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