dtsi"
12
13 / {
14 compatible = "raspberrypi,model-zero", "brcm,bcm2835";
15 model = "Raspberry Pi Zero";
16
17 memory@0 {
18 device_type = "memory";
19 reg = <0 0x20000000>;
20 };
21 };
22
23 &gpio {
24 /*
25 * This is based on the official GPU firmware DT blob.
26 *
27 * Legend:
28 * "FOO" = GPIO line named "FOO" on the schematic
29 * "FOO_N" = GPIO line named "FOO" on schematic, active low
30 */
31 gpio-line-names = "ID_SDA",
32 "ID_SCL",
33 "SDA1",
34 "SCL1",
35 "GPIO_GCLK",
36 "GPIO5",
37 "GPIO6",
38 "SPI_CE1_N",
39 "SPI_CE0_N",
40 "SPI_MISO",
41 "SPI_MOSI",
42 "SPI_SCLK",
43 "GPIO12",
44 "GPIO13",
45 /* Serial port */
46 "TXD0",
47 "RXD0",
48 "GPIO16",
49 "GPIO17",
50 "GPIO18",
51 "GPIO19",
52 "GPIO20",
53 "GPIO21",
54 "GPIO22",
55 "GPIO23",
56 "GPIO24",
57 "GPIO25",
58 "GPIO26",
59 "GPIO27",
60 "SDA0",
61 "SCL0",
62 "", /* GPIO30 */
63 "", /* GPIO31 */
64 "CAM_GPIO1", /* GPIO32 */
65 "", /* GPIO33 */
66 "", /* GPIO34 */
67 "", /* GPIO35 */
68 "", /* GPIO36 */
69 "", /* GPIO37 */
70 "", /* GPIO38 */
71 "", /* GPIO39 */
72 "", /* GPIO40 */
73 "CAM_GPIO0", /* GPIO41 */
74 "", /* GPIO42 */
75 "", /* GPIO43 */
76 "", /* GPIO44 */
77 "", /* GPIO45 */
78 "HDMI_HPD_N",
79 "STATUS_LED_N",
80 /* Used by SD Card */
81 "SD_CLK_R",
82 "SD_CMD_R",
83 "SD_DATA0_R",
84 "SD_DATA1_R",
85 "SD_DATA2_R",
86 "SD_DATA3_R";
87
88 pinctrl-names = "default";
89 pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
90
91 /* I2S interface */
92 i2s_alt0: i2s_alt0 {
93 brcm,pins = <18 19 20 21>;
94 brcm,function = <BCM2835_FSEL_ALT0>;
95 };
96 };
97
98 &hdmi {
99 hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
100 power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
101 status = "okay";
102 };
103
104 &led_act {
105 gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
106 };
107
108 &sdhost {
109 pinctrl-names = "default";
110 pinctrl-0 = <&sdhost_gpio48>;
111 bus-width = <4>;
112 status = "okay";
113 };
114
115 &uart0 {
116 pinctrl-names = "default";
117 pinctrl-0 = <&uart0_gpio14>;
118 status = "okay";
119 };
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