xref: /linux/arch/arm/boot/dts/broadcom/bcm2835-rpi-a-plus.dts (revision 4b132aacb0768ac1e652cf517097ea6f237214b9) 
1// SPDX-License-Identifier: GPL-2.0
2/dts-v1/;
3#include "bcm2835.dtsi"
4#include "bcm2835-rpi.dtsi"
5#include "bcm2835-rpi-common.dtsi"
6#include "bcm283x-rpi-led-deprecated.dtsi"
7#include "bcm283x-rpi-usb-host.dtsi"
8
9/ {
10	compatible = "raspberrypi,model-a-plus", "brcm,bcm2835";
11	model = "Raspberry Pi Model A+";
12
13	memory@0 {
14		device_type = "memory";
15		reg = <0 0x10000000>;
16	};
17};
18
19&gpio {
20	/*
21	 * This is based on the unreleased schematic for the Model A+.
22	 *
23	 * Legend:
24	 * "FOO" = GPIO line named "FOO" on the schematic
25	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
26	 */
27	gpio-line-names = "ID_SDA",
28			  "ID_SCL",
29			  "SDA1",
30			  "SCL1",
31			  "GPIO_GCLK",
32			  "GPIO5",
33			  "GPIO6",
34			  "SPI_CE1_N",
35			  "SPI_CE0_N",
36			  "SPI_MISO",
37			  "SPI_MOSI",
38			  "SPI_SCLK",
39			  "GPIO12",
40			  "GPIO13",
41			  /* Serial port */
42			  "TXD0",
43			  "RXD0",
44			  "GPIO16",
45			  "GPIO17",
46			  "GPIO18",
47			  "GPIO19",
48			  "GPIO20",
49			  "GPIO21",
50			  "GPIO22",
51			  "GPIO23",
52			  "GPIO24",
53			  "GPIO25",
54			  "GPIO26",
55			  "GPIO27",
56			  "SDA0",
57			  "SCL0",
58			  "", /* GPIO30 */
59			  "", /* GPIO31 */
60			  "CAM_GPIO1", /* GPIO32 */
61			  "", /* GPIO33 */
62			  "", /* GPIO34 */
63			  "PWR_LOW_N", /* GPIO35 */
64			  "", /* GPIO36 */
65			  "", /* GPIO37 */
66			  "USB_LIMIT", /* GPIO38 */
67			  "", /* GPIO39 */
68			  "PWM0_OUT", /* GPIO40 */
69			  "CAM_GPIO0", /* GPIO41 */
70			  "", /* GPIO42 */
71			  "", /* GPIO43 */
72			  "", /* GPIO44 */
73			  "PWM1_OUT", /* GPIO45 */
74			  "HDMI_HPD_N",
75			  "STATUS_LED",
76			  /* Used by SD Card */
77			  "SD_CLK_R",
78			  "SD_CMD_R",
79			  "SD_DATA0_R",
80			  "SD_DATA1_R",
81			  "SD_DATA2_R",
82			  "SD_DATA3_R";
83
84	pinctrl-names = "default";
85	pinctrl-0 = <&gpioout &alt0 &i2s_alt0>;
86
87	/* I2S interface */
88	i2s_alt0: i2s_alt0 {
89		brcm,pins = <18 19 20 21>;
90		brcm,function = <BCM2835_FSEL_ALT0>;
91	};
92};
93
94&hdmi {
95	hpd-gpios = <&gpio 46 GPIO_ACTIVE_LOW>;
96	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
97	status = "okay";
98};
99
100&led_act {
101	gpios = <&gpio 47 GPIO_ACTIVE_HIGH>;
102};
103
104&leds {
105	led-pwr {
106		label = "PWR";
107		gpios = <&gpio 35 GPIO_ACTIVE_HIGH>;
108		default-state = "keep";
109		linux,default-trigger = "default-on";
110	};
111};
112
113&pwm {
114	pinctrl-names = "default";
115	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio45>;
116	status = "okay";
117};
118
119&sdhost {
120	pinctrl-names = "default";
121	pinctrl-0 = <&sdhost_gpio48>;
122	bus-width = <4>;
123	status = "okay";
124};
125
126&uart0 {
127	pinctrl-names = "default";
128	pinctrl-0 = <&uart0_gpio14>;
129	status = "okay";
130};
131