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", "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 * Taken from Raspberry-Pi-Rev-1.0-Model-AB-Schematics.pdf
22 * RPI00021 sheet 02
23 *
24 * Legend:
25 * "FOO" = GPIO line named "FOO" on the schematic
26 * "FOO_N" = GPIO line named "FOO" on schematic, active low
27 */
28 gpio-line-names = "SDA0",
29 "SCL0",
30 "SDA1",
31 "SCL1",
32 "GPIO_GCLK",
33 "CAM_GPIO1",
34 "LAN_RUN",
35 "SPI_CE1_N",
36 "SPI_CE0_N",
37 "SPI_MISO",
38 "SPI_MOSI",
39 "SPI_SCLK",
40 "", /* GPIO12 */
41 "", /* GPIO13 */
42 /* Serial port */
43 "TXD0",
44 "RXD0",
45 "STATUS_LED_N",
46 "GPIO17",
47 "GPIO18",
48 "", /* GPIO19 */
49 "", /* GPIO20 */
50 "GPIO21",
51 "GPIO22",
52 "GPIO23",
53 "GPIO24",
54 "GPIO25",
55 "", /* GPIO26 */
56 "CAM_GPIO0",
57 /* Binary number representing build/revision */
58 "CONFIG0",
59 "CONFIG1",
60 "CONFIG2",
61 "CONFIG3",
62 "", /* GPIO32 */
63 "", /* GPIO33 */
64 "", /* GPIO34 */
65 "", /* GPIO35 */
66 "", /* GPIO36 */
67 "", /* GPIO37 */
68 "", /* GPIO38 */
69 "", /* GPIO39 */
70 "PWM0_OUT",
71 "", /* GPIO41 */
72 "", /* GPIO42 */
73 "", /* GPIO43 */
74 "", /* GPIO44 */
75 "PWM1_OUT",
76 "HDMI_HPD_P",
77 "SD_CARD_DET",
78 /* Used by SD Card */
79 "SD_CLK_R",
80 "SD_CMD_R",
81 "SD_DATA0_R",
82 "SD_DATA1_R",
83 "SD_DATA2_R",
84 "SD_DATA3_R";
85
86 pinctrl-names = "default";
87 pinctrl-0 = <&gpioout &alt0 &i2s_alt2>;
88
89 /* I2S interface */
90 i2s_alt2: i2s_alt2 {
91 brcm,pins = <28 29 30 31>;
92 brcm,function = <BCM2835_FSEL_ALT2>;
93 };
94 };
95
96 &hdmi {
97 hpd-gpios = <&gpio 46 GPIO_ACTIVE_HIGH>;
98 power-domains = <&power RPI_POWER_DOMAIN_HDMI>;
99 status = "okay";
100 };
101
102 &led_act {
103 gpios = <&gpio 16 GPIO_ACTIVE_LOW>;
104 };
105
106 &pwm {
107 pinctrl-names = "default";
108 pinctrl-0 = <&pwm0_gpio40 &pwm1_gpio45>;
109 status = "okay";
110 };
111
112 &sdhost {
113 pinctrl-names = "default";
114 pinctrl-0 = <&sdhost_gpio48>;
115 bus-width = <4>;
116 status = "okay";
117 };
118
119 &uart0 {
120 pinctrl-names = "default";
121 pinctrl-0 = <&uart0_gpio14>;
122 status = "okay";
123 };
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