1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
// SPDX-License-Identifier: GPL-2.0
/dts-v1/;
#include "bcm2837.dtsi"
#include "bcm2836-rpi.dtsi"
#include "bcm283x-rpi-usb-host.dtsi"
/ {
compatible = "raspberrypi,3-model-a-plus", "brcm,bcm2837";
model = "Raspberry Pi 3 Model A+";
chosen {
/* 8250 auxiliary UART instead of pl011 */
stdout-path = "serial1:115200n8";
};
memory@0 {
device_type = "memory";
reg = <0 0x20000000>;
};
leds {
act {
gpios = <&gpio 29 GPIO_ACTIVE_HIGH>;
};
pwr {
label = "PWR";
gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
};
};
};
&firmware {
expgpio: gpio {
compatible = "raspberrypi,firmware-gpio";
gpio-controller;
#gpio-cells = <2>;
gpio-line-names = "",
"BT_WL_ON",
"STATUS_LED_R",
"",
"",
"CAM_GPIO0",
"CAM_GPIO1",
"";
status = "okay";
};
};
&gpio {
/*
* This is mostly based on the official GPU firmware DT blob.
*
* Legend:
* "NC" = not connected (no rail from the SoC)
* "FOO" = GPIO line named "FOO" on the schematic
* "FOO_N" = GPIO line named "FOO" on schematic, active low
*/
gpio-line-names = "ID_SDA",
"ID_SCL",
"SDA1",
"SCL1",
"GPIO_GCLK",
"GPIO5",
"GPIO6",
"SPI_CE1_N",
"SPI_CE0_N",
"SPI_MISO",
"SPI_MOSI",
"SPI_SCLK",
"GPIO12",
"GPIO13",
/* Serial port */
"TXD1",
"RXD1",
"GPIO16",
"GPIO17",
"GPIO18",
"GPIO19",
"GPIO20",
"GPIO21",
"GPIO22",
"GPIO23",
"GPIO24",
"GPIO25",
"GPIO26",
"GPIO27",
"HDMI_HPD_N",
"STATUS_LED_G",
/* Used by BT module */
"CTS0",
"RTS0",
"TXD0",
"RXD0",
/* Used by Wifi */
"SD1_CLK",
"SD1_CMD",
"SD1_DATA0",
"SD1_DATA1",
"SD1_DATA2",
"SD1_DATA3",
"PWM0_OUT",
"PWM1_OUT",
"", /* GPIO42 */
"WIFI_CLK",
"SDA0",
"SCL0",
"SMPS_SCL",
"SMPS_SDA",
/* Used by SD Card */
"SD_CLK_R",
"SD_CMD_R",
"SD_DATA0_R",
"SD_DATA1_R",
"SD_DATA2_R",
"SD_DATA3_R";
};
&hdmi {
hpd-gpios = <&gpio 28 GPIO_ACTIVE_LOW>;
power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
status = "okay";
};
&pwm {
pinctrl-names = "default";
pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio41>;
status = "okay";
};
/*
* SDHCI is used to control the SDIO for wireless
*
* WL_REG_ON and BT_REG_ON of the CYW43455 Wifi/BT module are driven
* by a single GPIO. We can't give GPIO control to one of the drivers,
* otherwise the other part would get unexpectedly disturbed.
*/
&sdhci {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&emmc_gpio34>;
status = "okay";
bus-width = <4>;
non-removable;
brcmf: wifi@1 {
reg = <1>;
compatible = "brcm,bcm4329-fmac";
};
};
/* SDHOST is used to drive the SD card */
&sdhost {
pinctrl-names = "default";
pinctrl-0 = <&sdhost_gpio48>;
status = "okay";
bus-width = <4>;
};
/* uart0 communicates with the BT module */
&uart0 {
pinctrl-names = "default";
pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32 &gpclk2_gpio43>;
status = "okay";
bluetooth {
compatible = "brcm,bcm43438-bt";
max-speed = <2000000>;
};
};
/* uart1 is mapped to the pin header */
&uart1 {
pinctrl-names = "default";
pinctrl-0 = <&uart1_gpio14>;
status = "okay";
};
|
