1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
2 // Copyright (C) 2021-2022 Samuel Holland <samuel@sholland.org>
3
4 /*
5 * gpio line names
6 *
7 * The Nezha-D1 has a 40-pin IO header. Some of these pins are routed
8 * directly to pads on the SoC, others come from an 8-bit pcf857x IO
9 * expander. Therefore, these line names are specified in two places:
10 * one set for the pcf857x, and one set for the pio controller.
11 *
12 * Lines which are routed to the 40-pin header are named as follows:
13 * <pin#> [<pin name>]
14 * where:
15 * <pin#> is the actual pin number of the 40-pin header
16 * <pin name> is the name of the pin by function/gpio#
17 *
18 * For details regarding pin numbers and names see the schematics (under
19 * "IO EXPAND"):
20 * http://dl.linux-sunxi.org/D1/D1_Nezha_development_board_schematic_diagram_20210224.pdf
21 */
22
23 #include <dt-bindings/gpio/gpio.h>
24 #include <dt-bindings/input/input.h>
25
26 /dts-v1/;
27
28 #include "sun20i-d1.dtsi"
29 #include "sun20i-common-regulators.dtsi"
30
31 / {
32 model = "Allwinner D1 Nezha";
33 compatible = "allwinner,d1-nezha", "allwinner,sun20i-d1";
34
35 aliases {
36 ethernet0 = &emac;
37 ethernet1 = &xr829;
38 serial0 = &uart0;
39 };
40
41 chosen {
42 stdout-path = "serial0:115200n8";
43 };
44
45 reg_usbvbus: usbvbus {
46 compatible = "regulator-fixed";
47 regulator-name = "usbvbus";
48 regulator-min-microvolt = <5000000>;
49 regulator-max-microvolt = <5000000>;
50 gpio = <&pio 3 19 GPIO_ACTIVE_HIGH>; /* PD19 */
51 enable-active-high;
52 vin-supply = <®_vcc>;
53 };
54
55 /*
56 * This regulator is PWM-controlled, but the PWM controller is not
57 * yet supported, so fix the regulator to its default voltage.
58 */
59 reg_vdd_cpu: vdd-cpu {
60 compatible = "regulator-fixed";
61 regulator-name = "vdd-cpu";
62 regulator-min-microvolt = <1100000>;
63 regulator-max-microvolt = <1100000>;
64 vin-supply = <®_vcc>;
65 };
66
67 wifi_pwrseq: wifi-pwrseq {
68 compatible = "mmc-pwrseq-simple";
69 reset-gpios = <&pio 6 12 GPIO_ACTIVE_LOW>; /* PG12 */
70 };
71 };
72
73 &cpu0 {
74 cpu-supply = <®_vdd_cpu>;
75 };
76
77 &dcxo {
78 clock-frequency = <24000000>;
79 };
80
81 &ehci0 {
82 status = "okay";
83 };
84
85 &ehci1 {
86 status = "okay";
87 };
88
89 &emac {
90 pinctrl-0 = <&rgmii_pe_pins>;
91 pinctrl-names = "default";
92 phy-handle = <&ext_rgmii_phy>;
93 phy-mode = "rgmii-id";
94 phy-supply = <®_vcc_3v3>;
95 status = "okay";
96 };
97
98 &i2c2 {
99 pinctrl-0 = <&i2c2_pb0_pins>;
100 pinctrl-names = "default";
101 status = "okay";
102
103 pcf8574a: gpio@38 {
104 compatible = "nxp,pcf8574a";
105 reg = <0x38>;
106 interrupt-parent = <&pio>;
107 interrupts = <1 2 IRQ_TYPE_LEVEL_LOW>; /* PB2 */
108 interrupt-controller;
109 gpio-controller;
110 #gpio-cells = <2>;
111 #interrupt-cells = <2>;
112 gpio-line-names =
113 "pin13 [gpio8]",
