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		device_type = "memory";
18		reg = <0 0x20000000>;
19	};
20
21	leds {
22		act {
23			gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
24		};
25
26		pwr {
27			label = "PWR";
28			gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
29			default-state = "keep";
30			linux,default-trigger = "default-on";
31		};
32	};
33};
34
35&firmware {
36	expgpio: gpio {
37		compatible = "raspberrypi,firmware-gpio";
38		gpio-controller;
39		#gpio-cells = <2>;
40		gpio-line-names = "",
41				  "BT_WL_ON",
42				  "STATUS_LED_R",
43				  "",
44				  "",
45				  "CAM_GPIO0",
46				  "CAM_GPIO1",
47				  "";
48		status = "okay";
49	};
50};
51
52&gpio {
53	/*
54	 * This is mostly based on the official GPU firmware DT blob.
55	 *
56	 * Legend:
57	 * "NC" = not connected (no rail from the SoC)
58	 * "FOO" = GPIO line named "FOO" on the schematic
59	 * "FOO_N" = GPIO line named "FOO" on schematic, active low
60	 */
61	gpio-line-names = "ID_SDA",
62			  "ID_SCL",
63			  "SDA1",
64			  "SCL1",
65			  "GPIO_GCLK",
66			  "GPIO5",
67			  "GPIO6",
68			  "SPI_CE1_N",
69			  "SPI_CE0_N",
70			  "SPI_MISO",
71			  "SPI_MOSI",
72			  "SPI_SCLK",
73			  "GPIO12",
74			  "GPIO13",
75			  /* Serial port */
76			  "TXD1",
77			  "RXD1",
78			  "GPIO16",
79			  "GPIO17",
80			  "GPIO18",
81			  "GPIO19",
82			  "GPIO20",
83			  "GPIO21",
84			  "GPIO22",
85			  "GPIO23",
86			  "GPIO24",
87			  "GPIO25",
88			  "GPIO26",
89			  "GPIO27",
90			  "HDMI_HPD_N",
91			  "STATUS_LED_G",
92			  /* Used by BT module */
93			  "CTS0",
94			  "RTS0",
95			  "TXD0",
96			  "RXD0",
97			  /* Used by Wifi */
98			  "SD1_CLK",
99			  "SD1_CMD",
100			  "SD1_DATA0",
101			  "SD1_DATA1",
102			  "SD1_DATA2",
103			  "SD1_DATA3",
104			  "PWM0_OUT",
105			  "PWM1_OUT",
106			  "", /* GPIO42 */
107			  "WIFI_CLK",
108			  "SDA0",
109			  "SCL0",
110			  "SMPS_SCL",
111			  "SMPS_SDA",
112			  /* Used by SD Card */
113			  "SD_CLK_R",
114			  "SD_CMD_R",
115			  "SD_DATA0_R",
116			  "SD_DATA1_R",
117			  "SD_DATA2_R",
118			  "SD_DATA3_R";
119};
120
121&hdmi {
122	hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
123	power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
124	status = "okay";
125};
126
127&pwm {
128	pinctrl-names = "default";
129	pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
130	status = "okay";
131};
132
133/*
134 * SDHCI is used to control the SDIO for wireless
135 *
136 * WL_REG_ON and BT_REG_ON of the CYW43455 Wifi/BT module are driven
137 * by a single GPIO. We can't give GPIO control to one of the drivers,
138 * otherwise the other part would get unexpectedly disturbed.
139 */
140&sdhci {
141	#address-cells = <1>;
142	#size-cells = <0>;
143	pinctrl-names = "default";
144	pinctrl-0 = <&emmc_gpio34>;
145	status = "okay";
146	bus-width = <4>;
147	non-removable;
148
149	brcmf: wifi@1 {
150		reg = <1>;
151		compatible = "brcm,bcm4329-fmac";
152	};
153};
154
155/* SDHOST is used to drive the SD card */
156&sdhost {
157	pinctrl-names = "default";
158	pinctrl-0 = <&sdhost_gpio48>;
159	status = "okay";
160	bus-width = <4>;
161};
162
163/* uart0 communicates with the BT module */
164&uart0 {
165	pinctrl-names = "default";
166	pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
167	status = "okay";
168
169	bluetooth {
170		compatible = "brcm,bcm43438-bt";
171		max-speed = <2000000>;
172	};
173};
174
175/* uart1 is mapped to the pin header */
176&uart1 {
177	pinctrl-names = "default";
178	pinctrl-0 = <&uart1_gpio14>;
179	status = "okay";
180};
181