tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1// SPDX-License-Identifier: GPL-2.0
2/dts-v1/;
3#include "bcm2711.dtsi"
4#include "bcm2835-rpi.dtsi"
5#include "bcm283x-rpi-usb-peripheral.dtsi"
6
7/ {
8 compatible = "raspberrypi,4-model-b", "brcm,bcm2711";
9 model = "Raspberry Pi 4 Model B";
10
11 chosen {
12 /* 8250 auxiliary UART instead of pl011 */
13 stdout-path = "serial1:115200n8";
14 };
15
16 /* Will be filled by the bootloader */
17 memory@0 {
18 device_type = "memory";
19 reg = <0 0 0>;
20 };
21
22 aliases {
23 emmc2bus = &emmc2bus;
24 ethernet0 = &genet;
25 pcie0 = &pcie0;
26 };
27
28 leds {
29 act {
30 gpios = <&gpio 42 GPIO_ACTIVE_HIGH>;
31 };
32
33 pwr {
34 label = "PWR";
35 gpios = <&expgpio 2 GPIO_ACTIVE_LOW>;
36 default-state = "keep";
37 linux,default-trigger = "default-on";
38 };
39 };
40
41 wifi_pwrseq: wifi-pwrseq {
42 compatible = "mmc-pwrseq-simple";
43 reset-gpios = <&expgpio 1 GPIO_ACTIVE_LOW>;
44 };
45
46 sd_io_1v8_reg: sd_io_1v8_reg {
47 compatible = "regulator-gpio";
48 regulator-name = "vdd-sd-io";
49 regulator-min-microvolt = <1800000>;
50 regulator-max-microvolt = <3300000>;
51 regulator-boot-on;
52 regulator-always-on;
53 regulator-settling-time-us = <5000>;
54 gpios = <&expgpio 4 GPIO_ACTIVE_HIGH>;
55 states = <1800000 0x1
56 3300000 0x0>;
57 status = "okay";
58 };
59
60 sd_vcc_reg: sd_vcc_reg {
61 compatible = "regulator-fixed";
62 regulator-name = "vcc-sd";
63 regulator-min-microvolt = <3300000>;
64 regulator-max-microvolt = <3300000>;
65 regulator-boot-on;
66 enable-active-high;
67 gpio = <&expgpio 6 GPIO_ACTIVE_HIGH>;
68 };
69};
70
71&firmware {
72 expgpio: gpio {
73 compatible = "raspberrypi,firmware-gpio";
74 gpio-controller;
75 #gpio-cells = <2>;
76 gpio-line-names = "BT_ON",
77 "WL_ON",
78 "PWR_LED_OFF",
79 "GLOBAL_RESET",
80 "VDD_SD_IO_SEL",
81 "CAM_GPIO",
82 "SD_PWR_ON",
83 "";
84 status = "okay";
85 };
86};
87
88&gpio {
89 /*
90 * Parts taken from rpi_SCH_4b_4p0_reduced.pdf and
91 * the official GPU firmware DT blob.
92 *
93 * Legend:
94 * "FOO" = GPIO line named "FOO" on the schematic
95 * "FOO_N" = GPIO line named "FOO" on schematic, active low
96 */
97 gpio-line-names = "ID_SDA",
98 "ID_SCL",
99 "SDA1",
100 "SCL1",
101 "GPIO_GCLK",
102 "GPIO5",
103 "GPIO6",
104 "SPI_CE1_N",
105 "SPI_CE0_N",
106 "SPI_MISO",
107 "SPI_MOSI",
108 "SPI_SCLK",
109 "GPIO12",
110 "GPIO13",
111 /* Serial port */
112 "TXD1",
113 "RXD1",
114 "GPIO16",
115 "GPIO17",
116 "GPIO18",
117 "GPIO19",
118 "GPIO20",
119 "GPIO21",
120 "GPIO22",
121 "GPIO23",
122 "GPIO24",
123 "GPIO25",
124 "GPIO26",
125 "GPIO27",
126 "RGMII_MDIO",
127 "RGMIO_MDC",
128 /* Used by BT module */
129 "CTS0",
130 "RTS0",
131 "TXD0",
132 "RXD0",
133 /* Used by Wifi */
134 "SD1_CLK",
135 "SD1_CMD",
136 "SD1_DATA0",
137 "SD1_DATA1",
138 "SD1_DATA2",
139 "SD1_DATA3",
140 /* Shared with SPI flash */
141 "PWM0_MISO",
142 "PWM1_MOSI",
143 "STATUS_LED_G_CLK",
144 "SPIFLASH_CE_N",
145 "SDA0",
146 "SCL0",
147 "RGMII_RXCLK",
148 "RGMII_RXCTL",
149 "RGMII_RXD0",
150 "RGMII_RXD1",
151 "RGMII_RXD2",
152 "RGMII_RXD3",
153 "RGMII_TXCLK",
154 "RGMII_TXCTL",
155 "RGMII_TXD0",
156 "RGMII_TXD1",
157 "RGMII_TXD2",
158 "RGMII_TXD3";
159};
160
161&pwm1 {
162 pinctrl-names = "default";
163 pinctrl-0 = <&pwm1_0_gpio40 &pwm1_1_gpio41>;
164 status = "okay";
165};
166
167/* SDHCI is used to control the SDIO for wireless */
168&sdhci {
169 #address-cells = <1>;
170 #size-cells = <0>;
171 pinctrl-names = "default";
172 pinctrl-0 = <&emmc_gpio34>;
173 bus-width = <4>;
174 non-removable;
175 mmc-pwrseq = <&wifi_pwrseq>;
176 status = "okay";
177
178 brcmf: wifi@1 {
179 reg = <1>;
180 compatible = "brcm,bcm4329-fmac";
181 };
182};
183
184/* EMMC2 is used to drive the SD card */
185&emmc2 {
186 vqmmc-supply = <&sd_io_1v8_reg>;
187 vmmc-supply = <&sd_vcc_reg>;
188 broken-cd;
189 status = "okay";
190};
191
192&genet {
193 phy-handle = <&phy1>;
194 phy-mode = "rgmii-rxid";
195 status = "okay";
196};
197
198&genet_mdio {
199 phy1: ethernet-phy@1 {
200 /* No PHY interrupt */
201 reg = <0x1>;
202 };
203};
204
205/* uart0 communicates with the BT module */
206&uart0 {
207 pinctrl-names = "default";
208 pinctrl-0 = <&uart0_ctsrts_gpio30 &uart0_gpio32>;
209 uart-has-rtscts;
210 status = "okay";
211
212 bluetooth {
213 compatible = "brcm,bcm43438-bt";
214 max-speed = <2000000>;
215 shutdown-gpios = <&expgpio 0 GPIO_ACTIVE_HIGH>;
216 };
217};
218
219/* uart1 is mapped to the pin header */
220&uart1 {
221 pinctrl-names = "default";
222 pinctrl-0 = <&uart1_gpio14>;
223 status = "okay";
224};
225
226&vchiq {
227 interrupts = <GIC_SPI 34 IRQ_TYPE_LEVEL_HIGH>;
228};