1// SPDX-License-Identifier: GPL-2.0
2/dts-v1/;
3#include "bcm2837.dtsi"
4#include "bcm2836-rpi.dtsi"
5#include "bcm283x-rpi-usb-host.dtsi"
6
7/ {
8	compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
9	model = "Raspberry Pi 3 Model A+";
10
11	chosen {
12		/* 8250 auxiliary UART instead of pl011 */
13		stdout-path = "serial1:115200n8";
14	};
15
16	memory@0 {
17		reg = <0 0x20000000>;
18	};
19
20	leds {
21		act {
22			gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
23		};
24
25		pwr {
26			label = "PWR";
27			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
28		};
29	};
30};
31
32&firmware {
33	expgpio: gpio {
34		compatible = "raspberrypi,firmware-gpio";
35		gpio-controller;
36		#gpio-cells = <2>;
37		gpio-line-names = "",
38				  "BT_WL_ON",
39				  "STATUS_LED_R",
40				  "",
41				  "",
42				  "CAM_GPIO0",
43				  "CAM_GPIO1",
44				  "";
45		status = "okay";
46	};
47};
48
49&gpio {
50	/*
51	 * This is mostly based on the official GPU firmware DT blob.
52	 *
53	 * Legend:
54	 * "NC" = not connected (no rail from the SoC)
55	 * "FOO" = GPIO line named "FOO" on the schematic
56	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
57	 */
58	gpio-line-names = "ID_SDA",
59			  "ID_SCL",
60			  "SDA1",
61			  "SCL1",
62			  "GPIO_GCLK",
63			  "GPIO5",
64			  "GPIO6",
65			  "SPI_CE1_N",
66			  "SPI_CE0_N",
67			  "SPI_MISO",
68			  "SPI_MOSI",
69			  "SPI_SCLK",
70			  "GPIO12",
71			  "GPIO13",
72			  /* Serial port */
73			  "TXD1",
74			  "RXD1",
75			  "GPIO16",
76			  "GPIO17",
77			  "GPIO18",
78			  "GPIO19",
79			  "GPIO20",
80			  "GPIO21",
81			  "GPIO22",
82			  "GPIO23",
83			  "GPIO24",
84			  "GPIO25",
85			  "GPIO26",
86			  "GPIO27",
87			  "HDMI_HPD_N",
88			  "STATUS_LED_G",
89			  /* Used by BT module */
90			  "CTS0",
91			  "RTS0",
92			  "TXD0",
93			  "RXD0",
94			  /* Used by Wifi */
95			  "SD1_CLK",
96			  "SD1_CMD",
97			  "SD1_DATA0",
98			  "SD1_DATA1",
99			  "SD1_DATA2",
100			  "SD1_DATA3",
101			  "PWM0_OUT",
102			  "PWM1_OUT",
103			  "", /* GPIO42 */
104			  "WIFI_CLK",
105			  "SDA0",
106			  "SCL0",
107			  "SMPS_SCL",
108			  "SMPS_SDA",
109			  /* Used by SD Card */
110			  "SD_CLK_R",
111			  "SD_CMD_R",
112			  "SD_DATA0_R",
113			  "SD_DATA1_R",
114			  "SD_DATA2_R",
115			  "SD_DATA3_R";
116};
117
118&hdmi {
119	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
120};
121
122&pwm {
123	pinctrl-names = "default";
124	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
125	status = "okay";
126};
127
128/*
129 * SDHCI is used to control the SDIO for wireless
130 *
131 * WL_REG_ON and BT_REG_ON of the CYW43455 Wifi/BT module are driven
132 * by a single GPIO. We can't give GPIO control to one of the drivers,
133 * otherwise the other part would get unexpectedly disturbed.
134 */
135&sdhci {
136	#address-cells = <1>;
137	#size-cells = <0>;
138	pinctrl-names = "default";
139	pinctrl-0 = <&emmc_gpio34>;
140	status = "okay";
141	bus-width = <4>;
142	non-removable;
143
144	brcmf: wifi@1 {
145		reg = <1>;
146		compatible = "brcm,bcm4329-fmac";
147	};
148};
149
150/* SDHOST is used to drive the SD card */
151&sdhost {
152	pinctrl-names = "default";
153	pinctrl-0 = <&sdhost_gpio48>;
154	status = "okay";
155	bus-width = <4>;
156};
157
158/* uart0 communicates with the BT module */
159&uart0 {
160	pinctrl-names = "default";
161	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
162	status = "okay";
163
164	bluetooth {
165		compatible = "brcm,bcm43438-bt";
166		max-speed = <2000000>;
167	};
168};
169
170/* uart1 is mapped to the pin header */
171&uart1 {
172	pinctrl-names = "default";
173	pinctrl-0 = <&uart1_gpio14>;
174	status = "okay";
175};
176