xref: /linux/arch/arm/boot/dts/broadcom/bcm2835-rpi-zero.dts (revision 0791faebfe750292a8a842b64795a390ca4a3b51) 
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-0 = <&gpioout &alt0 &i2s_alt0>;
89
90	/* I2S interface */
91	i2s_alt0: i2s_alt0 {
92		brcm,pins = <18 19 20 21>;
93		brcm,function = <BCM2835_FSEL_ALT0>;
94	};
95};
96
97&hdmi {
98	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
99	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
100	status = "okay";
101};
102
103&led_act {
104	gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
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};
119