114 "pin16 [gpio10]",
115 "pin18 [gpio11]",
116 "pin26 [gpio17]",
117 "pin22 [gpio14]",
118 "pin28 [gpio19]",
119 "pin37 [gpio23]",
120 "pin11 [gpio6]";
121 };
122 };
123
124 &mdio {
125 ext_rgmii_phy: ethernet-phy@1 {
126 compatible = "ethernet-phy-ieee802.3-c22";
127 reg = <1>;
128 };
129 };
130
131 &mmc0 {
132 bus-width = <4>;
133 cd-gpios = <&pio 5 6 GPIO_ACTIVE_HIGH>; /* PF6 */
134 disable-wp;
135 vmmc-supply = <®_vcc_3v3>;
136 vqmmc-supply = <®_vcc_3v3>;
137 pinctrl-0 = <&mmc0_pins>;
138 pinctrl-names = "default";
139 status = "okay";
140 };
141
142 &mmc1 {
143 bus-width = <4>;
144 mmc-pwrseq = <&wifi_pwrseq>;
145 non-removable;
146 vmmc-supply = <®_vcc_3v3>;
147 vqmmc-supply = <®_vcc_3v3>;
148 pinctrl-0 = <&mmc1_pins>;
149 pinctrl-names = "default";
150 status = "okay";
151
152 xr829: wifi@1 {
153 reg = <1>;
154 interrupt-parent = <&pio>;
155 interrupts = <6 10 IRQ_TYPE_LEVEL_LOW>; /* PG10 */
156 interrupt-names = "host-wake";
157 };
158 };
159
160 &ohci0 {
161 status = "okay";
162 };
163
164 &ohci1 {
165 status = "okay";
166 };
167
168 &uart0 {
169 pinctrl-0 = <&uart0_pb8_pins>;
170 pinctrl-names = "default";
171 status = "okay";
172 };
173
174 &uart1 {
175 uart-has-rtscts;
176 pinctrl-0 = <&uart1_pg6_pins>, <&uart1_pg8_rts_cts_pins>;
177 pinctrl-names = "default";
178 status = "okay";
179
180 /* XR829 bluetooth is connected here */
181 };
182
183 &usb_otg {
184 dr_mode = "otg";
185 status = "okay";
186 };
187
188 &usbphy {
189 usb0_id_det-gpios = <&pio 3 21 GPIO_ACTIVE_HIGH>; /* PD21 */
190 usb0_vbus_det-gpios = <&pio 3 20 GPIO_ACTIVE_HIGH>; /* PD20 */
191 usb0_vbus-supply = <®_usbvbus>;
192 usb1_vbus-supply = <®_vcc>;
193 status = "okay";
194 };
195
196 &pio {
197 gpio-line-names =
198 /* Port A */
199 "", "", "", "", "", "", "", "",
200 "", "", "", "", "", "", "", "",
201 "", "", "", "", "", "", "", "",
202 "", "", "", "", "", "", "", "",
203 /* Port B */
204 "pin5 [gpio2/twi2-sck]",
205 "pin3 [gpio1/twi2-sda]",
206 "",
207 "pin38 [gpio24/i2s2-din]",
208 "pin40 [gpio25/i2s2-dout]",
209 "pin12 [gpio7/i2s-clk]",
210 "pin35 [gpio22/i2s2-lrck]",
211 "",
212 "pin8 [gpio4/uart0-txd]",
213 "pin10 [gpio5/uart0-rxd]",
214 "",
215 "",
216 "pin15 [gpio9]",
217 "", "", "", "",
218 "", "", "", "", "", "", "", "",
219 "", "", "", "", "", "", "", "",
220 /* Port C */
221 "",
222 "pin31 [gpio21]",
223 "", "", "", "", "", "",
224 "", "", "", "", "", "", "", "",
225 "", "", "", "", "", "", "", "",
226 "", "", "", "", "", "", "", "",
227 /* Port D */
228 "", "", "", "", "", "", "", "",
229 "", "",
230 "pin24 [gpio16/spi1-ce0]",
231 "pin23 [gpio15/spi1-clk]",
232 "pin19 [gpio12/spi1-mosi]",
233 "pin21 [gpio13/spi1-miso]",
234 "pin27 [gpio18/spi1-hold]",
235 "pin29 [gpio20/spi1-wp]",
236 "", "", "", "", "", "",
237 "pin7 [gpio3/pwm]";
238 };
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